3 * Copyright (c) 2003 Thomas Raivio
4 * Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>
5 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
7 * This file is part of Libav.
9 * Libav is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * Libav is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with Libav; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "avio_internal.h"
31 #include "libavcodec/get_bits.h"
32 #include "libavcodec/put_bits.h"
33 #include "libavcodec/vc1.h"
35 #include "libavutil/avstring.h"
36 #include "libavutil/intfloat.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/opt.h"
39 #include "libavutil/dict.h"
46 static const AVOption options[] = {
47 { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
48 { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
49 { "empty_moov", "Make the initial moov atom empty (not supported by QuickTime)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
50 { "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
51 { "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
52 { "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
53 { "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
54 { "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
55 { "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
56 FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
57 { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
58 { "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
59 { "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
60 { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
61 { "min_frag_duration", "Minimum fragment duration", offsetof(MOVMuxContext, min_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
62 { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
63 { "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
67 #define MOV_CLASS(flavor)\
68 static const AVClass flavor ## _muxer_class = {\
69 .class_name = #flavor " muxer",\
70 .item_name = av_default_item_name,\
72 .version = LIBAVUTIL_VERSION_INT,\
75 //FIXME support 64 bit variant with wide placeholders
76 static int64_t update_size(AVIOContext *pb, int64_t pos)
78 int64_t curpos = avio_tell(pb);
79 avio_seek(pb, pos, SEEK_SET);
80 avio_wb32(pb, curpos - pos); /* rewrite size */
81 avio_seek(pb, curpos, SEEK_SET);
86 static int co64_required(const MOVTrack *track)
88 if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
93 /* Chunk offset atom */
94 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
97 int mode64 = co64_required(track); // use 32 bit size variant if possible
98 int64_t pos = avio_tell(pb);
99 avio_wb32(pb, 0); /* size */
101 ffio_wfourcc(pb, "co64");
103 ffio_wfourcc(pb, "stco");
104 avio_wb32(pb, 0); /* version & flags */
105 avio_wb32(pb, track->entry); /* entry count */
106 for (i = 0; i < track->entry; i++) {
108 avio_wb64(pb, track->cluster[i].pos + track->data_offset);
110 avio_wb32(pb, track->cluster[i].pos + track->data_offset);
112 return update_size(pb, pos);
115 /* Sample size atom */
116 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
119 int i, j, entries = 0, tst = -1, oldtst = -1;
121 int64_t pos = avio_tell(pb);
122 avio_wb32(pb, 0); /* size */
123 ffio_wfourcc(pb, "stsz");
124 avio_wb32(pb, 0); /* version & flags */
126 for (i = 0; i < track->entry; i++) {
127 tst = track->cluster[i].size / track->cluster[i].entries;
128 if (oldtst != -1 && tst != oldtst)
131 entries += track->cluster[i].entries;
133 if (equalChunks && track->entry) {
134 int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
135 sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
136 avio_wb32(pb, sSize); // sample size
137 avio_wb32(pb, entries); // sample count
139 avio_wb32(pb, 0); // sample size
140 avio_wb32(pb, entries); // sample count
141 for (i = 0; i < track->entry; i++) {
142 for (j = 0; j < track->cluster[i].entries; j++) {
143 avio_wb32(pb, track->cluster[i].size /
144 track->cluster[i].entries);
148 return update_size(pb, pos);
151 /* Sample to chunk atom */
152 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
154 int index = 0, oldval = -1, i;
155 int64_t entryPos, curpos;
157 int64_t pos = avio_tell(pb);
158 avio_wb32(pb, 0); /* size */
159 ffio_wfourcc(pb, "stsc");
160 avio_wb32(pb, 0); // version & flags
161 entryPos = avio_tell(pb);
162 avio_wb32(pb, track->entry); // entry count
163 for (i = 0; i < track->entry; i++) {
164 if (oldval != track->cluster[i].samples_in_chunk) {
165 avio_wb32(pb, i + 1); // first chunk
166 avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
167 avio_wb32(pb, 0x1); // sample description index
168 oldval = track->cluster[i].samples_in_chunk;
172 curpos = avio_tell(pb);
173 avio_seek(pb, entryPos, SEEK_SET);
174 avio_wb32(pb, index); // rewrite size
175 avio_seek(pb, curpos, SEEK_SET);
177 return update_size(pb, pos);
180 /* Sync sample atom */
181 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
183 int64_t curpos, entryPos;
185 int64_t pos = avio_tell(pb);
186 avio_wb32(pb, 0); // size
187 ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
188 avio_wb32(pb, 0); // version & flags
189 entryPos = avio_tell(pb);
190 avio_wb32(pb, track->entry); // entry count
191 for (i = 0; i < track->entry; i++) {
192 if (track->cluster[i].flags & flag) {
193 avio_wb32(pb, i + 1);
197 curpos = avio_tell(pb);
198 avio_seek(pb, entryPos, SEEK_SET);
199 avio_wb32(pb, index); // rewrite size
200 avio_seek(pb, curpos, SEEK_SET);
201 return update_size(pb, pos);
204 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
206 avio_wb32(pb, 0x11); /* size */
207 if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
208 else ffio_wfourcc(pb, "damr");
209 ffio_wfourcc(pb, "FFMP");
210 avio_w8(pb, 0); /* decoder version */
212 avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
213 avio_w8(pb, 0x00); /* Mode change period (no restriction) */
214 avio_w8(pb, 0x01); /* Frames per sample */
218 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
223 int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
225 if (track->vos_len < 7)
229 ffio_wfourcc(pb, "dac3");
231 init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
232 fscod = get_bits(&gbc, 2);
233 frmsizecod = get_bits(&gbc, 6);
234 bsid = get_bits(&gbc, 5);
235 bsmod = get_bits(&gbc, 3);
236 acmod = get_bits(&gbc, 3);
238 skip_bits(&gbc, 2); // dsurmod
240 if ((acmod & 1) && acmod != 1)
241 skip_bits(&gbc, 2); // cmixlev
243 skip_bits(&gbc, 2); // surmixlev
245 lfeon = get_bits1(&gbc);
247 init_put_bits(&pbc, buf, sizeof(buf));
248 put_bits(&pbc, 2, fscod);
249 put_bits(&pbc, 5, bsid);
250 put_bits(&pbc, 3, bsmod);
251 put_bits(&pbc, 3, acmod);
252 put_bits(&pbc, 1, lfeon);
253 put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
254 put_bits(&pbc, 5, 0); // reserved
256 flush_put_bits(&pbc);
257 avio_write(pb, buf, sizeof(buf));
263 * This function writes extradata "as is".
264 * Extradata must be formatted like a valid atom (with size and tag).
266 static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
268 avio_write(pb, track->enc->extradata, track->enc->extradata_size);
269 return track->enc->extradata_size;
272 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
277 avio_w8(pb, (size >> (7 * i)) | 0x80);
278 avio_w8(pb, size & 0x7F);
281 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
283 int64_t pos = avio_tell(pb);
284 int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
286 avio_wb32(pb, 0); // size
287 ffio_wfourcc(pb, "esds");
288 avio_wb32(pb, 0); // Version
291 put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
292 avio_wb16(pb, track->track_id);
293 avio_w8(pb, 0x00); // flags (= no flags)
295 // DecoderConfig descriptor
296 put_descr(pb, 0x04, 13 + decoder_specific_info_len);
298 // Object type indication
299 if ((track->enc->codec_id == AV_CODEC_ID_MP2 ||
300 track->enc->codec_id == AV_CODEC_ID_MP3) &&
301 track->enc->sample_rate > 24000)
302 avio_w8(pb, 0x6B); // 11172-3
304 avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));
306 // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
307 // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
308 if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
309 avio_w8(pb, 0x15); // flags (= Audiostream)
311 avio_w8(pb, 0x11); // flags (= Visualstream)
313 avio_wb24(pb, track->enc->rc_buffer_size >> 3); // Buffersize DB
315 avio_wb32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
316 if (track->enc->rc_max_rate != track->enc->rc_min_rate ||
317 track->enc->rc_min_rate == 0)
318 avio_wb32(pb, 0); // vbr
320 avio_wb32(pb, track->enc->rc_max_rate); // avg bitrate
322 if (track->vos_len) {
323 // DecoderSpecific info descriptor
324 put_descr(pb, 0x05, track->vos_len);
325 avio_write(pb, track->vos_data, track->vos_len);
329 put_descr(pb, 0x06, 1);
331 return update_size(pb, pos);
334 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
336 int64_t pos = avio_tell(pb);
338 avio_wl32(pb, track->tag); // store it byteswapped
339 track->enc->codec_tag = av_bswap16(track->tag >> 16);
340 ff_put_wav_header(pb, track->enc);
341 return update_size(pb, pos);
344 static int mov_write_wfex_tag(AVIOContext *pb, MOVTrack *track)
346 int64_t pos = avio_tell(pb);
348 ffio_wfourcc(pb, "wfex");
349 ff_put_wav_header(pb, track->enc);
350 return update_size(pb, pos);
353 static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
355 uint32_t layout_tag, bitmap;
356 int64_t pos = avio_tell(pb);
358 layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
359 track->enc->channel_layout,
362 av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
363 "lack of channel information\n");
367 avio_wb32(pb, 0); // Size
368 ffio_wfourcc(pb, "chan"); // Type
369 avio_w8(pb, 0); // Version
370 avio_wb24(pb, 0); // Flags
371 avio_wb32(pb, layout_tag); // mChannelLayoutTag
372 avio_wb32(pb, bitmap); // mChannelBitmap
373 avio_wb32(pb, 0); // mNumberChannelDescriptions
375 return update_size(pb, pos);
378 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
380 int64_t pos = avio_tell(pb);
382 avio_wb32(pb, 0); /* size */
383 ffio_wfourcc(pb, "wave");
385 avio_wb32(pb, 12); /* size */
386 ffio_wfourcc(pb, "frma");
387 avio_wl32(pb, track->tag);
389 if (track->enc->codec_id == AV_CODEC_ID_AAC) {
390 /* useless atom needed by mplayer, ipod, not needed by quicktime */
391 avio_wb32(pb, 12); /* size */
392 ffio_wfourcc(pb, "mp4a");
394 mov_write_esds_tag(pb, track);
395 } else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB) {
396 mov_write_amr_tag(pb, track);
397 } else if (track->enc->codec_id == AV_CODEC_ID_AC3) {
398 mov_write_ac3_tag(pb, track);
399 } else if (track->enc->codec_id == AV_CODEC_ID_ALAC) {
400 mov_write_extradata_tag(pb, track);
401 } else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
402 track->enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
403 mov_write_ms_tag(pb, track);
406 avio_wb32(pb, 8); /* size */
407 avio_wb32(pb, 0); /* null tag */
409 return update_size(pb, pos);
412 static int mov_write_dvc1_structs(MOVTrack *track, uint8_t *buf)
415 const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
416 int unescaped_size, seq_found = 0;
417 int level = 0, interlace = 0;
418 int packet_seq = track->vc1_info.packet_seq;
419 int packet_entry = track->vc1_info.packet_entry;
420 int slices = track->vc1_info.slices;
423 if (track->start_dts == AV_NOPTS_VALUE) {
424 /* No packets written yet, vc1_info isn't authoritative yet. */
425 /* Assume inline sequence and entry headers. This will be
426 * overwritten at the end if the file is seekable. */
427 packet_seq = packet_entry = 1;
430 unescaped = av_mallocz(track->vos_len + FF_INPUT_BUFFER_PADDING_SIZE);
432 return AVERROR(ENOMEM);
433 start = find_next_marker(track->vos_data, end);
434 for (next = start; next < end; start = next) {
437 next = find_next_marker(start + 4, end);
438 size = next - start - 4;
441 unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
442 init_get_bits(&gb, unescaped, 8 * unescaped_size);
443 if (AV_RB32(start) == VC1_CODE_SEQHDR) {
444 int profile = get_bits(&gb, 2);
445 if (profile != PROFILE_ADVANCED) {
447 return AVERROR(ENOSYS);
450 level = get_bits(&gb, 3);
451 /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
453 skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
454 skip_bits(&gb, 1); /* broadcast */
455 interlace = get_bits1(&gb);
456 skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
461 return AVERROR(ENOSYS);
464 init_put_bits(&pbc, buf, 7);
465 /* VC1DecSpecStruc */
466 put_bits(&pbc, 4, 12); /* profile - advanced */
467 put_bits(&pbc, 3, level);
468 put_bits(&pbc, 1, 0); /* reserved */
469 /* VC1AdvDecSpecStruc */
470 put_bits(&pbc, 3, level);
471 put_bits(&pbc, 1, 0); /* cbr */
472 put_bits(&pbc, 6, 0); /* reserved */
473 put_bits(&pbc, 1, !interlace); /* no interlace */
474 put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
475 put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
476 put_bits(&pbc, 1, !slices); /* no slice code */
477 put_bits(&pbc, 1, 0); /* no bframe */
478 put_bits(&pbc, 1, 0); /* reserved */
479 put_bits32(&pbc, track->enc->time_base.den); /* framerate */
480 flush_put_bits(&pbc);
487 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
489 uint8_t buf[7] = { 0 };
492 if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
495 avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
496 ffio_wfourcc(pb, "dvc1");
497 track->vc1_info.struct_offset = avio_tell(pb);
498 avio_write(pb, buf, sizeof(buf));
499 avio_write(pb, track->vos_data, track->vos_len);
504 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
506 avio_wb32(pb, track->vos_len + 8);
507 ffio_wfourcc(pb, "glbl");
508 avio_write(pb, track->vos_data, track->vos_len);
509 return 8 + track->vos_len;
513 * Compute flags for 'lpcm' tag.
514 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
516 static int mov_get_lpcm_flags(enum AVCodecID codec_id)
519 case AV_CODEC_ID_PCM_F32BE:
520 case AV_CODEC_ID_PCM_F64BE:
522 case AV_CODEC_ID_PCM_F32LE:
523 case AV_CODEC_ID_PCM_F64LE:
525 case AV_CODEC_ID_PCM_U8:
527 case AV_CODEC_ID_PCM_S16BE:
528 case AV_CODEC_ID_PCM_S24BE:
529 case AV_CODEC_ID_PCM_S32BE:
531 case AV_CODEC_ID_PCM_S8:
532 case AV_CODEC_ID_PCM_S16LE:
533 case AV_CODEC_ID_PCM_S24LE:
534 case AV_CODEC_ID_PCM_S32LE:
541 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
545 if (cluster_idx >= track->entry)
548 if (cluster_idx + 1 == track->entry)
549 next_dts = track->track_duration + track->start_dts;
551 next_dts = track->cluster[cluster_idx + 1].dts;
553 return next_dts - track->cluster[cluster_idx].dts;
556 static int get_samples_per_packet(MOVTrack *track)
558 int i, first_duration;
560 /* use 1 for raw PCM */
561 if (!track->audio_vbr)
564 /* check to see if duration is constant for all clusters */
567 first_duration = get_cluster_duration(track, 0);
568 for (i = 1; i < track->entry; i++) {
569 if (get_cluster_duration(track, i) != first_duration)
572 return first_duration;
575 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
577 int64_t pos = avio_tell(pb);
579 uint32_t tag = track->tag;
581 if (track->mode == MODE_MOV) {
582 if (mov_get_lpcm_flags(track->enc->codec_id))
583 tag = AV_RL32("lpcm");
587 avio_wb32(pb, 0); /* size */
588 avio_wl32(pb, tag); // store it byteswapped
589 avio_wb32(pb, 0); /* Reserved */
590 avio_wb16(pb, 0); /* Reserved */
591 avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
593 /* SoundDescription */
594 avio_wb16(pb, version); /* Version */
595 avio_wb16(pb, 0); /* Revision level */
596 avio_wb32(pb, 0); /* Reserved */
601 avio_wb16(pb, 0xfffe);
603 avio_wb32(pb, 0x00010000);
605 avio_wb64(pb, av_double2int(track->enc->sample_rate));
606 avio_wb32(pb, track->enc->channels);
607 avio_wb32(pb, 0x7F000000);
608 avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
609 avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
610 avio_wb32(pb, track->sample_size);
611 avio_wb32(pb, get_samples_per_packet(track));
613 /* reserved for mp4/3gp */
618 avio_wb16(pb, 0); /* packet size (= 0) */
619 avio_wb16(pb, track->enc->sample_rate <= UINT16_MAX ?
620 track->enc->sample_rate : 0);
621 avio_wb16(pb, 0); /* Reserved */
624 if (track->mode == MODE_MOV &&
625 (track->enc->codec_id == AV_CODEC_ID_AAC ||
626 track->enc->codec_id == AV_CODEC_ID_AC3 ||
627 track->enc->codec_id == AV_CODEC_ID_AMR_NB ||
628 track->enc->codec_id == AV_CODEC_ID_ALAC ||
629 track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
630 track->enc->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV))
631 mov_write_wave_tag(pb, track);
632 else if (track->tag == MKTAG('m','p','4','a'))
633 mov_write_esds_tag(pb, track);
634 else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB)
635 mov_write_amr_tag(pb, track);
636 else if (track->enc->codec_id == AV_CODEC_ID_AC3)
637 mov_write_ac3_tag(pb, track);
638 else if (track->enc->codec_id == AV_CODEC_ID_ALAC)
639 mov_write_extradata_tag(pb, track);
640 else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO)
641 mov_write_wfex_tag(pb, track);
642 else if (track->vos_len > 0)
643 mov_write_glbl_tag(pb, track);
645 if (track->mode == MODE_MOV && track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
646 mov_write_chan_tag(pb, track);
648 return update_size(pb, pos);
651 static int mov_write_d263_tag(AVIOContext *pb)
653 avio_wb32(pb, 0xf); /* size */
654 ffio_wfourcc(pb, "d263");
655 ffio_wfourcc(pb, "FFMP");
656 avio_w8(pb, 0); /* decoder version */
657 /* FIXME use AVCodecContext level/profile, when encoder will set values */
658 avio_w8(pb, 0xa); /* level */
659 avio_w8(pb, 0); /* profile */
663 /* TODO: No idea about these values */
664 static int mov_write_svq3_tag(AVIOContext *pb)
667 ffio_wfourcc(pb, "SMI ");
668 ffio_wfourcc(pb, "SEQH");
670 avio_wb32(pb, 0xe2c0211d);
671 avio_wb32(pb, 0xc0000000);
676 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
678 int64_t pos = avio_tell(pb);
681 ffio_wfourcc(pb, "avcC");
682 ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
683 return update_size(pb, pos);
686 /* also used by all avid codecs (dv, imx, meridien) and their variants */
687 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
690 avio_wb32(pb, 24); /* size */
691 ffio_wfourcc(pb, "ACLR");
692 ffio_wfourcc(pb, "ACLR");
693 ffio_wfourcc(pb, "0001");
694 avio_wb32(pb, 2); /* yuv range: full 1 / normal 2 */
695 avio_wb32(pb, 0); /* unknown */
697 avio_wb32(pb, 24); /* size */
698 ffio_wfourcc(pb, "APRG");
699 ffio_wfourcc(pb, "APRG");
700 ffio_wfourcc(pb, "0001");
701 avio_wb32(pb, 1); /* unknown */
702 avio_wb32(pb, 0); /* unknown */
704 avio_wb32(pb, 120); /* size */
705 ffio_wfourcc(pb, "ARES");
706 ffio_wfourcc(pb, "ARES");
707 ffio_wfourcc(pb, "0001");
708 avio_wb32(pb, AV_RB32(track->vos_data + 0x28)); /* dnxhd cid, some id ? */
709 avio_wb32(pb, track->enc->width);
710 /* values below are based on samples created with quicktime and avid codecs */
711 if (track->vos_data[5] & 2) { // interlaced
712 avio_wb32(pb, track->enc->height / 2);
713 avio_wb32(pb, 2); /* unknown */
714 avio_wb32(pb, 0); /* unknown */
715 avio_wb32(pb, 4); /* unknown */
717 avio_wb32(pb, track->enc->height);
718 avio_wb32(pb, 1); /* unknown */
719 avio_wb32(pb, 0); /* unknown */
720 if (track->enc->height == 1080)
721 avio_wb32(pb, 5); /* unknown */
723 avio_wb32(pb, 6); /* unknown */
726 for (i = 0; i < 10; i++)
729 /* extra padding for stsd needed */
734 static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
736 int tag = track->enc->codec_tag;
738 if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
741 if (track->enc->codec_id == AV_CODEC_ID_H264) tag = MKTAG('a','v','c','1');
742 else if (track->enc->codec_id == AV_CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
743 else if (track->enc->codec_id == AV_CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
744 else if (track->enc->codec_id == AV_CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
745 else if (track->enc->codec_id == AV_CODEC_ID_VC1) tag = MKTAG('v','c','-','1');
746 else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
747 else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
752 static const AVCodecTag codec_ipod_tags[] = {
753 { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
754 { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
755 { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
756 { AV_CODEC_ID_ALAC, MKTAG('a','l','a','c') },
757 { AV_CODEC_ID_AC3, MKTAG('a','c','-','3') },
758 { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
759 { AV_CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
760 { AV_CODEC_ID_NONE, 0 },
763 static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
765 int tag = track->enc->codec_tag;
767 // keep original tag for subs, ipod supports both formats
768 if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
769 (tag == MKTAG('t', 'x', '3', 'g') ||
770 tag == MKTAG('t', 'e', 'x', 't'))))
771 tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
773 if (!av_match_ext(s->filename, "m4a") && !av_match_ext(s->filename, "m4v"))
774 av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
775 "Quicktime/Ipod might not play the file\n");
780 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
784 if (track->enc->width == 720) /* SD */
785 if (track->enc->height == 480) /* NTSC */
786 if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
787 else tag = MKTAG('d','v','c',' ');
788 else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
789 else if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
790 else tag = MKTAG('d','v','p','p');
791 else if (track->enc->height == 720) /* HD 720 line */
792 if (track->enc->time_base.den == 50) tag = MKTAG('d','v','h','q');
793 else tag = MKTAG('d','v','h','p');
794 else if (track->enc->height == 1080) /* HD 1080 line */
795 if (track->enc->time_base.den == 25) tag = MKTAG('d','v','h','5');
796 else tag = MKTAG('d','v','h','6');
798 av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
805 static const struct {
806 enum AVPixelFormat pix_fmt;
809 } mov_pix_fmt_tags[] = {
810 { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
811 { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
812 { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
813 { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
814 { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
815 { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
816 { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
817 { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
818 { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
819 { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
820 { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
821 { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
822 { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
823 { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
826 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
828 int tag = track->enc->codec_tag;
831 for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
832 if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
833 tag = mov_pix_fmt_tags[i].tag;
834 track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
842 static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
844 int tag = track->enc->codec_tag;
846 if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
847 (track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
848 track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
849 track->enc->codec_id == AV_CODEC_ID_H263 ||
850 av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
851 if (track->enc->codec_id == AV_CODEC_ID_DVVIDEO)
852 tag = mov_get_dv_codec_tag(s, track);
853 else if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO)
854 tag = mov_get_rawvideo_codec_tag(s, track);
855 else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
856 tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->enc->codec_id);
857 if (!tag) { // if no mac fcc found, try with Microsoft tags
858 tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);
860 av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
861 "the file may be unplayable!\n");
863 } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
864 tag = ff_codec_get_tag(ff_codec_movaudio_tags, track->enc->codec_id);
865 if (!tag) { // if no mac fcc found, try with Microsoft tags
866 int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
868 tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
869 av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
870 "the file may be unplayable!\n");
873 } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
874 tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);
880 static const AVCodecTag codec_3gp_tags[] = {
881 { AV_CODEC_ID_H263, MKTAG('s','2','6','3') },
882 { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
883 { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
884 { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
885 { AV_CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
886 { AV_CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
887 { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
888 { AV_CODEC_ID_NONE, 0 },
891 static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
895 if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
896 tag = mp4_get_codec_tag(s, track);
897 else if (track->mode == MODE_ISM) {
898 tag = mp4_get_codec_tag(s, track);
899 if (!tag && track->enc->codec_id == AV_CODEC_ID_WMAPRO)
900 tag = MKTAG('w', 'm', 'a', ' ');
901 } else if (track->mode == MODE_IPOD)
902 tag = ipod_get_codec_tag(s, track);
903 else if (track->mode & MODE_3GP)
904 tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
906 tag = mov_get_codec_tag(s, track);
912 * Needed to make file play in iPods running newest firmware
913 * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
915 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
918 ffio_wfourcc(pb, "uuid");
919 avio_wb32(pb, 0x6b6840f2);
920 avio_wb32(pb, 0x5f244fc5);
921 avio_wb32(pb, 0xba39a51b);
922 avio_wb32(pb, 0xcf0323f3);
927 static const uint16_t fiel_data[] = {
928 0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
931 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
933 unsigned mov_field_order = 0;
934 if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
935 mov_field_order = fiel_data[track->enc->field_order];
939 ffio_wfourcc(pb, "fiel");
940 avio_wb16(pb, mov_field_order);
944 static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)
946 int64_t pos = avio_tell(pb);
947 avio_wb32(pb, 0); /* size */
948 avio_wl32(pb, track->tag); // store it byteswapped
949 avio_wb32(pb, 0); /* Reserved */
950 avio_wb16(pb, 0); /* Reserved */
951 avio_wb16(pb, 1); /* Data-reference index */
953 if (track->enc->extradata_size)
954 avio_write(pb, track->enc->extradata, track->enc->extradata_size);
956 return update_size(pb, pos);
959 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
962 av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
963 track->enc->sample_aspect_ratio.den, INT_MAX);
966 ffio_wfourcc(pb, "pasp");
967 avio_wb32(pb, sar.num);
968 avio_wb32(pb, sar.den);
972 static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
974 int64_t pos = avio_tell(pb);
975 char compressor_name[32] = { 0 };
977 avio_wb32(pb, 0); /* size */
978 avio_wl32(pb, track->tag); // store it byteswapped
979 avio_wb32(pb, 0); /* Reserved */
980 avio_wb16(pb, 0); /* Reserved */
981 avio_wb16(pb, 1); /* Data-reference index */
983 avio_wb16(pb, 0); /* Codec stream version */
984 avio_wb16(pb, 0); /* Codec stream revision (=0) */
985 if (track->mode == MODE_MOV) {
986 ffio_wfourcc(pb, "FFMP"); /* Vendor */
987 if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO) {
988 avio_wb32(pb, 0); /* Temporal Quality */
989 avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
991 avio_wb32(pb, 0x200); /* Temporal Quality = normal */
992 avio_wb32(pb, 0x200); /* Spatial Quality = normal */
995 avio_wb32(pb, 0); /* Reserved */
996 avio_wb32(pb, 0); /* Reserved */
997 avio_wb32(pb, 0); /* Reserved */
999 avio_wb16(pb, track->enc->width); /* Video width */
1000 avio_wb16(pb, track->height); /* Video height */
1001 avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
1002 avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
1003 avio_wb32(pb, 0); /* Data size (= 0) */
1004 avio_wb16(pb, 1); /* Frame count (= 1) */
1006 /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
1007 if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)
1008 av_strlcpy(compressor_name, track->enc->codec->name, 32);
1009 avio_w8(pb, strlen(compressor_name));
1010 avio_write(pb, compressor_name, 31);
1012 if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
1013 avio_wb16(pb, track->enc->bits_per_coded_sample);
1015 avio_wb16(pb, 0x18); /* Reserved */
1016 avio_wb16(pb, 0xffff); /* Reserved */
1017 if (track->tag == MKTAG('m','p','4','v'))
1018 mov_write_esds_tag(pb, track);
1019 else if (track->enc->codec_id == AV_CODEC_ID_H263)
1020 mov_write_d263_tag(pb);
1021 else if (track->enc->codec_id == AV_CODEC_ID_SVQ3)
1022 mov_write_svq3_tag(pb);
1023 else if (track->enc->codec_id == AV_CODEC_ID_DNXHD)
1024 mov_write_avid_tag(pb, track);
1025 else if (track->enc->codec_id == AV_CODEC_ID_H264) {
1026 mov_write_avcc_tag(pb, track);
1027 if (track->mode == MODE_IPOD)
1028 mov_write_uuid_tag_ipod(pb);
1029 } else if (track->enc->field_order != AV_FIELD_UNKNOWN)
1030 mov_write_fiel_tag(pb, track);
1031 else if (track->enc->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
1032 mov_write_dvc1_tag(pb, track);
1033 else if (track->vos_len > 0)
1034 mov_write_glbl_tag(pb, track);
1036 if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
1037 track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
1038 mov_write_pasp_tag(pb, track);
1041 return update_size(pb, pos);
1044 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
1046 int64_t pos = avio_tell(pb);
1047 avio_wb32(pb, 0); /* size */
1048 ffio_wfourcc(pb, "rtp ");
1049 avio_wb32(pb, 0); /* Reserved */
1050 avio_wb16(pb, 0); /* Reserved */
1051 avio_wb16(pb, 1); /* Data-reference index */
1053 avio_wb16(pb, 1); /* Hint track version */
1054 avio_wb16(pb, 1); /* Highest compatible version */
1055 avio_wb32(pb, track->max_packet_size); /* Max packet size */
1057 avio_wb32(pb, 12); /* size */
1058 ffio_wfourcc(pb, "tims");
1059 avio_wb32(pb, track->timescale);
1061 return update_size(pb, pos);
1064 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
1066 int64_t pos = avio_tell(pb);
1068 avio_wb32(pb, 0); /* size */
1069 ffio_wfourcc(pb, "tmcd"); /* Data format */
1070 avio_wb32(pb, 0); /* Reserved */
1071 avio_wb32(pb, 1); /* Data reference index */
1072 if (track->enc->extradata_size)
1073 avio_write(pb, track->enc->extradata, track->enc->extradata_size);
1074 return update_size(pb, pos);
1077 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
1079 int64_t pos = avio_tell(pb);
1080 avio_wb32(pb, 0); /* size */
1081 ffio_wfourcc(pb, "stsd");
1082 avio_wb32(pb, 0); /* version & flags */
1083 avio_wb32(pb, 1); /* entry count */
1084 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
1085 mov_write_video_tag(pb, track);
1086 else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1087 mov_write_audio_tag(pb, track);
1088 else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
1089 mov_write_subtitle_tag(pb, track);
1090 else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
1091 mov_write_rtp_tag(pb, track);
1092 else if (track->enc->codec_tag == MKTAG('t','m','c','d'))
1093 mov_write_tmcd_tag(pb, track);
1094 return update_size(pb, pos);
1097 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
1099 MOVStts *ctts_entries;
1100 uint32_t entries = 0;
1104 ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */
1105 ctts_entries[0].count = 1;
1106 ctts_entries[0].duration = track->cluster[0].cts;
1107 for (i = 1; i < track->entry; i++) {
1108 if (track->cluster[i].cts == ctts_entries[entries].duration) {
1109 ctts_entries[entries].count++; /* compress */
1112 ctts_entries[entries].duration = track->cluster[i].cts;
1113 ctts_entries[entries].count = 1;
1116 entries++; /* last one */
1117 atom_size = 16 + (entries * 8);
1118 avio_wb32(pb, atom_size); /* size */
1119 ffio_wfourcc(pb, "ctts");
1120 avio_wb32(pb, 0); /* version & flags */
1121 avio_wb32(pb, entries); /* entry count */
1122 for (i = 0; i < entries; i++) {
1123 avio_wb32(pb, ctts_entries[i].count);
1124 avio_wb32(pb, ctts_entries[i].duration);
1126 av_free(ctts_entries);
1130 /* Time to sample atom */
1131 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
1133 MOVStts *stts_entries;
1134 uint32_t entries = -1;
1138 if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
1139 stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
1140 stts_entries[0].count = track->sample_count;
1141 stts_entries[0].duration = 1;
1144 stts_entries = track->entry ?
1145 av_malloc(track->entry * sizeof(*stts_entries)) : /* worst case */
1147 for (i = 0; i < track->entry; i++) {
1148 int duration = get_cluster_duration(track, i);
1149 if (i && duration == stts_entries[entries].duration) {
1150 stts_entries[entries].count++; /* compress */
1153 stts_entries[entries].duration = duration;
1154 stts_entries[entries].count = 1;
1157 entries++; /* last one */
1159 atom_size = 16 + (entries * 8);
1160 avio_wb32(pb, atom_size); /* size */
1161 ffio_wfourcc(pb, "stts");
1162 avio_wb32(pb, 0); /* version & flags */
1163 avio_wb32(pb, entries); /* entry count */
1164 for (i = 0; i < entries; i++) {
1165 avio_wb32(pb, stts_entries[i].count);
1166 avio_wb32(pb, stts_entries[i].duration);
1168 av_free(stts_entries);
1172 static int mov_write_dref_tag(AVIOContext *pb)
1174 avio_wb32(pb, 28); /* size */
1175 ffio_wfourcc(pb, "dref");
1176 avio_wb32(pb, 0); /* version & flags */
1177 avio_wb32(pb, 1); /* entry count */
1179 avio_wb32(pb, 0xc); /* size */
1180 ffio_wfourcc(pb, "url ");
1181 avio_wb32(pb, 1); /* version & flags */
1186 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
1188 int64_t pos = avio_tell(pb);
1189 avio_wb32(pb, 0); /* size */
1190 ffio_wfourcc(pb, "stbl");
1191 mov_write_stsd_tag(pb, track);
1192 mov_write_stts_tag(pb, track);
1193 if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
1194 track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
1195 track->has_keyframes && track->has_keyframes < track->entry)
1196 mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
1197 if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
1198 mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
1199 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
1200 track->flags & MOV_TRACK_CTTS)
1201 mov_write_ctts_tag(pb, track);
1202 mov_write_stsc_tag(pb, track);
1203 mov_write_stsz_tag(pb, track);
1204 mov_write_stco_tag(pb, track);
1205 return update_size(pb, pos);
1208 static int mov_write_dinf_tag(AVIOContext *pb)
1210 int64_t pos = avio_tell(pb);
1211 avio_wb32(pb, 0); /* size */
1212 ffio_wfourcc(pb, "dinf");
1213 mov_write_dref_tag(pb);
1214 return update_size(pb, pos);
1217 static int mov_write_nmhd_tag(AVIOContext *pb)
1220 ffio_wfourcc(pb, "nmhd");
1225 static int mov_write_gmhd_tag(AVIOContext *pb)
1227 avio_wb32(pb, 0x20); /* size */
1228 ffio_wfourcc(pb, "gmhd");
1229 avio_wb32(pb, 0x18); /* gmin size */
1230 ffio_wfourcc(pb, "gmin");/* generic media info */
1231 avio_wb32(pb, 0); /* version & flags */
1232 avio_wb16(pb, 0x40); /* graphics mode = */
1233 avio_wb16(pb, 0x8000); /* opColor (r?) */
1234 avio_wb16(pb, 0x8000); /* opColor (g?) */
1235 avio_wb16(pb, 0x8000); /* opColor (b?) */
1236 avio_wb16(pb, 0); /* balance */
1237 avio_wb16(pb, 0); /* reserved */
1241 static int mov_write_smhd_tag(AVIOContext *pb)
1243 avio_wb32(pb, 16); /* size */
1244 ffio_wfourcc(pb, "smhd");
1245 avio_wb32(pb, 0); /* version & flags */
1246 avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
1247 avio_wb16(pb, 0); /* reserved */
1251 static int mov_write_vmhd_tag(AVIOContext *pb)
1253 avio_wb32(pb, 0x14); /* size (always 0x14) */
1254 ffio_wfourcc(pb, "vmhd");
1255 avio_wb32(pb, 0x01); /* version & flags */
1256 avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
1260 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
1262 const char *hdlr, *descr = NULL, *hdlr_type = NULL;
1263 int64_t pos = avio_tell(pb);
1267 descr = "DataHandler";
1270 hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
1271 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1273 descr = "VideoHandler";
1274 } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1276 descr = "SoundHandler";
1277 } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1278 if (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";
1279 else hdlr_type = "text";
1280 descr = "SubtitleHandler";
1281 } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
1283 descr = "HintHandler";
1284 } else if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
1286 descr = "TimeCodeHandler";
1289 av_get_codec_tag_string(tag_buf, sizeof(tag_buf),
1290 track->enc->codec_tag);
1292 av_log(track->enc, AV_LOG_WARNING,
1293 "Unknown hldr_type for %s / 0x%04X, writing dummy values\n",
1294 tag_buf, track->enc->codec_tag);
1298 avio_wb32(pb, 0); /* size */
1299 ffio_wfourcc(pb, "hdlr");
1300 avio_wb32(pb, 0); /* Version & flags */
1301 avio_write(pb, hdlr, 4); /* handler */
1302 ffio_wfourcc(pb, hdlr_type); /* handler type */
1303 avio_wb32(pb, 0); /* reserved */
1304 avio_wb32(pb, 0); /* reserved */
1305 avio_wb32(pb, 0); /* reserved */
1306 if (!track || track->mode == MODE_MOV)
1307 avio_w8(pb, strlen(descr)); /* pascal string */
1308 avio_write(pb, descr, strlen(descr)); /* handler description */
1309 if (track && track->mode != MODE_MOV)
1310 avio_w8(pb, 0); /* c string */
1311 return update_size(pb, pos);
1314 static int mov_write_hmhd_tag(AVIOContext *pb)
1316 /* This atom must be present, but leaving the values at zero
1317 * seems harmless. */
1318 avio_wb32(pb, 28); /* size */
1319 ffio_wfourcc(pb, "hmhd");
1320 avio_wb32(pb, 0); /* version, flags */
1321 avio_wb16(pb, 0); /* maxPDUsize */
1322 avio_wb16(pb, 0); /* avgPDUsize */
1323 avio_wb32(pb, 0); /* maxbitrate */
1324 avio_wb32(pb, 0); /* avgbitrate */
1325 avio_wb32(pb, 0); /* reserved */
1329 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
1331 int64_t pos = avio_tell(pb);
1332 avio_wb32(pb, 0); /* size */
1333 ffio_wfourcc(pb, "minf");
1334 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
1335 mov_write_vmhd_tag(pb);
1336 else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1337 mov_write_smhd_tag(pb);
1338 else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1339 if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);
1340 else mov_write_nmhd_tag(pb);
1341 } else if (track->tag == MKTAG('r','t','p',' ')) {
1342 mov_write_hmhd_tag(pb);
1343 } else if (track->tag == MKTAG('t','m','c','d')) {
1344 mov_write_gmhd_tag(pb);
1346 if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
1347 mov_write_hdlr_tag(pb, NULL);
1348 mov_write_dinf_tag(pb);
1349 mov_write_stbl_tag(pb, track);
1350 return update_size(pb, pos);
1353 static int mov_write_mdhd_tag(AVIOContext *pb, MOVTrack *track)
1355 int version = track->track_duration < INT32_MAX ? 0 : 1;
1357 if (track->mode == MODE_ISM)
1360 (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
1361 ffio_wfourcc(pb, "mdhd");
1362 avio_w8(pb, version);
1363 avio_wb24(pb, 0); /* flags */
1365 avio_wb64(pb, track->time);
1366 avio_wb64(pb, track->time);
1368 avio_wb32(pb, track->time); /* creation time */
1369 avio_wb32(pb, track->time); /* modification time */
1371 avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
1373 (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
1375 (version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */
1376 avio_wb16(pb, track->language); /* language */
1377 avio_wb16(pb, 0); /* reserved (quality) */
1379 if (version != 0 && track->mode == MODE_MOV) {
1380 av_log(NULL, AV_LOG_ERROR,
1381 "FATAL error, file duration too long for timebase, this file will not be\n"
1382 "playable with quicktime. Choose a different timebase or a different\n"
1383 "container format\n");
1389 static int mov_write_mdia_tag(AVIOContext *pb, MOVTrack *track)
1391 int64_t pos = avio_tell(pb);
1392 avio_wb32(pb, 0); /* size */
1393 ffio_wfourcc(pb, "mdia");
1394 mov_write_mdhd_tag(pb, track);
1395 mov_write_hdlr_tag(pb, track);
1396 mov_write_minf_tag(pb, track);
1397 return update_size(pb, pos);
1400 static int mov_write_tkhd_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
1402 int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,
1403 track->timescale, AV_ROUND_UP);
1404 int version = duration < INT32_MAX ? 0 : 1;
1406 if (track->mode == MODE_ISM)
1409 (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
1410 ffio_wfourcc(pb, "tkhd");
1411 avio_w8(pb, version);
1412 avio_wb24(pb, (track->flags & MOV_TRACK_ENABLED) ?
1413 MOV_TKHD_FLAG_ENABLED | MOV_TKHD_FLAG_IN_MOVIE :
1414 MOV_TKHD_FLAG_IN_MOVIE);
1416 avio_wb64(pb, track->time);
1417 avio_wb64(pb, track->time);
1419 avio_wb32(pb, track->time); /* creation time */
1420 avio_wb32(pb, track->time); /* modification time */
1422 avio_wb32(pb, track->track_id); /* track-id */
1423 avio_wb32(pb, 0); /* reserved */
1425 (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
1427 (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
1429 avio_wb32(pb, 0); /* reserved */
1430 avio_wb32(pb, 0); /* reserved */
1431 avio_wb16(pb, 0); /* layer */
1432 avio_wb16(pb, st ? st->codec->codec_type : 0); /* alternate group) */
1433 /* Volume, only for audio */
1434 if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1435 avio_wb16(pb, 0x0100);
1438 avio_wb16(pb, 0); /* reserved */
1440 /* Matrix structure */
1441 avio_wb32(pb, 0x00010000); /* reserved */
1442 avio_wb32(pb, 0x0); /* reserved */
1443 avio_wb32(pb, 0x0); /* reserved */
1444 avio_wb32(pb, 0x0); /* reserved */
1445 avio_wb32(pb, 0x00010000); /* reserved */
1446 avio_wb32(pb, 0x0); /* reserved */
1447 avio_wb32(pb, 0x0); /* reserved */
1448 avio_wb32(pb, 0x0); /* reserved */
1449 avio_wb32(pb, 0x40000000); /* reserved */
1451 /* Track width and height, for visual only */
1452 if (st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
1453 track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
1454 if (track->mode == MODE_MOV) {
1455 avio_wb32(pb, track->enc->width << 16);
1456 avio_wb32(pb, track->height << 16);
1458 double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
1459 if (!sample_aspect_ratio || track->height != track->enc->height)
1460 sample_aspect_ratio = 1;
1461 avio_wb32(pb, sample_aspect_ratio * track->enc->width * 0x10000);
1462 avio_wb32(pb, track->height * 0x10000);
1471 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
1473 int32_t width = av_rescale(track->enc->sample_aspect_ratio.num, track->enc->width,
1474 track->enc->sample_aspect_ratio.den);
1476 int64_t pos = avio_tell(pb);
1478 avio_wb32(pb, 0); /* size */
1479 ffio_wfourcc(pb, "tapt");
1482 ffio_wfourcc(pb, "clef");
1484 avio_wb32(pb, width << 16);
1485 avio_wb32(pb, track->enc->height << 16);
1488 ffio_wfourcc(pb, "enof");
1490 avio_wb32(pb, track->enc->width << 16);
1491 avio_wb32(pb, track->enc->height << 16);
1493 return update_size(pb, pos);
1496 // This box seems important for the psp playback ... without it the movie seems to hang
1497 static int mov_write_edts_tag(AVIOContext *pb, MOVTrack *track)
1499 int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,
1500 track->timescale, AV_ROUND_UP);
1501 int version = duration < INT32_MAX ? 0 : 1;
1502 int entry_size, entry_count, size;
1503 int64_t delay, start_ct = track->cluster[0].cts;
1504 delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
1505 track->timescale, AV_ROUND_DOWN);
1506 version |= delay < INT32_MAX ? 0 : 1;
1508 entry_size = (version == 1) ? 20 : 12;
1509 entry_count = 1 + (delay > 0);
1510 size = 24 + entry_count * entry_size;
1512 /* write the atom data */
1513 avio_wb32(pb, size);
1514 ffio_wfourcc(pb, "edts");
1515 avio_wb32(pb, size - 8);
1516 ffio_wfourcc(pb, "elst");
1517 avio_w8(pb, version);
1518 avio_wb24(pb, 0); /* flags */
1520 avio_wb32(pb, entry_count);
1521 if (delay > 0) { /* add an empty edit to delay presentation */
1523 avio_wb64(pb, delay);
1526 avio_wb32(pb, delay);
1529 avio_wb32(pb, 0x00010000);
1534 avio_wb64(pb, duration);
1535 avio_wb64(pb, start_ct);
1537 avio_wb32(pb, duration);
1538 avio_wb32(pb, start_ct);
1540 avio_wb32(pb, 0x00010000);
1544 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
1546 avio_wb32(pb, 20); // size
1547 ffio_wfourcc(pb, "tref");
1548 avio_wb32(pb, 12); // size (subatom)
1549 avio_wl32(pb, track->tref_tag);
1550 avio_wb32(pb, track->tref_id);
1554 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
1555 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
1557 avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
1558 ffio_wfourcc(pb, "uuid");
1559 ffio_wfourcc(pb, "USMT");
1560 avio_wb32(pb, 0x21d24fce);
1561 avio_wb32(pb, 0xbb88695c);
1562 avio_wb32(pb, 0xfac9c740);
1563 avio_wb32(pb, 0x1c); // another size here!
1564 ffio_wfourcc(pb, "MTDT");
1565 avio_wb32(pb, 0x00010012);
1566 avio_wb32(pb, 0x0a);
1567 avio_wb32(pb, 0x55c40000);
1573 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
1575 AVFormatContext *ctx = track->rtp_ctx;
1576 char buf[1000] = "";
1579 ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
1580 NULL, NULL, 0, 0, ctx);
1581 av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
1584 avio_wb32(pb, len + 24);
1585 ffio_wfourcc(pb, "udta");
1586 avio_wb32(pb, len + 16);
1587 ffio_wfourcc(pb, "hnti");
1588 avio_wb32(pb, len + 8);
1589 ffio_wfourcc(pb, "sdp ");
1590 avio_write(pb, buf, len);
1594 static int mov_write_trak_tag(AVIOContext *pb, MOVMuxContext *mov,
1595 MOVTrack *track, AVStream *st)
1597 int64_t pos = avio_tell(pb);
1598 avio_wb32(pb, 0); /* size */
1599 ffio_wfourcc(pb, "trak");
1600 mov_write_tkhd_tag(pb, track, st);
1601 if (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS ||
1602 (track->entry && track->cluster[0].dts)) {
1603 if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
1604 mov_write_edts_tag(pb, track); // PSP Movies require edts box
1606 if (track->tref_tag)
1607 mov_write_tref_tag(pb, track);
1608 mov_write_mdia_tag(pb, track);
1609 if (track->mode == MODE_PSP)
1610 mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
1611 if (track->tag == MKTAG('r','t','p',' '))
1612 mov_write_udta_sdp(pb, track);
1613 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO && track->mode == MODE_MOV) {
1614 double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
1615 if (0.0 != sample_aspect_ratio && 1.0 != sample_aspect_ratio)
1616 mov_write_tapt_tag(pb, track);
1618 return update_size(pb, pos);
1621 static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
1623 int i, has_audio = 0, has_video = 0;
1624 int64_t pos = avio_tell(pb);
1625 int audio_profile = mov->iods_audio_profile;
1626 int video_profile = mov->iods_video_profile;
1627 for (i = 0; i < mov->nb_streams; i++) {
1628 if (mov->tracks[i].entry > 0) {
1629 has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
1630 has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
1633 if (audio_profile < 0)
1634 audio_profile = 0xFF - has_audio;
1635 if (video_profile < 0)
1636 video_profile = 0xFF - has_video;
1637 avio_wb32(pb, 0x0); /* size */
1638 ffio_wfourcc(pb, "iods");
1639 avio_wb32(pb, 0); /* version & flags */
1640 put_descr(pb, 0x10, 7);
1641 avio_wb16(pb, 0x004f);
1644 avio_w8(pb, audio_profile);
1645 avio_w8(pb, video_profile);
1647 return update_size(pb, pos);
1650 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
1652 avio_wb32(pb, 0x20); /* size */
1653 ffio_wfourcc(pb, "trex");
1654 avio_wb32(pb, 0); /* version & flags */
1655 avio_wb32(pb, track->track_id); /* track ID */
1656 avio_wb32(pb, 1); /* default sample description index */
1657 avio_wb32(pb, 0); /* default sample duration */
1658 avio_wb32(pb, 0); /* default sample size */
1659 avio_wb32(pb, 0); /* default sample flags */
1663 static int mov_write_mvex_tag(AVIOContext *pb, MOVMuxContext *mov)
1665 int64_t pos = avio_tell(pb);
1667 avio_wb32(pb, 0x0); /* size */
1668 ffio_wfourcc(pb, "mvex");
1669 for (i = 0; i < mov->nb_streams; i++)
1670 mov_write_trex_tag(pb, &mov->tracks[i]);
1671 return update_size(pb, pos);
1674 static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
1676 int max_track_id = 1, i;
1677 int64_t max_track_len_temp, max_track_len = 0;
1680 for (i = 0; i < mov->nb_streams; i++) {
1681 if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
1682 max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
1684 mov->tracks[i].timescale,
1686 if (max_track_len < max_track_len_temp)
1687 max_track_len = max_track_len_temp;
1688 if (max_track_id < mov->tracks[i].track_id)
1689 max_track_id = mov->tracks[i].track_id;
1693 version = max_track_len < UINT32_MAX ? 0 : 1;
1694 (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
1695 ffio_wfourcc(pb, "mvhd");
1696 avio_w8(pb, version);
1697 avio_wb24(pb, 0); /* flags */
1699 avio_wb64(pb, mov->time);
1700 avio_wb64(pb, mov->time);
1702 avio_wb32(pb, mov->time); /* creation time */
1703 avio_wb32(pb, mov->time); /* modification time */
1705 avio_wb32(pb, MOV_TIMESCALE);
1706 (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
1708 avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
1709 avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
1710 avio_wb16(pb, 0); /* reserved */
1711 avio_wb32(pb, 0); /* reserved */
1712 avio_wb32(pb, 0); /* reserved */
1714 /* Matrix structure */
1715 avio_wb32(pb, 0x00010000); /* reserved */
1716 avio_wb32(pb, 0x0); /* reserved */
1717 avio_wb32(pb, 0x0); /* reserved */
1718 avio_wb32(pb, 0x0); /* reserved */
1719 avio_wb32(pb, 0x00010000); /* reserved */
1720 avio_wb32(pb, 0x0); /* reserved */
1721 avio_wb32(pb, 0x0); /* reserved */
1722 avio_wb32(pb, 0x0); /* reserved */
1723 avio_wb32(pb, 0x40000000); /* reserved */
1725 avio_wb32(pb, 0); /* reserved (preview time) */
1726 avio_wb32(pb, 0); /* reserved (preview duration) */
1727 avio_wb32(pb, 0); /* reserved (poster time) */
1728 avio_wb32(pb, 0); /* reserved (selection time) */
1729 avio_wb32(pb, 0); /* reserved (selection duration) */
1730 avio_wb32(pb, 0); /* reserved (current time) */
1731 avio_wb32(pb, max_track_id + 1); /* Next track id */
1735 static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
1738 avio_wb32(pb, 33); /* size */
1739 ffio_wfourcc(pb, "hdlr");
1742 ffio_wfourcc(pb, "mdir");
1743 ffio_wfourcc(pb, "appl");
1750 /* helper function to write a data tag with the specified string as data */
1751 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
1754 int size = 16 + strlen(data);
1755 avio_wb32(pb, size); /* size */
1756 ffio_wfourcc(pb, "data");
1759 avio_write(pb, data, strlen(data));
1763 lang = ff_mov_iso639_to_lang("und", 1);
1764 avio_wb16(pb, strlen(data)); /* string length */
1765 avio_wb16(pb, lang);
1766 avio_write(pb, data, strlen(data));
1767 return strlen(data) + 4;
1771 static int mov_write_string_tag(AVIOContext *pb, const char *name,
1772 const char *value, int lang, int long_style)
1775 if (value && value[0]) {
1776 int64_t pos = avio_tell(pb);
1777 avio_wb32(pb, 0); /* size */
1778 ffio_wfourcc(pb, name);
1779 mov_write_string_data_tag(pb, value, lang, long_style);
1780 size = update_size(pb, pos);
1785 static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
1786 const char *name, const char *tag,
1789 int l, lang = 0, len, len2;
1790 AVDictionaryEntry *t, *t2 = NULL;
1793 if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
1796 len = strlen(t->key);
1797 snprintf(tag2, sizeof(tag2), "%s-", tag);
1798 while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
1799 len2 = strlen(t2->key);
1800 if (len2 == len + 4 && !strcmp(t->value, t2->value)
1801 && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
1806 return mov_write_string_tag(pb, name, t->value, lang, long_style);
1809 /* iTunes track number */
1810 static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
1813 AVDictionaryEntry *t = av_dict_get(s->metadata, "track", NULL, 0);
1814 int size = 0, track = t ? atoi(t->value) : 0;
1816 avio_wb32(pb, 32); /* size */
1817 ffio_wfourcc(pb, "trkn");
1818 avio_wb32(pb, 24); /* size */
1819 ffio_wfourcc(pb, "data");
1820 avio_wb32(pb, 0); // 8 bytes empty
1822 avio_wb16(pb, 0); // empty
1823 avio_wb16(pb, track); // track number
1824 avio_wb16(pb, 0); // total track number
1825 avio_wb16(pb, 0); // empty
1831 /* iTunes meta data list */
1832 static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
1835 int64_t pos = avio_tell(pb);
1836 avio_wb32(pb, 0); /* size */
1837 ffio_wfourcc(pb, "ilst");
1838 mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
1839 mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
1840 mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
1841 mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
1842 mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
1843 mov_write_string_metadata(s, pb, "\251day", "date" , 1);
1844 mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
1845 mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
1846 mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
1847 mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
1848 mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
1849 mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
1850 mov_write_string_metadata(s, pb, "desc", "description",1);
1851 mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
1852 mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
1853 mov_write_string_metadata(s, pb, "tven", "episode_id",1);
1854 mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
1855 mov_write_trkn_tag(pb, mov, s);
1856 return update_size(pb, pos);
1859 /* iTunes meta data tag */
1860 static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
1864 int64_t pos = avio_tell(pb);
1865 avio_wb32(pb, 0); /* size */
1866 ffio_wfourcc(pb, "meta");
1868 mov_write_itunes_hdlr_tag(pb, mov, s);
1869 mov_write_ilst_tag(pb, mov, s);
1870 size = update_size(pb, pos);
1874 static int utf8len(const uint8_t *b)
1879 GET_UTF8(val, *b++, return -1;)
1885 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
1889 GET_UTF8(val, *b++, return -1;)
1892 avio_wb16(pb, 0x00);
1896 static uint16_t language_code(const char *str)
1898 return (((str[0] - 0x60) & 0x1F) << 10) +
1899 (((str[1] - 0x60) & 0x1F) << 5) +
1900 (( str[2] - 0x60) & 0x1F);
1903 static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,
1904 const char *tag, const char *str)
1906 int64_t pos = avio_tell(pb);
1907 AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
1908 if (!t || !utf8len(t->value))
1910 avio_wb32(pb, 0); /* size */
1911 ffio_wfourcc(pb, tag); /* type */
1912 avio_wb32(pb, 0); /* version + flags */
1913 if (!strcmp(tag, "yrrc"))
1914 avio_wb16(pb, atoi(t->value));
1916 avio_wb16(pb, language_code("eng")); /* language */
1917 avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
1918 if (!strcmp(tag, "albm") &&
1919 (t = av_dict_get(s->metadata, "track", NULL, 0)))
1920 avio_w8(pb, atoi(t->value));
1922 return update_size(pb, pos);
1925 static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)
1927 int64_t pos = avio_tell(pb);
1928 int i, nb_chapters = FFMIN(s->nb_chapters, 255);
1930 avio_wb32(pb, 0); // size
1931 ffio_wfourcc(pb, "chpl");
1932 avio_wb32(pb, 0x01000000); // version + flags
1933 avio_wb32(pb, 0); // unknown
1934 avio_w8(pb, nb_chapters);
1936 for (i = 0; i < nb_chapters; i++) {
1937 AVChapter *c = s->chapters[i];
1938 AVDictionaryEntry *t;
1939 avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
1941 if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1942 int len = FFMIN(strlen(t->value), 255);
1944 avio_write(pb, t->value, len);
1948 return update_size(pb, pos);
1951 static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
1954 AVIOContext *pb_buf;
1958 for (i = 0; i < s->nb_streams; i++)
1959 if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {
1963 ret = avio_open_dyn_buf(&pb_buf);
1967 if (mov->mode & MODE_3GP) {
1968 mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
1969 mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
1970 mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
1971 mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
1972 mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
1973 mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
1974 mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
1975 mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
1976 } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
1977 mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
1978 mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
1979 mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
1980 mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
1981 mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
1982 mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
1983 mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
1984 mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
1985 mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
1987 /* iTunes meta data */
1988 mov_write_meta_tag(pb_buf, mov, s);
1992 mov_write_chpl_tag(pb_buf, s);
1994 if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
1995 avio_wb32(pb, size + 8);
1996 ffio_wfourcc(pb, "udta");
1997 avio_write(pb, buf, size);
2004 static void mov_write_psp_udta_tag(AVIOContext *pb,
2005 const char *str, const char *lang, int type)
2007 int len = utf8len(str) + 1;
2010 avio_wb16(pb, len * 2 + 10); /* size */
2011 avio_wb32(pb, type); /* type */
2012 avio_wb16(pb, language_code(lang)); /* language */
2013 avio_wb16(pb, 0x01); /* ? */
2014 ascii_to_wc(pb, str);
2017 static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
2019 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
2023 pos = avio_tell(pb);
2024 avio_wb32(pb, 0); /* size placeholder*/
2025 ffio_wfourcc(pb, "uuid");
2026 ffio_wfourcc(pb, "USMT");
2027 avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
2028 avio_wb32(pb, 0xbb88695c);
2029 avio_wb32(pb, 0xfac9c740);
2031 pos2 = avio_tell(pb);
2032 avio_wb32(pb, 0); /* size placeholder*/
2033 ffio_wfourcc(pb, "MTDT");
2037 avio_wb16(pb, 0x0C); /* size */
2038 avio_wb32(pb, 0x0B); /* type */
2039 avio_wb16(pb, language_code("und")); /* language */
2040 avio_wb16(pb, 0x0); /* ? */
2041 avio_wb16(pb, 0x021C); /* data */
2043 mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
2044 mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
2045 mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
2047 update_size(pb, pos2);
2048 return update_size(pb, pos);
2054 static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
2058 int64_t pos = avio_tell(pb);
2059 avio_wb32(pb, 0); /* size placeholder*/
2060 ffio_wfourcc(pb, "moov");
2062 for (i = 0; i < mov->nb_streams; i++) {
2063 if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
2066 mov->tracks[i].time = mov->time;
2067 mov->tracks[i].track_id = i + 1;
2070 if (mov->chapter_track)
2071 for (i = 0; i < s->nb_streams; i++) {
2072 mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
2073 mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
2075 for (i = 0; i < mov->nb_streams; i++) {
2076 if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
2077 mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
2078 mov->tracks[i].tref_id =
2079 mov->tracks[mov->tracks[i].src_track].track_id;
2083 mov_write_mvhd_tag(pb, mov);
2084 if (mov->mode != MODE_MOV && !mov->iods_skip)
2085 mov_write_iods_tag(pb, mov);
2086 for (i = 0; i < mov->nb_streams; i++) {
2087 if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
2088 mov_write_trak_tag(pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
2091 if (mov->flags & FF_MOV_FLAG_FRAGMENT)
2092 mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
2094 if (mov->mode == MODE_PSP)
2095 mov_write_uuidusmt_tag(pb, s);
2097 mov_write_udta_tag(pb, mov, s);
2099 return update_size(pb, pos);
2102 static void param_write_int(AVIOContext *pb, const char *name, int value)
2104 avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
2107 static void param_write_string(AVIOContext *pb, const char *name, const char *value)
2109 avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
2112 static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
2115 len = FFMIN(sizeof(buf) / 2 - 1, len);
2116 ff_data_to_hex(buf, value, len, 0);
2117 buf[2 * len] = '\0';
2118 avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
2121 static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov)
2123 int64_t pos = avio_tell(pb);
2125 const uint8_t uuid[] = {
2126 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
2127 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
2131 ffio_wfourcc(pb, "uuid");
2132 avio_write(pb, uuid, sizeof(uuid));
2135 avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
2136 avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
2137 avio_printf(pb, "<head>\n");
2138 avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
2140 avio_printf(pb, "</head>\n");
2141 avio_printf(pb, "<body>\n");
2142 avio_printf(pb, "<switch>\n");
2143 for (i = 0; i < mov->nb_streams; i++) {
2144 MOVTrack *track = &mov->tracks[i];
2146 /* track->track_id is initialized in write_moov, and thus isn't known
2148 int track_id = i + 1;
2150 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2152 } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
2157 avio_printf(pb, "<%s systemBitrate=\"%d\">\n", type,
2158 track->enc->bit_rate);
2159 param_write_int(pb, "systemBitrate", track->enc->bit_rate);
2160 param_write_int(pb, "trackID", track_id);
2161 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2162 if (track->enc->codec_id == AV_CODEC_ID_H264) {
2164 int size = track->enc->extradata_size;
2165 if (!ff_avc_write_annexb_extradata(track->enc->extradata, &ptr,
2167 param_write_hex(pb, "CodecPrivateData",
2168 ptr ? ptr : track->enc->extradata,
2172 param_write_string(pb, "FourCC", "H264");
2173 } else if (track->enc->codec_id == AV_CODEC_ID_VC1) {
2174 param_write_string(pb, "FourCC", "WVC1");
2175 param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
2176 track->enc->extradata_size);
2178 param_write_int(pb, "MaxWidth", track->enc->width);
2179 param_write_int(pb, "MaxHeight", track->enc->height);
2180 param_write_int(pb, "DisplayWidth", track->enc->width);
2181 param_write_int(pb, "DisplayHeight", track->enc->height);
2183 if (track->enc->codec_id == AV_CODEC_ID_AAC) {
2184 param_write_string(pb, "FourCC", "AACL");
2185 } else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO) {
2186 param_write_string(pb, "FourCC", "WMAP");
2188 param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
2189 track->enc->extradata_size);
2190 param_write_int(pb, "AudioTag", ff_codec_get_tag(ff_codec_wav_tags,
2191 track->enc->codec_id));
2192 param_write_int(pb, "Channels", track->enc->channels);
2193 param_write_int(pb, "SamplingRate", track->enc->sample_rate);
2194 param_write_int(pb, "BitsPerSample", 16);
2195 param_write_int(pb, "PacketSize", track->enc->block_align ?
2196 track->enc->block_align : 4);
2198 avio_printf(pb, "</%s>\n", type);
2200 avio_printf(pb, "</switch>\n");
2201 avio_printf(pb, "</body>\n");
2202 avio_printf(pb, "</smil>\n");
2204 return update_size(pb, pos);
2207 static int mov_write_mfhd_tag(AVIOContext *pb, MOVMuxContext *mov)
2210 ffio_wfourcc(pb, "mfhd");
2212 avio_wb32(pb, mov->fragments);
2216 static int mov_write_tfhd_tag(AVIOContext *pb, MOVMuxContext *mov,
2217 MOVTrack *track, int64_t moof_offset)
2219 int64_t pos = avio_tell(pb);
2220 uint32_t flags = MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |
2221 MOV_TFHD_BASE_DATA_OFFSET;
2222 if (!track->entry) {
2223 flags |= MOV_TFHD_DURATION_IS_EMPTY;
2225 flags |= MOV_TFHD_DEFAULT_FLAGS;
2227 if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET)
2228 flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
2230 /* Don't set a default sample size, the silverlight player refuses
2231 * to play files with that set. Don't set a default sample duration,
2232 * WMP freaks out if it is set. Don't set a base data offset, PIFF
2233 * file format says it MUST NOT be set. */
2234 if (track->mode == MODE_ISM)
2235 flags &= ~(MOV_TFHD_DEFAULT_SIZE | MOV_TFHD_DEFAULT_DURATION |
2236 MOV_TFHD_BASE_DATA_OFFSET);
2238 avio_wb32(pb, 0); /* size placeholder */
2239 ffio_wfourcc(pb, "tfhd");
2240 avio_w8(pb, 0); /* version */
2241 avio_wb24(pb, flags);
2243 avio_wb32(pb, track->track_id); /* track-id */
2244 if (flags & MOV_TFHD_BASE_DATA_OFFSET)
2245 avio_wb64(pb, moof_offset);
2246 if (flags & MOV_TFHD_DEFAULT_DURATION) {
2247 track->default_duration = get_cluster_duration(track, 0);
2248 avio_wb32(pb, track->default_duration);
2250 if (flags & MOV_TFHD_DEFAULT_SIZE) {
2251 track->default_size = track->entry ? track->cluster[0].size : 1;
2252 avio_wb32(pb, track->default_size);
2254 track->default_size = -1;
2256 if (flags & MOV_TFHD_DEFAULT_FLAGS) {
2257 track->default_sample_flags =
2258 track->enc->codec_type == AVMEDIA_TYPE_VIDEO ?
2259 (MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC) :
2260 MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO;
2261 avio_wb32(pb, track->default_sample_flags);
2264 return update_size(pb, pos);
2267 static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
2269 return entry->flags & MOV_SYNC_SAMPLE ? MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO :
2270 (MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES | MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC);
2273 static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
2274 MOVTrack *track, int moof_size)
2276 int64_t pos = avio_tell(pb);
2277 uint32_t flags = MOV_TRUN_DATA_OFFSET;
2280 for (i = 0; i < track->entry; i++) {
2281 if (get_cluster_duration(track, i) != track->default_duration)
2282 flags |= MOV_TRUN_SAMPLE_DURATION;
2283 if (track->cluster[i].size != track->default_size)
2284 flags |= MOV_TRUN_SAMPLE_SIZE;
2285 if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
2286 flags |= MOV_TRUN_SAMPLE_FLAGS;
2288 if (!(flags & MOV_TRUN_SAMPLE_FLAGS))
2289 flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
2290 if (track->flags & MOV_TRACK_CTTS)
2291 flags |= MOV_TRUN_SAMPLE_CTS;
2293 avio_wb32(pb, 0); /* size placeholder */
2294 ffio_wfourcc(pb, "trun");
2295 avio_w8(pb, 0); /* version */
2296 avio_wb24(pb, flags);
2298 avio_wb32(pb, track->entry); /* sample count */
2299 if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
2300 !(mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) &&
2301 track->track_id != 1)
2302 avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
2304 avio_wb32(pb, moof_size + 8 + track->data_offset +
2305 track->cluster[0].pos); /* data offset */
2306 if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
2307 avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
2309 for (i = 0; i < track->entry; i++) {
2310 if (flags & MOV_TRUN_SAMPLE_DURATION)
2311 avio_wb32(pb, get_cluster_duration(track, i));
2312 if (flags & MOV_TRUN_SAMPLE_SIZE)
2313 avio_wb32(pb, track->cluster[i].size);
2314 if (flags & MOV_TRUN_SAMPLE_FLAGS)
2315 avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
2316 if (flags & MOV_TRUN_SAMPLE_CTS)
2317 avio_wb32(pb, track->cluster[i].cts);
2320 return update_size(pb, pos);
2323 static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
2325 int64_t pos = avio_tell(pb);
2326 const uint8_t uuid[] = {
2327 0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
2328 0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
2331 avio_wb32(pb, 0); /* size placeholder */
2332 ffio_wfourcc(pb, "uuid");
2333 avio_write(pb, uuid, sizeof(uuid));
2336 avio_wb64(pb, track->frag_start);
2337 avio_wb64(pb, track->start_dts + track->track_duration -
2338 track->cluster[0].dts);
2340 return update_size(pb, pos);
2343 static int mov_write_tfrf_tag(AVIOContext *pb, MOVMuxContext *mov,
2344 MOVTrack *track, int entry)
2346 int n = track->nb_frag_info - 1 - entry, i;
2347 int size = 8 + 16 + 4 + 1 + 16*n;
2348 const uint8_t uuid[] = {
2349 0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
2350 0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
2356 avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
2357 avio_wb32(pb, size);
2358 ffio_wfourcc(pb, "uuid");
2359 avio_write(pb, uuid, sizeof(uuid));
2363 for (i = 0; i < n; i++) {
2364 int index = entry + 1 + i;
2365 avio_wb64(pb, track->frag_info[index].time);
2366 avio_wb64(pb, track->frag_info[index].duration);
2368 if (n < mov->ism_lookahead) {
2369 int free_size = 16 * (mov->ism_lookahead - n);
2370 avio_wb32(pb, free_size);
2371 ffio_wfourcc(pb, "free");
2372 for (i = 0; i < free_size - 8; i++)
2379 static int mov_write_tfrf_tags(AVIOContext *pb, MOVMuxContext *mov,
2382 int64_t pos = avio_tell(pb);
2384 for (i = 0; i < mov->ism_lookahead; i++) {
2385 /* Update the tfrf tag for the last ism_lookahead fragments,
2386 * nb_frag_info - 1 is the next fragment to be written. */
2387 mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
2389 avio_seek(pb, pos, SEEK_SET);
2393 static int mov_write_traf_tag(AVIOContext *pb, MOVMuxContext *mov,
2394 MOVTrack *track, int64_t moof_offset,
2397 int64_t pos = avio_tell(pb);
2398 avio_wb32(pb, 0); /* size placeholder */
2399 ffio_wfourcc(pb, "traf");
2401 mov_write_tfhd_tag(pb, mov, track, moof_offset);
2402 mov_write_trun_tag(pb, mov, track, moof_size);
2403 if (mov->mode == MODE_ISM) {
2404 mov_write_tfxd_tag(pb, track);
2406 if (mov->ism_lookahead) {
2407 int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
2409 track->tfrf_offset = avio_tell(pb);
2410 avio_wb32(pb, 8 + size);
2411 ffio_wfourcc(pb, "free");
2412 for (i = 0; i < size; i++)
2417 return update_size(pb, pos);
2420 static int mov_write_moof_tag_internal(AVIOContext *pb, MOVMuxContext *mov,
2421 int tracks, int moof_size)
2423 int64_t pos = avio_tell(pb);
2426 avio_wb32(pb, 0); /* size placeholder */
2427 ffio_wfourcc(pb, "moof");
2429 mov_write_mfhd_tag(pb, mov);
2430 for (i = 0; i < mov->nb_streams; i++) {
2431 MOVTrack *track = &mov->tracks[i];
2432 if (tracks >= 0 && i != tracks)
2436 mov_write_traf_tag(pb, mov, track, pos, moof_size);
2439 return update_size(pb, pos);
2442 static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks)
2444 AVIOContext *avio_buf;
2447 if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
2449 mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
2450 moof_size = ffio_close_null_buf(avio_buf);
2451 return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
2454 static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)
2456 int64_t pos = avio_tell(pb);
2459 avio_wb32(pb, 0); /* size placeholder */
2460 ffio_wfourcc(pb, "tfra");
2461 avio_w8(pb, 1); /* version */
2464 avio_wb32(pb, track->track_id);
2465 avio_wb32(pb, 0); /* length of traf/trun/sample num */
2466 avio_wb32(pb, track->nb_frag_info);
2467 for (i = 0; i < track->nb_frag_info; i++) {
2468 avio_wb64(pb, track->frag_info[i].time);
2469 avio_wb64(pb, track->frag_info[i].offset);
2470 avio_w8(pb, 1); /* traf number */
2471 avio_w8(pb, 1); /* trun number */
2472 avio_w8(pb, 1); /* sample number */
2475 return update_size(pb, pos);
2478 static int mov_write_mfra_tag(AVIOContext *pb, MOVMuxContext *mov)
2480 int64_t pos = avio_tell(pb);
2483 avio_wb32(pb, 0); /* size placeholder */
2484 ffio_wfourcc(pb, "mfra");
2485 /* An empty mfra atom is enough to indicate to the publishing point that
2486 * the stream has ended. */
2487 if (mov->flags & FF_MOV_FLAG_ISML)
2488 return update_size(pb, pos);
2490 for (i = 0; i < mov->nb_streams; i++) {
2491 MOVTrack *track = &mov->tracks[i];
2492 if (track->nb_frag_info)
2493 mov_write_tfra_tag(pb, track);
2497 ffio_wfourcc(pb, "mfro");
2498 avio_wb32(pb, 0); /* version + flags */
2499 avio_wb32(pb, avio_tell(pb) + 4 - pos);
2501 return update_size(pb, pos);
2504 static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)
2506 avio_wb32(pb, 8); // placeholder for extended size field (64 bit)
2507 ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
2509 mov->mdat_pos = avio_tell(pb);
2510 avio_wb32(pb, 0); /* size placeholder*/
2511 ffio_wfourcc(pb, "mdat");
2515 /* TODO: This needs to be more general */
2516 static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
2518 MOVMuxContext *mov = s->priv_data;
2519 int64_t pos = avio_tell(pb);
2520 int has_h264 = 0, has_video = 0;
2524 for (i = 0; i < s->nb_streams; i++) {
2525 AVStream *st = s->streams[i];
2526 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2528 if (st->codec->codec_id == AV_CODEC_ID_H264)
2532 avio_wb32(pb, 0); /* size */
2533 ffio_wfourcc(pb, "ftyp");
2535 if (mov->mode == MODE_3GP) {
2536 ffio_wfourcc(pb, has_h264 ? "3gp6" : "3gp4");
2537 minor = has_h264 ? 0x100 : 0x200;
2538 } else if (mov->mode & MODE_3G2) {
2539 ffio_wfourcc(pb, has_h264 ? "3g2b" : "3g2a");
2540 minor = has_h264 ? 0x20000 : 0x10000;
2541 } else if (mov->mode == MODE_PSP)
2542 ffio_wfourcc(pb, "MSNV");
2543 else if (mov->mode == MODE_MP4)
2544 ffio_wfourcc(pb, "isom");
2545 else if (mov->mode == MODE_IPOD)
2546 ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
2547 else if (mov->mode == MODE_ISM)
2548 ffio_wfourcc(pb, "isml");
2550 ffio_wfourcc(pb, "qt ");
2552 avio_wb32(pb, minor);
2554 if (mov->mode == MODE_MOV)
2555 ffio_wfourcc(pb, "qt ");
2556 else if (mov->mode == MODE_ISM) {
2557 ffio_wfourcc(pb, "piff");
2558 ffio_wfourcc(pb, "iso2");
2560 ffio_wfourcc(pb, "isom");
2561 ffio_wfourcc(pb, "iso2");
2563 ffio_wfourcc(pb, "avc1");
2566 if (mov->mode == MODE_3GP)
2567 ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
2568 else if (mov->mode & MODE_3G2)
2569 ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
2570 else if (mov->mode == MODE_PSP)
2571 ffio_wfourcc(pb, "MSNV");
2572 else if (mov->mode == MODE_MP4)
2573 ffio_wfourcc(pb, "mp41");
2574 return update_size(pb, pos);
2577 static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
2579 AVCodecContext *video_codec = s->streams[0]->codec;
2580 AVCodecContext *audio_codec = s->streams[1]->codec;
2581 int audio_rate = audio_codec->sample_rate;
2582 int frame_rate = ((video_codec->time_base.den) * (0x10000)) / (video_codec->time_base.num);
2583 int audio_kbitrate = audio_codec->bit_rate / 1000;
2584 int video_kbitrate = FFMIN(video_codec->bit_rate / 1000, 800 - audio_kbitrate);
2586 avio_wb32(pb, 0x94); /* size */
2587 ffio_wfourcc(pb, "uuid");
2588 ffio_wfourcc(pb, "PROF");
2590 avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
2591 avio_wb32(pb, 0xbb88695c);
2592 avio_wb32(pb, 0xfac9c740);
2594 avio_wb32(pb, 0x0); /* ? */
2595 avio_wb32(pb, 0x3); /* 3 sections ? */
2597 avio_wb32(pb, 0x14); /* size */
2598 ffio_wfourcc(pb, "FPRF");
2599 avio_wb32(pb, 0x0); /* ? */
2600 avio_wb32(pb, 0x0); /* ? */
2601 avio_wb32(pb, 0x0); /* ? */
2603 avio_wb32(pb, 0x2c); /* size */
2604 ffio_wfourcc(pb, "APRF"); /* audio */
2606 avio_wb32(pb, 0x2); /* TrackID */
2607 ffio_wfourcc(pb, "mp4a");
2608 avio_wb32(pb, 0x20f);
2610 avio_wb32(pb, audio_kbitrate);
2611 avio_wb32(pb, audio_kbitrate);
2612 avio_wb32(pb, audio_rate);
2613 avio_wb32(pb, audio_codec->channels);
2615 avio_wb32(pb, 0x34); /* size */
2616 ffio_wfourcc(pb, "VPRF"); /* video */
2618 avio_wb32(pb, 0x1); /* TrackID */
2619 if (video_codec->codec_id == AV_CODEC_ID_H264) {
2620 ffio_wfourcc(pb, "avc1");
2621 avio_wb16(pb, 0x014D);
2622 avio_wb16(pb, 0x0015);
2624 ffio_wfourcc(pb, "mp4v");
2625 avio_wb16(pb, 0x0000);
2626 avio_wb16(pb, 0x0103);
2629 avio_wb32(pb, video_kbitrate);
2630 avio_wb32(pb, video_kbitrate);
2631 avio_wb32(pb, frame_rate);
2632 avio_wb32(pb, frame_rate);
2633 avio_wb16(pb, video_codec->width);
2634 avio_wb16(pb, video_codec->height);
2635 avio_wb32(pb, 0x010001); /* ? */
2638 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
2641 int i, closed_gop = 0;
2643 for (i = 0; i < pkt->size - 4; i++) {
2644 c = (c << 8) + pkt->data[i];
2645 if (c == 0x1b8) { // gop
2646 closed_gop = pkt->data[i + 4] >> 6 & 0x01;
2647 } else if (c == 0x100) { // pic
2648 int temp_ref = (pkt->data[i + 1] << 2) | (pkt->data[i + 2] >> 6);
2649 if (!temp_ref || closed_gop) // I picture is not reordered
2650 *flags = MOV_SYNC_SAMPLE;
2652 *flags = MOV_PARTIAL_SYNC_SAMPLE;
2659 static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk, int fragment)
2661 const uint8_t *start, *next, *end = pkt->data + pkt->size;
2662 int seq = 0, entry = 0;
2663 int key = pkt->flags & AV_PKT_FLAG_KEY;
2664 start = find_next_marker(pkt->data, end);
2665 for (next = start; next < end; start = next) {
2666 next = find_next_marker(start + 4, end);
2667 switch (AV_RB32(start)) {
2668 case VC1_CODE_SEQHDR:
2671 case VC1_CODE_ENTRYPOINT:
2674 case VC1_CODE_SLICE:
2675 trk->vc1_info.slices = 1;
2679 if (!trk->entry && !fragment) {
2680 /* First packet in first fragment */
2681 trk->vc1_info.first_packet_seq = seq;
2682 trk->vc1_info.first_packet_entry = entry;
2683 } else if ((seq && !trk->vc1_info.packet_seq) ||
2684 (entry && !trk->vc1_info.packet_entry)) {
2686 for (i = 0; i < trk->entry; i++)
2687 trk->cluster[i].flags &= ~MOV_SYNC_SAMPLE;
2688 trk->has_keyframes = 0;
2690 trk->vc1_info.packet_seq = 1;
2692 trk->vc1_info.packet_entry = 1;
2694 /* First fragment */
2695 if ((!seq || trk->vc1_info.first_packet_seq) &&
2696 (!entry || trk->vc1_info.first_packet_entry)) {
2697 /* First packet had the same headers as this one, readd the
2698 * sync sample flag. */
2699 trk->cluster[0].flags |= MOV_SYNC_SAMPLE;
2700 trk->has_keyframes = 1;
2704 if (trk->vc1_info.packet_seq && trk->vc1_info.packet_entry)
2706 else if (trk->vc1_info.packet_seq)
2708 else if (trk->vc1_info.packet_entry)
2711 trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;
2712 trk->has_keyframes++;
2716 static int mov_flush_fragment(AVFormatContext *s)
2718 MOVMuxContext *mov = s->priv_data;
2719 int i, first_track = -1;
2720 int64_t mdat_size = 0;
2722 if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
2725 if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV) && mov->fragments == 0) {
2726 int64_t pos = avio_tell(s->pb);
2728 AVIOContext *moov_buf;
2732 for (i = 0; i < mov->nb_streams; i++)
2733 if (!mov->tracks[i].entry)
2735 /* Don't write the initial moov unless all tracks have data */
2736 if (i < mov->nb_streams)
2739 if ((ret = ffio_open_null_buf(&moov_buf)) < 0)
2741 mov_write_moov_tag(moov_buf, mov, s);
2742 buf_size = ffio_close_null_buf(moov_buf);
2743 for (i = 0; i < mov->nb_streams; i++)
2744 mov->tracks[i].data_offset = pos + buf_size + 8;
2746 mov_write_moov_tag(s->pb, mov, s);
2748 buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
2749 mov->mdat_buf = NULL;
2750 avio_wb32(s->pb, buf_size + 8);
2751 ffio_wfourcc(s->pb, "mdat");
2752 avio_write(s->pb, buf, buf_size);
2757 for (i = 0; i < mov->nb_streams; i++) {
2758 if (mov->tracks[i].entry)
2759 mov->tracks[i].frag_start += mov->tracks[i].start_dts +
2760 mov->tracks[i].track_duration -
2761 mov->tracks[i].cluster[0].dts;
2762 mov->tracks[i].entry = 0;
2768 for (i = 0; i < mov->nb_streams; i++) {
2769 MOVTrack *track = &mov->tracks[i];
2770 if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF)
2771 track->data_offset = 0;
2773 track->data_offset = mdat_size;
2774 if (!track->mdat_buf)
2776 mdat_size += avio_tell(track->mdat_buf);
2777 if (first_track < 0)
2784 for (i = 0; i < mov->nb_streams; i++) {
2785 MOVTrack *track = &mov->tracks[i];
2786 int buf_size, write_moof = 1, moof_tracks = -1;
2788 int64_t duration = 0;
2791 duration = track->start_dts + track->track_duration -
2792 track->cluster[0].dts;
2793 if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
2794 if (!track->mdat_buf)
2796 mdat_size = avio_tell(track->mdat_buf);
2799 write_moof = i == first_track;
2803 MOVFragmentInfo *info;
2805 track->nb_frag_info++;
2806 if (track->nb_frag_info >= track->frag_info_capacity) {
2807 unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
2808 if (av_reallocp_array(&track->frag_info,
2810 sizeof(*track->frag_info)))
2811 return AVERROR(ENOMEM);
2812 track->frag_info_capacity = new_capacity;
2814 info = &track->frag_info[track->nb_frag_info - 1];
2815 info->offset = avio_tell(s->pb);
2816 info->time = mov->tracks[i].frag_start;
2817 info->duration = duration;
2818 mov_write_tfrf_tags(s->pb, mov, track);
2820 mov_write_moof_tag(s->pb, mov, moof_tracks);
2821 info->tfrf_offset = track->tfrf_offset;
2824 avio_wb32(s->pb, mdat_size + 8);
2825 ffio_wfourcc(s->pb, "mdat");
2829 track->frag_start += duration;
2831 if (!track->mdat_buf)
2833 buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
2834 track->mdat_buf = NULL;
2836 avio_write(s->pb, buf, buf_size);
2846 int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
2848 MOVMuxContext *mov = s->priv_data;
2849 AVIOContext *pb = s->pb;
2850 MOVTrack *trk = &mov->tracks[pkt->stream_index];
2851 AVCodecContext *enc = trk->enc;
2852 unsigned int samples_in_chunk = 0;
2853 int size = pkt->size;
2854 uint8_t *reformatted_data = NULL;
2856 if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
2858 if (mov->fragments > 0) {
2859 if (!trk->mdat_buf) {
2860 if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
2865 if (!mov->mdat_buf) {
2866 if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)
2873 if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
2874 /* We must find out how many AMR blocks there are in one packet */
2875 static uint16_t packed_size[16] =
2876 {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
2879 while (len < size && samples_in_chunk < 100) {
2880 len += packed_size[(pkt->data[len] >> 3) & 0x0F];
2883 if (samples_in_chunk > 1) {
2884 av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
2887 } else if (trk->sample_size)
2888 samples_in_chunk = size / trk->sample_size;
2890 samples_in_chunk = 1;
2892 /* copy extradata if it exists */
2893 if (trk->vos_len == 0 && enc->extradata_size > 0) {
2894 trk->vos_len = enc->extradata_size;
2895 trk->vos_data = av_malloc(trk->vos_len);
2896 memcpy(trk->vos_data, enc->extradata, trk->vos_len);
2899 if (enc->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1) {
2900 /* from x264 or from bytestream h264 */
2901 /* nal reformating needed */
2902 if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
2903 ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
2905 avio_write(pb, reformatted_data, size);
2907 size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
2910 avio_write(pb, pkt->data, size);
2913 if ((enc->codec_id == AV_CODEC_ID_DNXHD ||
2914 enc->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
2915 /* copy frame to create needed atoms */
2916 trk->vos_len = size;
2917 trk->vos_data = av_malloc(size);
2919 return AVERROR(ENOMEM);
2920 memcpy(trk->vos_data, pkt->data, size);
2923 if (trk->entry >= trk->cluster_capacity) {
2924 unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
2925 if (av_reallocp_array(&trk->cluster, new_capacity,
2926 sizeof(*trk->cluster)))
2927 return AVERROR(ENOMEM);
2928 trk->cluster_capacity = new_capacity;
2931 trk->cluster[trk->entry].pos = avio_tell(pb) - size;
2932 trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;
2933 trk->cluster[trk->entry].size = size;
2934 trk->cluster[trk->entry].entries = samples_in_chunk;
2935 trk->cluster[trk->entry].dts = pkt->dts;
2936 if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
2937 /* First packet of a new fragment. We already wrote the duration
2938 * of the last packet of the previous fragment based on track_duration,
2939 * which might not exactly match our dts. Therefore adjust the dts
2940 * of this packet to be what the previous packets duration implies. */
2941 trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
2943 if (trk->start_dts == AV_NOPTS_VALUE)
2944 trk->start_dts = pkt->dts;
2945 trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
2947 if (pkt->pts == AV_NOPTS_VALUE) {
2948 av_log(s, AV_LOG_WARNING, "pts has no value\n");
2949 pkt->pts = pkt->dts;
2951 if (pkt->dts != pkt->pts)
2952 trk->flags |= MOV_TRACK_CTTS;
2953 trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
2954 trk->cluster[trk->entry].flags = 0;
2955 if (enc->codec_id == AV_CODEC_ID_VC1) {
2956 mov_parse_vc1_frame(pkt, trk, mov->fragments);
2957 } else if (pkt->flags & AV_PKT_FLAG_KEY) {
2958 if (mov->mode == MODE_MOV && enc->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
2959 trk->entry > 0) { // force sync sample for the first key frame
2960 mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
2961 if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
2962 trk->flags |= MOV_TRACK_STPS;
2964 trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
2966 if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
2967 trk->has_keyframes++;
2970 trk->sample_count += samples_in_chunk;
2971 mov->mdat_size += size;
2973 if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
2974 ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
2975 reformatted_data, size);
2976 av_free(reformatted_data);
2980 static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
2983 mov_flush_fragment(s);
2986 MOVMuxContext *mov = s->priv_data;
2987 MOVTrack *trk = &mov->tracks[pkt->stream_index];
2988 AVCodecContext *enc = trk->enc;
2989 int64_t frag_duration = 0;
2990 int size = pkt->size;
2993 return 0; /* Discard 0 sized packets */
2996 frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
2997 s->streams[pkt->stream_index]->time_base,
2999 if ((mov->max_fragment_duration &&
3000 frag_duration >= mov->max_fragment_duration) ||
3001 (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
3002 (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
3003 enc->codec_type == AVMEDIA_TYPE_VIDEO &&
3004 trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
3005 if (frag_duration >= mov->min_fragment_duration)
3006 mov_flush_fragment(s);
3009 return ff_mov_write_packet(s, pkt);
3013 // QuickTime chapters involve an additional text track with the chapter names
3014 // as samples, and a tref pointing from the other tracks to the chapter one.
3015 static int mov_create_chapter_track(AVFormatContext *s, int tracknum)
3017 MOVMuxContext *mov = s->priv_data;
3018 MOVTrack *track = &mov->tracks[tracknum];
3019 AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
3021 // These properties are required to make QT recognize the chapter track
3022 uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };
3024 track->mode = mov->mode;
3025 track->tag = MKTAG('t','e','x','t');
3026 track->timescale = MOV_TIMESCALE;
3027 track->enc = avcodec_alloc_context3(NULL);
3029 return AVERROR(ENOMEM);
3030 track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3031 track->enc->extradata = av_malloc(sizeof(chapter_properties));
3032 if (track->enc->extradata == NULL)
3033 return AVERROR(ENOMEM);
3034 track->enc->extradata_size = sizeof(chapter_properties);
3035 memcpy(track->enc->extradata, chapter_properties, sizeof(chapter_properties));
3037 for (i = 0; i < s->nb_chapters; i++) {
3038 AVChapter *c = s->chapters[i];
3039 AVDictionaryEntry *t;
3041 int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
3042 pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
3043 pkt.duration = end - pkt.dts;
3045 if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
3046 len = strlen(t->value);
3048 pkt.data = av_malloc(pkt.size);
3050 return AVERROR(ENOMEM);
3051 AV_WB16(pkt.data, len);
3052 memcpy(pkt.data + 2, t->value, len);
3053 ff_mov_write_packet(s, &pkt);
3054 av_freep(&pkt.data);
3062 * st->disposition controls the "enabled" flag in the tkhd tag.
3063 * QuickTime will not play a track if it is not enabled. So make sure
3064 * that one track of each type (audio, video, subtitle) is enabled.
3066 * Subtitles are special. For audio and video, setting "enabled" also
3067 * makes the track "default" (i.e. it is rendered when played). For
3068 * subtitles, an "enabled" subtitle is not rendered by default, but
3069 * if no subtitle is enabled, the subtitle menu in QuickTime will be
3072 static void enable_tracks(AVFormatContext *s)
3074 MOVMuxContext *mov = s->priv_data;
3076 uint8_t enabled[AVMEDIA_TYPE_NB];
3077 int first[AVMEDIA_TYPE_NB];
3079 for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
3084 for (i = 0; i < s->nb_streams; i++) {
3085 AVStream *st = s->streams[i];
3087 if (st->codec->codec_type <= AVMEDIA_TYPE_UNKNOWN ||
3088 st->codec->codec_type >= AVMEDIA_TYPE_NB)
3091 if (first[st->codec->codec_type] < 0)
3092 first[st->codec->codec_type] = i;
3093 if (st->disposition & AV_DISPOSITION_DEFAULT) {
3094 mov->tracks[i].flags |= MOV_TRACK_ENABLED;
3095 enabled[st->codec->codec_type] = 1;
3099 for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
3101 case AVMEDIA_TYPE_VIDEO:
3102 case AVMEDIA_TYPE_AUDIO:
3103 case AVMEDIA_TYPE_SUBTITLE:
3104 if (!enabled[i] && first[i] >= 0)
3105 mov->tracks[first[i]].flags |= MOV_TRACK_ENABLED;
3111 static void mov_free(AVFormatContext *s)
3113 MOVMuxContext *mov = s->priv_data;
3116 if (mov->chapter_track) {
3117 if (mov->tracks[mov->chapter_track].enc)
3118 av_free(mov->tracks[mov->chapter_track].enc->extradata);
3119 av_freep(&mov->tracks[mov->chapter_track].enc);
3122 for (i = 0; i < mov->nb_streams; i++) {
3123 if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
3124 ff_mov_close_hinting(&mov->tracks[i]);
3125 av_freep(&mov->tracks[i].cluster);
3126 av_freep(&mov->tracks[i].frag_info);
3128 if (mov->tracks[i].vos_len)
3129 av_free(mov->tracks[i].vos_data);
3132 av_freep(&mov->tracks);
3135 static int mov_write_header(AVFormatContext *s)
3137 AVIOContext *pb = s->pb;
3138 MOVMuxContext *mov = s->priv_data;
3139 AVDictionaryEntry *t;
3140 int i, hint_track = 0;
3142 /* Default mode == MP4 */
3143 mov->mode = MODE_MP4;
3145 if (s->oformat != NULL) {
3146 if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
3147 else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
3148 else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
3149 else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
3150 else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
3151 else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM;
3154 /* Set the FRAGMENT flag if any of the fragmentation methods are
3156 if (mov->max_fragment_duration || mov->max_fragment_size ||
3157 mov->flags & (FF_MOV_FLAG_EMPTY_MOOV |
3158 FF_MOV_FLAG_FRAG_KEYFRAME |
3159 FF_MOV_FLAG_FRAG_CUSTOM))
3160 mov->flags |= FF_MOV_FLAG_FRAGMENT;
3162 /* Set other implicit flags immediately */
3163 if (mov->mode == MODE_ISM)
3164 mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF |
3165 FF_MOV_FLAG_FRAGMENT;
3167 /* faststart: moov at the beginning of the file, if supported */
3168 if (mov->flags & FF_MOV_FLAG_FASTSTART) {
3169 if ((mov->flags & FF_MOV_FLAG_FRAGMENT) ||
3170 (s->flags & AVFMT_FLAG_CUSTOM_IO)) {
3171 av_log(s, AV_LOG_WARNING, "The faststart flag is incompatible "
3172 "with fragmentation and custom IO, disabling faststart\n");
3173 mov->flags &= ~FF_MOV_FLAG_FASTSTART;
3177 /* Non-seekable output is ok if using fragmentation. If ism_lookahead
3178 * is enabled, we don't support non-seekable output at all. */
3179 if (!s->pb->seekable &&
3180 (!(mov->flags & FF_MOV_FLAG_FRAGMENT) || mov->ism_lookahead)) {
3181 av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
3186 mov_write_ftyp_tag(pb,s);
3187 if (mov->mode == MODE_PSP) {
3188 if (s->nb_streams != 2) {
3189 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
3192 mov_write_uuidprof_tag(pb, s);
3195 mov->nb_streams = s->nb_streams;
3196 if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)
3197 mov->chapter_track = mov->nb_streams++;
3199 if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
3200 /* Add hint tracks for each audio and video stream */
3201 hint_track = mov->nb_streams;
3202 for (i = 0; i < s->nb_streams; i++) {
3203 AVStream *st = s->streams[i];
3204 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3205 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3211 // Reserve an extra stream for chapters for the case where chapters
3212 // are written in the trailer
3213 mov->tracks = av_mallocz((mov->nb_streams + 1) * sizeof(*mov->tracks));
3215 return AVERROR(ENOMEM);
3217 for (i = 0; i < s->nb_streams; i++) {
3218 AVStream *st= s->streams[i];
3219 MOVTrack *track= &mov->tracks[i];
3220 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
3222 track->enc = st->codec;
3223 track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
3224 if (track->language < 0)
3225 track->language = 0;
3226 track->mode = mov->mode;
3227 track->tag = mov_find_codec_tag(s, track);
3229 av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "
3230 "codec not currently supported in container\n", i);
3233 /* If hinting of this track is enabled by a later hint track,
3234 * this is updated. */
3235 track->hint_track = -1;
3236 track->start_dts = AV_NOPTS_VALUE;
3237 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3238 if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
3239 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
3240 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
3241 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {
3242 av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
3245 track->height = track->tag >> 24 == 'n' ? 486 : 576;
3247 track->timescale = st->codec->time_base.den;
3248 if (track->mode == MODE_MOV && track->timescale > 100000)
3249 av_log(s, AV_LOG_WARNING,
3250 "WARNING codec timebase is very high. If duration is too long,\n"
3251 "file may not be playable by quicktime. Specify a shorter timebase\n"
3252 "or choose different container.\n");
3253 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3254 track->timescale = st->codec->sample_rate;
3255 /* set sample_size for PCM and ADPCM */
3256 if (av_get_bits_per_sample(st->codec->codec_id) ||
3257 st->codec->codec_id == AV_CODEC_ID_ILBC) {
3258 if (!st->codec->block_align) {
3259 av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set\n", i);
3262 track->sample_size = st->codec->block_align;
3264 /* set audio_vbr for compressed audio */
3265 if (av_get_bits_per_sample(st->codec->codec_id) < 8) {
3266 track->audio_vbr = 1;
3268 if (track->mode != MODE_MOV &&
3269 track->enc->codec_id == AV_CODEC_ID_MP3 && track->timescale < 16000) {
3270 av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",
3271 i, track->enc->sample_rate);
3274 } else if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3275 track->timescale = st->codec->time_base.den;
3276 } else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
3277 track->timescale = st->codec->time_base.den;
3280 track->height = st->codec->height;
3281 /* The ism specific timescale isn't mandatory, but is assumed by
3282 * some tools, such as mp4split. */
3283 if (mov->mode == MODE_ISM)
3284 track->timescale = 10000000;
3286 avpriv_set_pts_info(st, 64, 1, track->timescale);
3288 /* copy extradata if it exists */
3289 if (st->codec->extradata_size) {
3290 track->vos_len = st->codec->extradata_size;
3291 track->vos_data = av_malloc(track->vos_len);
3292 memcpy(track->vos_data, st->codec->extradata, track->vos_len);
3298 if (mov->mode == MODE_ISM) {
3299 /* If no fragmentation options have been set, set a default. */
3300 if (!(mov->flags & (FF_MOV_FLAG_FRAG_KEYFRAME |
3301 FF_MOV_FLAG_FRAG_CUSTOM)) &&
3302 !mov->max_fragment_duration && !mov->max_fragment_size)
3303 mov->flags |= FF_MOV_FLAG_FRAG_KEYFRAME;
3306 if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
3307 if (mov->flags & FF_MOV_FLAG_FASTSTART)
3308 mov->reserved_moov_pos = avio_tell(pb);
3309 mov_write_mdat_tag(pb, mov);
3312 if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
3313 mov->time = ff_iso8601_to_unix_time(t->value);
3315 mov->time += 0x7C25B080; // 1970 based -> 1904 based
3317 if (mov->chapter_track)
3318 if (mov_create_chapter_track(s, mov->chapter_track) < 0)
3321 if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
3322 /* Initialize the hint tracks for each audio and video stream */
3323 for (i = 0; i < s->nb_streams; i++) {
3324 AVStream *st = s->streams[i];
3325 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3326 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3327 ff_mov_init_hinting(s, hint_track, i);
3335 if (mov->flags & FF_MOV_FLAG_ISML)
3336 mov_write_isml_manifest(pb, mov);
3338 if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3339 mov_write_moov_tag(pb, mov, s);
3349 static int get_moov_size(AVFormatContext *s)
3352 AVIOContext *moov_buf;
3353 MOVMuxContext *mov = s->priv_data;
3355 if ((ret = ffio_open_null_buf(&moov_buf)) < 0)
3357 mov_write_moov_tag(moov_buf, mov, s);
3358 return ffio_close_null_buf(moov_buf);
3362 * This function gets the moov size if moved to the top of the file: the chunk
3363 * offset table can switch between stco (32-bit entries) to co64 (64-bit
3364 * entries) when the moov is moved to the beginning, so the size of the moov
3365 * would change. It also updates the chunk offset tables.
3367 static int compute_moov_size(AVFormatContext *s)
3369 int i, moov_size, moov_size2;
3370 MOVMuxContext *mov = s->priv_data;
3372 moov_size = get_moov_size(s);
3376 for (i = 0; i < mov->nb_streams; i++)
3377 mov->tracks[i].data_offset += moov_size;
3379 moov_size2 = get_moov_size(s);
3383 /* if the size changed, we just switched from stco to co64 and need to
3384 * update the offsets */
3385 if (moov_size2 != moov_size)
3386 for (i = 0; i < mov->nb_streams; i++)
3387 mov->tracks[i].data_offset += moov_size2 - moov_size;
3392 static int shift_data(AVFormatContext *s)
3394 int ret = 0, moov_size;
3395 MOVMuxContext *mov = s->priv_data;
3396 int64_t pos, pos_end = avio_tell(s->pb);
3397 uint8_t *buf, *read_buf[2];
3398 int read_buf_id = 0;
3400 AVIOContext *read_pb;
3402 moov_size = compute_moov_size(s);
3406 buf = av_malloc(moov_size * 2);
3408 return AVERROR(ENOMEM);
3410 read_buf[1] = buf + moov_size;
3412 /* Shift the data: the AVIO context of the output can only be used for
3413 * writing, so we re-open the same output, but for reading. It also avoids
3414 * a read/seek/write/seek back and forth. */
3416 ret = avio_open(&read_pb, s->filename, AVIO_FLAG_READ);
3418 av_log(s, AV_LOG_ERROR, "Unable to re-open %s output file for "
3419 "the second pass (faststart)\n", s->filename);
3423 /* mark the end of the shift to up to the last data we wrote, and get ready
3425 pos_end = avio_tell(s->pb);
3426 avio_seek(s->pb, mov->reserved_moov_pos + moov_size, SEEK_SET);
3428 /* start reading at where the new moov will be placed */
3429 avio_seek(read_pb, mov->reserved_moov_pos, SEEK_SET);
3430 pos = avio_tell(read_pb);
3432 #define READ_BLOCK do { \
3433 read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], moov_size); \
3437 /* shift data by chunk of at most moov_size */
3442 n = read_size[read_buf_id];
3445 avio_write(s->pb, read_buf[read_buf_id], n);
3447 } while (pos < pos_end);
3448 avio_close(read_pb);
3455 static int mov_write_trailer(AVFormatContext *s)
3457 MOVMuxContext *mov = s->priv_data;
3458 AVIOContext *pb = s->pb;
3463 // If there were no chapters when the header was written, but there
3464 // are chapters now, write them in the trailer. This only works
3465 // when we are not doing fragments.
3466 if (!mov->chapter_track && !(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
3467 if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters) {
3468 mov->chapter_track = mov->nb_streams++;
3469 if ((res = mov_create_chapter_track(s, mov->chapter_track)) < 0)
3474 if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
3475 moov_pos = avio_tell(pb);
3477 /* Write size of mdat tag */
3478 if (mov->mdat_size + 8 <= UINT32_MAX) {
3479 avio_seek(pb, mov->mdat_pos, SEEK_SET);
3480 avio_wb32(pb, mov->mdat_size + 8);
3482 /* overwrite 'wide' placeholder atom */
3483 avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
3484 /* special value: real atom size will be 64 bit value after
3487 ffio_wfourcc(pb, "mdat");
3488 avio_wb64(pb, mov->mdat_size + 16);
3490 avio_seek(pb, moov_pos, SEEK_SET);
3492 if (mov->flags & FF_MOV_FLAG_FASTSTART) {
3493 av_log(s, AV_LOG_INFO, "Starting second pass: moving the moov atom to the beginning of the file\n");
3494 res = shift_data(s);
3496 avio_seek(s->pb, mov->reserved_moov_pos, SEEK_SET);
3497 mov_write_moov_tag(pb, mov, s);
3500 mov_write_moov_tag(pb, mov, s);
3503 mov_flush_fragment(s);
3504 mov_write_mfra_tag(pb, mov);
3507 for (i = 0; i < mov->nb_streams; i++) {
3508 if (mov->flags & FF_MOV_FLAG_FRAGMENT &&
3509 mov->tracks[i].vc1_info.struct_offset && s->pb->seekable) {
3510 int64_t off = avio_tell(pb);
3512 if (mov_write_dvc1_structs(&mov->tracks[i], buf) >= 0) {
3513 avio_seek(pb, mov->tracks[i].vc1_info.struct_offset, SEEK_SET);
3514 avio_write(pb, buf, 7);
3515 avio_seek(pb, off, SEEK_SET);
3526 #if CONFIG_MOV_MUXER
3528 AVOutputFormat ff_mov_muxer = {
3530 .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"),
3531 .extensions = "mov",
3532 .priv_data_size = sizeof(MOVMuxContext),
3533 .audio_codec = AV_CODEC_ID_AAC,
3534 .video_codec = CONFIG_LIBX264_ENCODER ?
3535 AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
3536 .write_header = mov_write_header,
3537 .write_packet = mov_write_packet,
3538 .write_trailer = mov_write_trailer,
3539 .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
3540 .codec_tag = (const AVCodecTag* const []){
3541 ff_codec_movvideo_tags, ff_codec_movaudio_tags, 0
3543 .priv_class = &mov_muxer_class,
3546 #if CONFIG_TGP_MUXER
3548 AVOutputFormat ff_tgp_muxer = {
3550 .long_name = NULL_IF_CONFIG_SMALL("3GP (3GPP file format)"),
3551 .extensions = "3gp",
3552 .priv_data_size = sizeof(MOVMuxContext),
3553 .audio_codec = AV_CODEC_ID_AMR_NB,
3554 .video_codec = AV_CODEC_ID_H263,
3555 .write_header = mov_write_header,
3556 .write_packet = mov_write_packet,
3557 .write_trailer = mov_write_trailer,
3558 .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
3559 .codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
3560 .priv_class = &tgp_muxer_class,
3563 #if CONFIG_MP4_MUXER
3565 AVOutputFormat ff_mp4_muxer = {
3567 .long_name = NULL_IF_CONFIG_SMALL("MP4 (MPEG-4 Part 14)"),
3568 .mime_type = "application/mp4",
3569 .extensions = "mp4",
3570 .priv_data_size = sizeof(MOVMuxContext),
3571 .audio_codec = AV_CODEC_ID_AAC,
3572 .video_codec = CONFIG_LIBX264_ENCODER ?
3573 AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
3574 .write_header = mov_write_header,
3575 .write_packet = mov_write_packet,
3576 .write_trailer = mov_write_trailer,
3577 .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
3578 .codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
3579 .priv_class = &mp4_muxer_class,
3582 #if CONFIG_PSP_MUXER
3584 AVOutputFormat ff_psp_muxer = {
3586 .long_name = NULL_IF_CONFIG_SMALL("PSP MP4 (MPEG-4 Part 14)"),
3587 .extensions = "mp4,psp",
3588 .priv_data_size = sizeof(MOVMuxContext),
3589 .audio_codec = AV_CODEC_ID_AAC,
3590 .video_codec = CONFIG_LIBX264_ENCODER ?
3591 AV_CODEC_ID_H264 : AV_CODEC_ID_MPEG4,
3592 .write_header = mov_write_header,
3593 .write_packet = mov_write_packet,
3594 .write_trailer = mov_write_trailer,
3595 .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
3596 .codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
3597 .priv_class = &psp_muxer_class,
3600 #if CONFIG_TG2_MUXER
3602 AVOutputFormat ff_tg2_muxer = {
3604 .long_name = NULL_IF_CONFIG_SMALL("3GP2 (3GPP2 file format)"),
3605 .extensions = "3g2",
3606 .priv_data_size = sizeof(MOVMuxContext),
3607 .audio_codec = AV_CODEC_ID_AMR_NB,
3608 .video_codec = AV_CODEC_ID_H263,
3609 .write_header = mov_write_header,
3610 .write_packet = mov_write_packet,
3611 .write_trailer = mov_write_trailer,
3612 .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
3613 .codec_tag = (const AVCodecTag* const []){ codec_3gp_tags, 0 },
3614 .priv_class = &tg2_muxer_class,
3617 #if CONFIG_IPOD_MUXER
3619 AVOutputFormat ff_ipod_muxer = {
3621 .long_name = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 (MPEG-4 Part 14)"),
3622 .mime_type = "application/mp4",
3623 .extensions = "m4v,m4a",
3624 .priv_data_size = sizeof(MOVMuxContext),
3625 .audio_codec = AV_CODEC_ID_AAC,
3626 .video_codec = AV_CODEC_ID_H264,
3627 .write_header = mov_write_header,
3628 .write_packet = mov_write_packet,
3629 .write_trailer = mov_write_trailer,
3630 .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
3631 .codec_tag = (const AVCodecTag* const []){ codec_ipod_tags, 0 },
3632 .priv_class = &ipod_muxer_class,
3635 #if CONFIG_ISMV_MUXER
3637 AVOutputFormat ff_ismv_muxer = {
3639 .long_name = NULL_IF_CONFIG_SMALL("ISMV/ISMA (Smooth Streaming)"),
3640 .mime_type = "application/mp4",
3641 .extensions = "ismv,isma",
3642 .priv_data_size = sizeof(MOVMuxContext),
3643 .audio_codec = AV_CODEC_ID_AAC,
3644 .video_codec = AV_CODEC_ID_H264,
3645 .write_header = mov_write_header,
3646 .write_packet = mov_write_packet,
3647 .write_trailer = mov_write_trailer,
3648 .flags = AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_TS_NEGATIVE,
3649 .codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
3650 .priv_class = &ismv_muxer_class,