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"
34 #include "libavutil/avstring.h"
35 #include "libavutil/intfloat_readwrite.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/dict.h"
44 static const AVOption options[] = {
45 { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
46 { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.dbl = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
47 FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
51 #define MOV_CLASS(flavor)\
52 static const AVClass flavor ## _muxer_class = {\
53 .class_name = #flavor " muxer",\
54 .item_name = av_default_item_name,\
56 .version = LIBAVUTIL_VERSION_INT,\
59 //FIXME support 64 bit variant with wide placeholders
60 static int64_t updateSize(AVIOContext *pb, int64_t pos)
62 int64_t curpos = avio_tell(pb);
63 avio_seek(pb, pos, SEEK_SET);
64 avio_wb32(pb, curpos - pos); /* rewrite size */
65 avio_seek(pb, curpos, SEEK_SET);
70 /* Chunk offset atom */
71 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
74 int mode64 = 0; // use 32 bit size variant if possible
75 int64_t pos = avio_tell(pb);
76 avio_wb32(pb, 0); /* size */
77 if (pos > UINT32_MAX) {
79 ffio_wfourcc(pb, "co64");
81 ffio_wfourcc(pb, "stco");
82 avio_wb32(pb, 0); /* version & flags */
83 avio_wb32(pb, track->entry); /* entry count */
84 for (i=0; i<track->entry; i++) {
86 avio_wb64(pb, track->cluster[i].pos);
88 avio_wb32(pb, track->cluster[i].pos);
90 return updateSize(pb, pos);
93 /* Sample size atom */
94 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
97 int i, j, entries = 0, tst = -1, oldtst = -1;
99 int64_t pos = avio_tell(pb);
100 avio_wb32(pb, 0); /* size */
101 ffio_wfourcc(pb, "stsz");
102 avio_wb32(pb, 0); /* version & flags */
104 for (i=0; i<track->entry; i++) {
105 tst = track->cluster[i].size/track->cluster[i].entries;
106 if(oldtst != -1 && tst != oldtst) {
110 entries += track->cluster[i].entries;
113 int sSize = track->cluster[0].size/track->cluster[0].entries;
114 sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
115 avio_wb32(pb, sSize); // sample size
116 avio_wb32(pb, entries); // sample count
119 avio_wb32(pb, 0); // sample size
120 avio_wb32(pb, entries); // sample count
121 for (i=0; i<track->entry; i++) {
122 for (j=0; j<track->cluster[i].entries; j++) {
123 avio_wb32(pb, track->cluster[i].size /
124 track->cluster[i].entries);
128 return updateSize(pb, pos);
131 /* Sample to chunk atom */
132 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
134 int index = 0, oldval = -1, i;
135 int64_t entryPos, curpos;
137 int64_t pos = avio_tell(pb);
138 avio_wb32(pb, 0); /* size */
139 ffio_wfourcc(pb, "stsc");
140 avio_wb32(pb, 0); // version & flags
141 entryPos = avio_tell(pb);
142 avio_wb32(pb, track->entry); // entry count
143 for (i=0; i<track->entry; i++) {
144 if(oldval != track->cluster[i].samplesInChunk)
146 avio_wb32(pb, i+1); // first chunk
147 avio_wb32(pb, track->cluster[i].samplesInChunk); // samples per chunk
148 avio_wb32(pb, 0x1); // sample description index
149 oldval = track->cluster[i].samplesInChunk;
153 curpos = avio_tell(pb);
154 avio_seek(pb, entryPos, SEEK_SET);
155 avio_wb32(pb, index); // rewrite size
156 avio_seek(pb, curpos, SEEK_SET);
158 return updateSize(pb, pos);
161 /* Sync sample atom */
162 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
164 int64_t curpos, entryPos;
166 int64_t pos = avio_tell(pb);
167 avio_wb32(pb, 0); // size
168 ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
169 avio_wb32(pb, 0); // version & flags
170 entryPos = avio_tell(pb);
171 avio_wb32(pb, track->entry); // entry count
172 for (i=0; i<track->entry; i++) {
173 if (track->cluster[i].flags & flag) {
178 curpos = avio_tell(pb);
179 avio_seek(pb, entryPos, SEEK_SET);
180 avio_wb32(pb, index); // rewrite size
181 avio_seek(pb, curpos, SEEK_SET);
182 return updateSize(pb, pos);
185 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
187 avio_wb32(pb, 0x11); /* size */
188 if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
189 else ffio_wfourcc(pb, "damr");
190 ffio_wfourcc(pb, "FFMP");
191 avio_w8(pb, 0); /* decoder version */
193 avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
194 avio_w8(pb, 0x00); /* Mode change period (no restriction) */
195 avio_w8(pb, 0x01); /* Frames per sample */
199 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
204 int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
206 if (track->vosLen < 7)
210 ffio_wfourcc(pb, "dac3");
212 init_get_bits(&gbc, track->vosData+4, (track->vosLen-4) * 8);
213 fscod = get_bits(&gbc, 2);
214 frmsizecod = get_bits(&gbc, 6);
215 bsid = get_bits(&gbc, 5);
216 bsmod = get_bits(&gbc, 3);
217 acmod = get_bits(&gbc, 3);
219 skip_bits(&gbc, 2); // dsurmod
221 if ((acmod & 1) && acmod != 1)
222 skip_bits(&gbc, 2); // cmixlev
224 skip_bits(&gbc, 2); // surmixlev
226 lfeon = get_bits1(&gbc);
228 init_put_bits(&pbc, buf, sizeof(buf));
229 put_bits(&pbc, 2, fscod);
230 put_bits(&pbc, 5, bsid);
231 put_bits(&pbc, 3, bsmod);
232 put_bits(&pbc, 3, acmod);
233 put_bits(&pbc, 1, lfeon);
234 put_bits(&pbc, 5, frmsizecod>>1); // bit_rate_code
235 put_bits(&pbc, 5, 0); // reserved
237 flush_put_bits(&pbc);
238 avio_write(pb, buf, sizeof(buf));
244 * This function writes extradata "as is".
245 * Extradata must be formated like a valid atom (with size and tag)
247 static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
249 avio_write(pb, track->enc->extradata, track->enc->extradata_size);
250 return track->enc->extradata_size;
253 static int mov_write_enda_tag(AVIOContext *pb)
256 ffio_wfourcc(pb, "enda");
257 avio_wb16(pb, 1); /* little endian */
261 static void putDescr(AVIOContext *pb, int tag, unsigned int size)
266 avio_w8(pb, (size>>(7*i)) | 0x80);
267 avio_w8(pb, size & 0x7F);
270 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
272 int64_t pos = avio_tell(pb);
273 int decoderSpecificInfoLen = track->vosLen ? 5+track->vosLen : 0;
275 avio_wb32(pb, 0); // size
276 ffio_wfourcc(pb, "esds");
277 avio_wb32(pb, 0); // Version
280 putDescr(pb, 0x03, 3 + 5+13 + decoderSpecificInfoLen + 5+1);
281 avio_wb16(pb, track->trackID);
282 avio_w8(pb, 0x00); // flags (= no flags)
284 // DecoderConfig descriptor
285 putDescr(pb, 0x04, 13 + decoderSpecificInfoLen);
287 // Object type indication
288 if ((track->enc->codec_id == CODEC_ID_MP2 ||
289 track->enc->codec_id == CODEC_ID_MP3) &&
290 track->enc->sample_rate > 24000)
291 avio_w8(pb, 0x6B); // 11172-3
293 avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id));
295 // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
296 // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
297 if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
298 avio_w8(pb, 0x15); // flags (= Audiostream)
300 avio_w8(pb, 0x11); // flags (= Visualstream)
302 avio_w8(pb, track->enc->rc_buffer_size>>(3+16)); // Buffersize DB (24 bits)
303 avio_wb16(pb, (track->enc->rc_buffer_size>>3)&0xFFFF); // Buffersize DB
305 avio_wb32(pb, FFMAX(track->enc->bit_rate, track->enc->rc_max_rate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
306 if(track->enc->rc_max_rate != track->enc->rc_min_rate || track->enc->rc_min_rate==0)
307 avio_wb32(pb, 0); // vbr
309 avio_wb32(pb, track->enc->rc_max_rate); // avg bitrate
312 // DecoderSpecific info descriptor
313 putDescr(pb, 0x05, track->vosLen);
314 avio_write(pb, track->vosData, track->vosLen);
318 putDescr(pb, 0x06, 1);
320 return updateSize(pb, pos);
323 static int mov_pcm_le_gt16(enum CodecID codec_id)
325 return codec_id == CODEC_ID_PCM_S24LE ||
326 codec_id == CODEC_ID_PCM_S32LE ||
327 codec_id == CODEC_ID_PCM_F32LE ||
328 codec_id == CODEC_ID_PCM_F64LE;
331 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
333 int64_t pos = avio_tell(pb);
335 avio_wl32(pb, track->tag); // store it byteswapped
336 track->enc->codec_tag = av_bswap16(track->tag >> 16);
337 ff_put_wav_header(pb, track->enc);
338 return updateSize(pb, pos);
341 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
343 int64_t pos = avio_tell(pb);
345 avio_wb32(pb, 0); /* size */
346 ffio_wfourcc(pb, "wave");
348 avio_wb32(pb, 12); /* size */
349 ffio_wfourcc(pb, "frma");
350 avio_wl32(pb, track->tag);
352 if (track->enc->codec_id == CODEC_ID_AAC) {
353 /* useless atom needed by mplayer, ipod, not needed by quicktime */
354 avio_wb32(pb, 12); /* size */
355 ffio_wfourcc(pb, "mp4a");
357 mov_write_esds_tag(pb, track);
358 } else if (mov_pcm_le_gt16(track->enc->codec_id)) {
359 mov_write_enda_tag(pb);
360 } else if (track->enc->codec_id == CODEC_ID_AMR_NB) {
361 mov_write_amr_tag(pb, track);
362 } else if (track->enc->codec_id == CODEC_ID_AC3) {
363 mov_write_ac3_tag(pb, track);
364 } else if (track->enc->codec_id == CODEC_ID_ALAC) {
365 mov_write_extradata_tag(pb, track);
366 } else if (track->enc->codec_id == CODEC_ID_ADPCM_MS ||
367 track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
368 mov_write_ms_tag(pb, track);
371 avio_wb32(pb, 8); /* size */
372 avio_wb32(pb, 0); /* null tag */
374 return updateSize(pb, pos);
377 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
379 avio_wb32(pb, track->vosLen+8);
380 ffio_wfourcc(pb, "glbl");
381 avio_write(pb, track->vosData, track->vosLen);
382 return 8+track->vosLen;
386 * Compute flags for 'lpcm' tag.
387 * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
389 static int mov_get_lpcm_flags(enum CodecID codec_id)
392 case CODEC_ID_PCM_F32BE:
393 case CODEC_ID_PCM_F64BE:
395 case CODEC_ID_PCM_F32LE:
396 case CODEC_ID_PCM_F64LE:
398 case CODEC_ID_PCM_U8:
400 case CODEC_ID_PCM_S16BE:
401 case CODEC_ID_PCM_S24BE:
402 case CODEC_ID_PCM_S32BE:
404 case CODEC_ID_PCM_S8:
405 case CODEC_ID_PCM_S16LE:
406 case CODEC_ID_PCM_S24LE:
407 case CODEC_ID_PCM_S32LE:
414 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
416 int64_t pos = avio_tell(pb);
418 uint32_t tag = track->tag;
420 if (track->mode == MODE_MOV) {
421 if (track->timescale > UINT16_MAX) {
422 if (mov_get_lpcm_flags(track->enc->codec_id))
423 tag = AV_RL32("lpcm");
425 } else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id) ||
426 track->enc->codec_id == CODEC_ID_ADPCM_MS ||
427 track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
432 avio_wb32(pb, 0); /* size */
433 avio_wl32(pb, tag); // store it byteswapped
434 avio_wb32(pb, 0); /* Reserved */
435 avio_wb16(pb, 0); /* Reserved */
436 avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
438 /* SoundDescription */
439 avio_wb16(pb, version); /* Version */
440 avio_wb16(pb, 0); /* Revision level */
441 avio_wb32(pb, 0); /* Reserved */
446 avio_wb16(pb, 0xfffe);
448 avio_wb32(pb, 0x00010000);
450 avio_wb64(pb, av_dbl2int(track->timescale));
451 avio_wb32(pb, track->enc->channels);
452 avio_wb32(pb, 0x7F000000);
453 avio_wb32(pb, av_get_bits_per_sample(track->enc->codec_id));
454 avio_wb32(pb, mov_get_lpcm_flags(track->enc->codec_id));
455 avio_wb32(pb, track->sampleSize);
456 avio_wb32(pb, track->enc->frame_size);
458 if (track->mode == MODE_MOV) {
459 avio_wb16(pb, track->enc->channels);
460 if (track->enc->codec_id == CODEC_ID_PCM_U8 ||
461 track->enc->codec_id == CODEC_ID_PCM_S8)
462 avio_wb16(pb, 8); /* bits per sample */
465 avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
466 } else { /* reserved for mp4/3gp */
472 avio_wb16(pb, 0); /* packet size (= 0) */
473 avio_wb16(pb, track->timescale); /* Time scale */
474 avio_wb16(pb, 0); /* Reserved */
477 if(version == 1) { /* SoundDescription V1 extended info */
478 avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
479 avio_wb32(pb, track->sampleSize / track->enc->channels); /* Bytes per packet */
480 avio_wb32(pb, track->sampleSize); /* Bytes per frame */
481 avio_wb32(pb, 2); /* Bytes per sample */
484 if(track->mode == MODE_MOV &&
485 (track->enc->codec_id == CODEC_ID_AAC ||
486 track->enc->codec_id == CODEC_ID_AC3 ||
487 track->enc->codec_id == CODEC_ID_AMR_NB ||
488 track->enc->codec_id == CODEC_ID_ALAC ||
489 track->enc->codec_id == CODEC_ID_ADPCM_MS ||
490 track->enc->codec_id == CODEC_ID_ADPCM_IMA_WAV ||
491 mov_pcm_le_gt16(track->enc->codec_id)))
492 mov_write_wave_tag(pb, track);
493 else if(track->tag == MKTAG('m','p','4','a'))
494 mov_write_esds_tag(pb, track);
495 else if(track->enc->codec_id == CODEC_ID_AMR_NB)
496 mov_write_amr_tag(pb, track);
497 else if(track->enc->codec_id == CODEC_ID_AC3)
498 mov_write_ac3_tag(pb, track);
499 else if(track->enc->codec_id == CODEC_ID_ALAC)
500 mov_write_extradata_tag(pb, track);
501 else if(track->vosLen > 0)
502 mov_write_glbl_tag(pb, track);
504 return updateSize(pb, pos);
507 static int mov_write_d263_tag(AVIOContext *pb)
509 avio_wb32(pb, 0xf); /* size */
510 ffio_wfourcc(pb, "d263");
511 ffio_wfourcc(pb, "FFMP");
512 avio_w8(pb, 0); /* decoder version */
513 /* FIXME use AVCodecContext level/profile, when encoder will set values */
514 avio_w8(pb, 0xa); /* level */
515 avio_w8(pb, 0); /* profile */
519 /* TODO: No idea about these values */
520 static int mov_write_svq3_tag(AVIOContext *pb)
523 ffio_wfourcc(pb, "SMI ");
524 ffio_wfourcc(pb, "SEQH");
526 avio_wb32(pb, 0xe2c0211d);
527 avio_wb32(pb, 0xc0000000);
532 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
534 int64_t pos = avio_tell(pb);
537 ffio_wfourcc(pb, "avcC");
538 ff_isom_write_avcc(pb, track->vosData, track->vosLen);
539 return updateSize(pb, pos);
542 /* also used by all avid codecs (dv, imx, meridien) and their variants */
543 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
546 avio_wb32(pb, 24); /* size */
547 ffio_wfourcc(pb, "ACLR");
548 ffio_wfourcc(pb, "ACLR");
549 ffio_wfourcc(pb, "0001");
550 avio_wb32(pb, 2); /* yuv range: full 1 / normal 2 */
551 avio_wb32(pb, 0); /* unknown */
553 avio_wb32(pb, 24); /* size */
554 ffio_wfourcc(pb, "APRG");
555 ffio_wfourcc(pb, "APRG");
556 ffio_wfourcc(pb, "0001");
557 avio_wb32(pb, 1); /* unknown */
558 avio_wb32(pb, 0); /* unknown */
560 avio_wb32(pb, 120); /* size */
561 ffio_wfourcc(pb, "ARES");
562 ffio_wfourcc(pb, "ARES");
563 ffio_wfourcc(pb, "0001");
564 avio_wb32(pb, AV_RB32(track->vosData + 0x28)); /* dnxhd cid, some id ? */
565 avio_wb32(pb, track->enc->width);
566 /* values below are based on samples created with quicktime and avid codecs */
567 if (track->vosData[5] & 2) { // interlaced
568 avio_wb32(pb, track->enc->height/2);
569 avio_wb32(pb, 2); /* unknown */
570 avio_wb32(pb, 0); /* unknown */
571 avio_wb32(pb, 4); /* unknown */
573 avio_wb32(pb, track->enc->height);
574 avio_wb32(pb, 1); /* unknown */
575 avio_wb32(pb, 0); /* unknown */
576 if (track->enc->height == 1080)
577 avio_wb32(pb, 5); /* unknown */
579 avio_wb32(pb, 6); /* unknown */
582 for (i = 0; i < 10; i++)
585 /* extra padding for stsd needed */
590 static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
592 int tag = track->enc->codec_tag;
594 if (!ff_codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
597 if (track->enc->codec_id == CODEC_ID_H264) tag = MKTAG('a','v','c','1');
598 else if (track->enc->codec_id == CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
599 else if (track->enc->codec_id == CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
600 else if (track->enc->codec_id == CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
601 else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
602 else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
607 static const AVCodecTag codec_ipod_tags[] = {
608 { CODEC_ID_H264, MKTAG('a','v','c','1') },
609 { CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
610 { CODEC_ID_AAC, MKTAG('m','p','4','a') },
611 { CODEC_ID_ALAC, MKTAG('a','l','a','c') },
612 { CODEC_ID_AC3, MKTAG('a','c','-','3') },
613 { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
614 { CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
615 { CODEC_ID_NONE, 0 },
618 static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
620 int tag = track->enc->codec_tag;
622 // keep original tag for subs, ipod supports both formats
623 if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
624 (tag == MKTAG('t','x','3','g') ||
625 tag == MKTAG('t','e','x','t'))))
626 tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
628 if (!av_match_ext(s->filename, "m4a") && !av_match_ext(s->filename, "m4v"))
629 av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
630 "Quicktime/Ipod might not play the file\n");
635 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
639 if (track->enc->width == 720) /* SD */
640 if (track->enc->height == 480) /* NTSC */
641 if (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
642 else tag = MKTAG('d','v','c',' ');
643 else if (track->enc->pix_fmt == PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
644 else if (track->enc->pix_fmt == PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
645 else tag = MKTAG('d','v','p','p');
646 else if (track->enc->height == 720) /* HD 720 line */
647 if (track->enc->time_base.den == 50) tag = MKTAG('d','v','h','q');
648 else tag = MKTAG('d','v','h','p');
649 else if (track->enc->height == 1080) /* HD 1080 line */
650 if (track->enc->time_base.den == 25) tag = MKTAG('d','v','h','5');
651 else tag = MKTAG('d','v','h','6');
653 av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
660 static const struct {
661 enum PixelFormat pix_fmt;
664 } mov_pix_fmt_tags[] = {
665 { PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
666 { PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
667 { PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
668 { PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
669 { PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
670 { PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
671 { PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
672 { PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
673 { PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
674 { PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
675 { PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
676 { PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
677 { PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
678 { PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
681 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
683 int tag = track->enc->codec_tag;
686 for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
687 if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
688 tag = mov_pix_fmt_tags[i].tag;
689 track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
697 static int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
699 int tag = track->enc->codec_tag;
701 if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
702 (track->enc->codec_id == CODEC_ID_DVVIDEO ||
703 track->enc->codec_id == CODEC_ID_RAWVIDEO ||
704 track->enc->codec_id == CODEC_ID_H263 ||
705 av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
706 if (track->enc->codec_id == CODEC_ID_DVVIDEO)
707 tag = mov_get_dv_codec_tag(s, track);
708 else if (track->enc->codec_id == CODEC_ID_RAWVIDEO)
709 tag = mov_get_rawvideo_codec_tag(s, track);
710 else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
711 tag = ff_codec_get_tag(codec_movvideo_tags, track->enc->codec_id);
712 if (!tag) { // if no mac fcc found, try with Microsoft tags
713 tag = ff_codec_get_tag(ff_codec_bmp_tags, track->enc->codec_id);
715 av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
716 "the file may be unplayable!\n");
718 } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
719 tag = ff_codec_get_tag(codec_movaudio_tags, track->enc->codec_id);
720 if (!tag) { // if no mac fcc found, try with Microsoft tags
721 int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
723 tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
724 av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
725 "the file may be unplayable!\n");
728 } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
729 tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->enc->codec_id);
735 static const AVCodecTag codec_3gp_tags[] = {
736 { CODEC_ID_H263, MKTAG('s','2','6','3') },
737 { CODEC_ID_H264, MKTAG('a','v','c','1') },
738 { CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
739 { CODEC_ID_AAC, MKTAG('m','p','4','a') },
740 { CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
741 { CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
742 { CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
743 { CODEC_ID_NONE, 0 },
746 static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
748 int tag = track->enc->codec_tag;
750 if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
751 tag = mp4_get_codec_tag(s, track);
752 else if (track->mode == MODE_IPOD)
753 tag = ipod_get_codec_tag(s, track);
754 else if (track->mode & MODE_3GP)
755 tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
757 tag = mov_get_codec_tag(s, track);
763 * Needed to make file play in iPods running newest firmware
764 * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
766 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
769 ffio_wfourcc(pb, "uuid");
770 avio_wb32(pb, 0x6b6840f2);
771 avio_wb32(pb, 0x5f244fc5);
772 avio_wb32(pb, 0xba39a51b);
773 avio_wb32(pb, 0xcf0323f3);
778 static int mov_write_subtitle_tag(AVIOContext *pb, MOVTrack *track)
780 int64_t pos = avio_tell(pb);
781 avio_wb32(pb, 0); /* size */
782 avio_wl32(pb, track->tag); // store it byteswapped
783 avio_wb32(pb, 0); /* Reserved */
784 avio_wb16(pb, 0); /* Reserved */
785 avio_wb16(pb, 1); /* Data-reference index */
787 if (track->enc->extradata_size)
788 avio_write(pb, track->enc->extradata, track->enc->extradata_size);
790 return updateSize(pb, pos);
793 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
796 av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
797 track->enc->sample_aspect_ratio.den, INT_MAX);
800 ffio_wfourcc(pb, "pasp");
801 avio_wb32(pb, sar.num);
802 avio_wb32(pb, sar.den);
806 static int mov_write_video_tag(AVIOContext *pb, MOVTrack *track)
808 int64_t pos = avio_tell(pb);
809 char compressor_name[32];
811 avio_wb32(pb, 0); /* size */
812 avio_wl32(pb, track->tag); // store it byteswapped
813 avio_wb32(pb, 0); /* Reserved */
814 avio_wb16(pb, 0); /* Reserved */
815 avio_wb16(pb, 1); /* Data-reference index */
817 avio_wb16(pb, 0); /* Codec stream version */
818 avio_wb16(pb, 0); /* Codec stream revision (=0) */
819 if (track->mode == MODE_MOV) {
820 ffio_wfourcc(pb, "FFMP"); /* Vendor */
821 if(track->enc->codec_id == CODEC_ID_RAWVIDEO) {
822 avio_wb32(pb, 0); /* Temporal Quality */
823 avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
825 avio_wb32(pb, 0x200); /* Temporal Quality = normal */
826 avio_wb32(pb, 0x200); /* Spatial Quality = normal */
829 avio_wb32(pb, 0); /* Reserved */
830 avio_wb32(pb, 0); /* Reserved */
831 avio_wb32(pb, 0); /* Reserved */
833 avio_wb16(pb, track->enc->width); /* Video width */
834 avio_wb16(pb, track->height); /* Video height */
835 avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
836 avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
837 avio_wb32(pb, 0); /* Data size (= 0) */
838 avio_wb16(pb, 1); /* Frame count (= 1) */
840 memset(compressor_name,0,32);
841 /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
842 if (track->mode == MODE_MOV && track->enc->codec && track->enc->codec->name)
843 av_strlcpy(compressor_name,track->enc->codec->name,32);
844 avio_w8(pb, strlen(compressor_name));
845 avio_write(pb, compressor_name, 31);
847 if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
848 avio_wb16(pb, track->enc->bits_per_coded_sample);
850 avio_wb16(pb, 0x18); /* Reserved */
851 avio_wb16(pb, 0xffff); /* Reserved */
852 if(track->tag == MKTAG('m','p','4','v'))
853 mov_write_esds_tag(pb, track);
854 else if(track->enc->codec_id == CODEC_ID_H263)
855 mov_write_d263_tag(pb);
856 else if(track->enc->codec_id == CODEC_ID_SVQ3)
857 mov_write_svq3_tag(pb);
858 else if(track->enc->codec_id == CODEC_ID_DNXHD)
859 mov_write_avid_tag(pb, track);
860 else if(track->enc->codec_id == CODEC_ID_H264) {
861 mov_write_avcc_tag(pb, track);
862 if(track->mode == MODE_IPOD)
863 mov_write_uuid_tag_ipod(pb);
864 } else if(track->vosLen > 0)
865 mov_write_glbl_tag(pb, track);
867 if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
868 track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
869 mov_write_pasp_tag(pb, track);
872 return updateSize(pb, pos);
875 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
877 int64_t pos = avio_tell(pb);
878 avio_wb32(pb, 0); /* size */
879 ffio_wfourcc(pb, "rtp ");
880 avio_wb32(pb, 0); /* Reserved */
881 avio_wb16(pb, 0); /* Reserved */
882 avio_wb16(pb, 1); /* Data-reference index */
884 avio_wb16(pb, 1); /* Hint track version */
885 avio_wb16(pb, 1); /* Highest compatible version */
886 avio_wb32(pb, track->max_packet_size); /* Max packet size */
888 avio_wb32(pb, 12); /* size */
889 ffio_wfourcc(pb, "tims");
890 avio_wb32(pb, track->timescale);
892 return updateSize(pb, pos);
895 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
897 int64_t pos = avio_tell(pb);
898 avio_wb32(pb, 0); /* size */
899 ffio_wfourcc(pb, "stsd");
900 avio_wb32(pb, 0); /* version & flags */
901 avio_wb32(pb, 1); /* entry count */
902 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
903 mov_write_video_tag(pb, track);
904 else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
905 mov_write_audio_tag(pb, track);
906 else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
907 mov_write_subtitle_tag(pb, track);
908 else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
909 mov_write_rtp_tag(pb, track);
910 return updateSize(pb, pos);
913 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
915 MOVStts *ctts_entries;
916 uint32_t entries = 0;
920 ctts_entries = av_malloc((track->entry + 1) * sizeof(*ctts_entries)); /* worst case */
921 ctts_entries[0].count = 1;
922 ctts_entries[0].duration = track->cluster[0].cts;
923 for (i=1; i<track->entry; i++) {
924 if (track->cluster[i].cts == ctts_entries[entries].duration) {
925 ctts_entries[entries].count++; /* compress */
928 ctts_entries[entries].duration = track->cluster[i].cts;
929 ctts_entries[entries].count = 1;
932 entries++; /* last one */
933 atom_size = 16 + (entries * 8);
934 avio_wb32(pb, atom_size); /* size */
935 ffio_wfourcc(pb, "ctts");
936 avio_wb32(pb, 0); /* version & flags */
937 avio_wb32(pb, entries); /* entry count */
938 for (i=0; i<entries; i++) {
939 avio_wb32(pb, ctts_entries[i].count);
940 avio_wb32(pb, ctts_entries[i].duration);
942 av_free(ctts_entries);
946 /* Time to sample atom */
947 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
949 MOVStts *stts_entries;
950 uint32_t entries = -1;
954 if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
955 stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
956 stts_entries[0].count = track->sampleCount;
957 stts_entries[0].duration = 1;
960 stts_entries = av_malloc(track->entry * sizeof(*stts_entries)); /* worst case */
961 for (i=0; i<track->entry; i++) {
962 int64_t duration = i + 1 == track->entry ?
963 track->trackDuration - track->cluster[i].dts + track->cluster[0].dts : /* readjusting */
964 track->cluster[i+1].dts - track->cluster[i].dts;
965 if (i && duration == stts_entries[entries].duration) {
966 stts_entries[entries].count++; /* compress */
969 stts_entries[entries].duration = duration;
970 stts_entries[entries].count = 1;
973 entries++; /* last one */
975 atom_size = 16 + (entries * 8);
976 avio_wb32(pb, atom_size); /* size */
977 ffio_wfourcc(pb, "stts");
978 avio_wb32(pb, 0); /* version & flags */
979 avio_wb32(pb, entries); /* entry count */
980 for (i=0; i<entries; i++) {
981 avio_wb32(pb, stts_entries[i].count);
982 avio_wb32(pb, stts_entries[i].duration);
984 av_free(stts_entries);
988 static int mov_write_dref_tag(AVIOContext *pb)
990 avio_wb32(pb, 28); /* size */
991 ffio_wfourcc(pb, "dref");
992 avio_wb32(pb, 0); /* version & flags */
993 avio_wb32(pb, 1); /* entry count */
995 avio_wb32(pb, 0xc); /* size */
996 ffio_wfourcc(pb, "url ");
997 avio_wb32(pb, 1); /* version & flags */
1002 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
1004 int64_t pos = avio_tell(pb);
1005 avio_wb32(pb, 0); /* size */
1006 ffio_wfourcc(pb, "stbl");
1007 mov_write_stsd_tag(pb, track);
1008 mov_write_stts_tag(pb, track);
1009 if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
1010 track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
1011 track->hasKeyframes && track->hasKeyframes < track->entry)
1012 mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
1013 if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
1014 mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
1015 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
1016 track->flags & MOV_TRACK_CTTS)
1017 mov_write_ctts_tag(pb, track);
1018 mov_write_stsc_tag(pb, track);
1019 mov_write_stsz_tag(pb, track);
1020 mov_write_stco_tag(pb, track);
1021 return updateSize(pb, pos);
1024 static int mov_write_dinf_tag(AVIOContext *pb)
1026 int64_t pos = avio_tell(pb);
1027 avio_wb32(pb, 0); /* size */
1028 ffio_wfourcc(pb, "dinf");
1029 mov_write_dref_tag(pb);
1030 return updateSize(pb, pos);
1033 static int mov_write_nmhd_tag(AVIOContext *pb)
1036 ffio_wfourcc(pb, "nmhd");
1041 static int mov_write_gmhd_tag(AVIOContext *pb)
1043 avio_wb32(pb, 0x20); /* size */
1044 ffio_wfourcc(pb, "gmhd");
1045 avio_wb32(pb, 0x18); /* gmin size */
1046 ffio_wfourcc(pb, "gmin");/* generic media info */
1047 avio_wb32(pb, 0); /* version & flags */
1048 avio_wb16(pb, 0x40); /* graphics mode = */
1049 avio_wb16(pb, 0x8000); /* opColor (r?) */
1050 avio_wb16(pb, 0x8000); /* opColor (g?) */
1051 avio_wb16(pb, 0x8000); /* opColor (b?) */
1052 avio_wb16(pb, 0); /* balance */
1053 avio_wb16(pb, 0); /* reserved */
1057 static int mov_write_smhd_tag(AVIOContext *pb)
1059 avio_wb32(pb, 16); /* size */
1060 ffio_wfourcc(pb, "smhd");
1061 avio_wb32(pb, 0); /* version & flags */
1062 avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
1063 avio_wb16(pb, 0); /* reserved */
1067 static int mov_write_vmhd_tag(AVIOContext *pb)
1069 avio_wb32(pb, 0x14); /* size (always 0x14) */
1070 ffio_wfourcc(pb, "vmhd");
1071 avio_wb32(pb, 0x01); /* version & flags */
1072 avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
1076 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
1078 const char *hdlr, *descr = NULL, *hdlr_type = NULL;
1079 int64_t pos = avio_tell(pb);
1081 if (!track) { /* no media --> data handler */
1084 descr = "DataHandler";
1086 hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
1087 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1089 descr = "VideoHandler";
1090 } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1092 descr = "SoundHandler";
1093 } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1094 if (track->tag == MKTAG('t','x','3','g')) hdlr_type = "sbtl";
1095 else hdlr_type = "text";
1096 descr = "SubtitleHandler";
1097 } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
1099 descr = "HintHandler";
1103 avio_wb32(pb, 0); /* size */
1104 ffio_wfourcc(pb, "hdlr");
1105 avio_wb32(pb, 0); /* Version & flags */
1106 avio_write(pb, hdlr, 4); /* handler */
1107 ffio_wfourcc(pb, hdlr_type); /* handler type */
1108 avio_wb32(pb ,0); /* reserved */
1109 avio_wb32(pb ,0); /* reserved */
1110 avio_wb32(pb ,0); /* reserved */
1111 if (!track || track->mode == MODE_MOV)
1112 avio_w8(pb, strlen(descr)); /* pascal string */
1113 avio_write(pb, descr, strlen(descr)); /* handler description */
1114 if (track && track->mode != MODE_MOV)
1115 avio_w8(pb, 0); /* c string */
1116 return updateSize(pb, pos);
1119 static int mov_write_hmhd_tag(AVIOContext *pb)
1121 /* This atom must be present, but leaving the values at zero
1122 * seems harmless. */
1123 avio_wb32(pb, 28); /* size */
1124 ffio_wfourcc(pb, "hmhd");
1125 avio_wb32(pb, 0); /* version, flags */
1126 avio_wb16(pb, 0); /* maxPDUsize */
1127 avio_wb16(pb, 0); /* avgPDUsize */
1128 avio_wb32(pb, 0); /* maxbitrate */
1129 avio_wb32(pb, 0); /* avgbitrate */
1130 avio_wb32(pb, 0); /* reserved */
1134 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
1136 int64_t pos = avio_tell(pb);
1137 avio_wb32(pb, 0); /* size */
1138 ffio_wfourcc(pb, "minf");
1139 if(track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
1140 mov_write_vmhd_tag(pb);
1141 else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1142 mov_write_smhd_tag(pb);
1143 else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1144 if (track->tag == MKTAG('t','e','x','t')) mov_write_gmhd_tag(pb);
1145 else mov_write_nmhd_tag(pb);
1146 } else if (track->tag == MKTAG('r','t','p',' ')) {
1147 mov_write_hmhd_tag(pb);
1149 if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
1150 mov_write_hdlr_tag(pb, NULL);
1151 mov_write_dinf_tag(pb);
1152 mov_write_stbl_tag(pb, track);
1153 return updateSize(pb, pos);
1156 static int mov_write_mdhd_tag(AVIOContext *pb, MOVTrack *track)
1158 int version = track->trackDuration < INT32_MAX ? 0 : 1;
1160 (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
1161 ffio_wfourcc(pb, "mdhd");
1162 avio_w8(pb, version);
1163 avio_wb24(pb, 0); /* flags */
1165 avio_wb64(pb, track->time);
1166 avio_wb64(pb, track->time);
1168 avio_wb32(pb, track->time); /* creation time */
1169 avio_wb32(pb, track->time); /* modification time */
1171 avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
1172 (version == 1) ? avio_wb64(pb, track->trackDuration) : avio_wb32(pb, track->trackDuration); /* duration */
1173 avio_wb16(pb, track->language); /* language */
1174 avio_wb16(pb, 0); /* reserved (quality) */
1176 if(version!=0 && track->mode == MODE_MOV){
1177 av_log(NULL, AV_LOG_ERROR,
1178 "FATAL error, file duration too long for timebase, this file will not be\n"
1179 "playable with quicktime. Choose a different timebase or a different\n"
1180 "container format\n");
1186 static int mov_write_mdia_tag(AVIOContext *pb, MOVTrack *track)
1188 int64_t pos = avio_tell(pb);
1189 avio_wb32(pb, 0); /* size */
1190 ffio_wfourcc(pb, "mdia");
1191 mov_write_mdhd_tag(pb, track);
1192 mov_write_hdlr_tag(pb, track);
1193 mov_write_minf_tag(pb, track);
1194 return updateSize(pb, pos);
1197 static int mov_write_tkhd_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
1199 int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
1200 track->timescale, AV_ROUND_UP);
1201 int version = duration < INT32_MAX ? 0 : 1;
1203 (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
1204 ffio_wfourcc(pb, "tkhd");
1205 avio_w8(pb, version);
1206 avio_wb24(pb, 0xf); /* flags (track enabled) */
1208 avio_wb64(pb, track->time);
1209 avio_wb64(pb, track->time);
1211 avio_wb32(pb, track->time); /* creation time */
1212 avio_wb32(pb, track->time); /* modification time */
1214 avio_wb32(pb, track->trackID); /* track-id */
1215 avio_wb32(pb, 0); /* reserved */
1216 (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
1218 avio_wb32(pb, 0); /* reserved */
1219 avio_wb32(pb, 0); /* reserved */
1220 avio_wb16(pb, 0); /* layer */
1221 avio_wb16(pb, st ? st->codec->codec_type : 0); /* alternate group) */
1222 /* Volume, only for audio */
1223 if(track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1224 avio_wb16(pb, 0x0100);
1227 avio_wb16(pb, 0); /* reserved */
1229 /* Matrix structure */
1230 avio_wb32(pb, 0x00010000); /* reserved */
1231 avio_wb32(pb, 0x0); /* reserved */
1232 avio_wb32(pb, 0x0); /* reserved */
1233 avio_wb32(pb, 0x0); /* reserved */
1234 avio_wb32(pb, 0x00010000); /* reserved */
1235 avio_wb32(pb, 0x0); /* reserved */
1236 avio_wb32(pb, 0x0); /* reserved */
1237 avio_wb32(pb, 0x0); /* reserved */
1238 avio_wb32(pb, 0x40000000); /* reserved */
1240 /* Track width and height, for visual only */
1241 if(st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
1242 track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
1243 if(track->mode == MODE_MOV) {
1244 avio_wb32(pb, track->enc->width << 16);
1245 avio_wb32(pb, track->height << 16);
1247 double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
1248 if(!sample_aspect_ratio || track->height != track->enc->height)
1249 sample_aspect_ratio = 1;
1250 avio_wb32(pb, sample_aspect_ratio * track->enc->width*0x10000);
1251 avio_wb32(pb, track->height*0x10000);
1261 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
1263 int32_t width = av_rescale(track->enc->sample_aspect_ratio.num, track->enc->width,
1264 track->enc->sample_aspect_ratio.den);
1266 int64_t pos = avio_tell(pb);
1268 avio_wb32(pb, 0); /* size */
1269 ffio_wfourcc(pb, "tapt");
1272 ffio_wfourcc(pb, "clef");
1274 avio_wb32(pb, width << 16);
1275 avio_wb32(pb, track->enc->height << 16);
1278 ffio_wfourcc(pb, "enof");
1280 avio_wb32(pb, track->enc->width << 16);
1281 avio_wb32(pb, track->enc->height << 16);
1283 return updateSize(pb, pos);
1286 // This box seems important for the psp playback ... without it the movie seems to hang
1287 static int mov_write_edts_tag(AVIOContext *pb, MOVTrack *track)
1289 int64_t duration = av_rescale_rnd(track->trackDuration, MOV_TIMESCALE,
1290 track->timescale, AV_ROUND_UP);
1291 int version = duration < INT32_MAX ? 0 : 1;
1292 int entry_size, entry_count, size;
1293 int64_t delay, start_ct = track->cluster[0].cts;
1294 delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
1295 track->timescale, AV_ROUND_DOWN);
1296 version |= delay < INT32_MAX ? 0 : 1;
1298 entry_size = (version == 1) ? 20 : 12;
1299 entry_count = 1 + (delay > 0);
1300 size = 24 + entry_count * entry_size;
1302 /* write the atom data */
1303 avio_wb32(pb, size);
1304 ffio_wfourcc(pb, "edts");
1305 avio_wb32(pb, size - 8);
1306 ffio_wfourcc(pb, "elst");
1307 avio_w8(pb, version);
1308 avio_wb24(pb, 0); /* flags */
1310 avio_wb32(pb, entry_count);
1311 if (delay > 0) { /* add an empty edit to delay presentation */
1313 avio_wb64(pb, delay);
1316 avio_wb32(pb, delay);
1319 avio_wb32(pb, 0x00010000);
1324 avio_wb64(pb, duration);
1325 avio_wb64(pb, start_ct);
1327 avio_wb32(pb, duration);
1328 avio_wb32(pb, start_ct);
1330 avio_wb32(pb, 0x00010000);
1334 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
1336 avio_wb32(pb, 20); // size
1337 ffio_wfourcc(pb, "tref");
1338 avio_wb32(pb, 12); // size (subatom)
1339 avio_wl32(pb, track->tref_tag);
1340 avio_wb32(pb, track->tref_id);
1344 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
1345 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
1347 avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
1348 ffio_wfourcc(pb, "uuid");
1349 ffio_wfourcc(pb, "USMT");
1350 avio_wb32(pb, 0x21d24fce);
1351 avio_wb32(pb, 0xbb88695c);
1352 avio_wb32(pb, 0xfac9c740);
1353 avio_wb32(pb, 0x1c); // another size here!
1354 ffio_wfourcc(pb, "MTDT");
1355 avio_wb32(pb, 0x00010012);
1356 avio_wb32(pb, 0x0a);
1357 avio_wb32(pb, 0x55c40000);
1363 static int mov_write_udta_sdp(AVIOContext *pb, AVFormatContext *ctx, int index)
1365 char buf[1000] = "";
1368 ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0]->codec, NULL, NULL, 0, 0, ctx);
1369 av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", index);
1372 avio_wb32(pb, len + 24);
1373 ffio_wfourcc(pb, "udta");
1374 avio_wb32(pb, len + 16);
1375 ffio_wfourcc(pb, "hnti");
1376 avio_wb32(pb, len + 8);
1377 ffio_wfourcc(pb, "sdp ");
1378 avio_write(pb, buf, len);
1382 static int mov_write_trak_tag(AVIOContext *pb, MOVTrack *track, AVStream *st)
1384 int64_t pos = avio_tell(pb);
1385 avio_wb32(pb, 0); /* size */
1386 ffio_wfourcc(pb, "trak");
1387 mov_write_tkhd_tag(pb, track, st);
1388 if (track->mode == MODE_PSP || track->flags & MOV_TRACK_CTTS || track->cluster[0].dts)
1389 mov_write_edts_tag(pb, track); // PSP Movies require edts box
1390 if (track->tref_tag)
1391 mov_write_tref_tag(pb, track);
1392 mov_write_mdia_tag(pb, track);
1393 if (track->mode == MODE_PSP)
1394 mov_write_uuid_tag_psp(pb,track); // PSP Movies require this uuid box
1395 if (track->tag == MKTAG('r','t','p',' '))
1396 mov_write_udta_sdp(pb, track->rtp_ctx, track->trackID);
1397 if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO && track->mode == MODE_MOV) {
1398 double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
1399 if (0.0 != sample_aspect_ratio && 1.0 != sample_aspect_ratio)
1400 mov_write_tapt_tag(pb, track);
1402 return updateSize(pb, pos);
1406 /* TODO: Not sorted out, but not necessary either */
1407 static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
1409 avio_wb32(pb, 0x15); /* size */
1410 ffio_wfourcc(pb, "iods");
1411 avio_wb32(pb, 0); /* version & flags */
1412 avio_wb16(pb, 0x1007);
1414 avio_wb16(pb, 0x4fff);
1415 avio_wb16(pb, 0xfffe);
1416 avio_wb16(pb, 0x01ff);
1421 static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
1423 int maxTrackID = 1, i;
1424 int64_t maxTrackLenTemp, maxTrackLen = 0;
1427 for (i=0; i<mov->nb_streams; i++) {
1428 if(mov->tracks[i].entry > 0) {
1429 maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration,
1431 mov->tracks[i].timescale,
1433 if(maxTrackLen < maxTrackLenTemp)
1434 maxTrackLen = maxTrackLenTemp;
1435 if(maxTrackID < mov->tracks[i].trackID)
1436 maxTrackID = mov->tracks[i].trackID;
1440 version = maxTrackLen < UINT32_MAX ? 0 : 1;
1441 (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
1442 ffio_wfourcc(pb, "mvhd");
1443 avio_w8(pb, version);
1444 avio_wb24(pb, 0); /* flags */
1446 avio_wb64(pb, mov->time);
1447 avio_wb64(pb, mov->time);
1449 avio_wb32(pb, mov->time); /* creation time */
1450 avio_wb32(pb, mov->time); /* modification time */
1452 avio_wb32(pb, MOV_TIMESCALE);
1453 (version == 1) ? avio_wb64(pb, maxTrackLen) : avio_wb32(pb, maxTrackLen); /* duration of longest track */
1455 avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
1456 avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
1457 avio_wb16(pb, 0); /* reserved */
1458 avio_wb32(pb, 0); /* reserved */
1459 avio_wb32(pb, 0); /* reserved */
1461 /* Matrix structure */
1462 avio_wb32(pb, 0x00010000); /* reserved */
1463 avio_wb32(pb, 0x0); /* reserved */
1464 avio_wb32(pb, 0x0); /* reserved */
1465 avio_wb32(pb, 0x0); /* reserved */
1466 avio_wb32(pb, 0x00010000); /* reserved */
1467 avio_wb32(pb, 0x0); /* reserved */
1468 avio_wb32(pb, 0x0); /* reserved */
1469 avio_wb32(pb, 0x0); /* reserved */
1470 avio_wb32(pb, 0x40000000); /* reserved */
1472 avio_wb32(pb, 0); /* reserved (preview time) */
1473 avio_wb32(pb, 0); /* reserved (preview duration) */
1474 avio_wb32(pb, 0); /* reserved (poster time) */
1475 avio_wb32(pb, 0); /* reserved (selection time) */
1476 avio_wb32(pb, 0); /* reserved (selection duration) */
1477 avio_wb32(pb, 0); /* reserved (current time) */
1478 avio_wb32(pb, maxTrackID+1); /* Next track id */
1482 static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
1485 avio_wb32(pb, 33); /* size */
1486 ffio_wfourcc(pb, "hdlr");
1489 ffio_wfourcc(pb, "mdir");
1490 ffio_wfourcc(pb, "appl");
1497 /* helper function to write a data tag with the specified string as data */
1498 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
1501 int size = 16 + strlen(data);
1502 avio_wb32(pb, size); /* size */
1503 ffio_wfourcc(pb, "data");
1506 avio_write(pb, data, strlen(data));
1510 lang = ff_mov_iso639_to_lang("und", 1);
1511 avio_wb16(pb, strlen(data)); /* string length */
1512 avio_wb16(pb, lang);
1513 avio_write(pb, data, strlen(data));
1514 return strlen(data) + 4;
1518 static int mov_write_string_tag(AVIOContext *pb, const char *name, const char *value, int lang, int long_style){
1520 if (value && value[0]) {
1521 int64_t pos = avio_tell(pb);
1522 avio_wb32(pb, 0); /* size */
1523 ffio_wfourcc(pb, name);
1524 mov_write_string_data_tag(pb, value, lang, long_style);
1525 size= updateSize(pb, pos);
1530 static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
1531 const char *name, const char *tag,
1534 int l, lang = 0, len, len2;
1535 AVDictionaryEntry *t, *t2 = NULL;
1538 if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
1541 len = strlen(t->key);
1542 snprintf(tag2, sizeof(tag2), "%s-", tag);
1543 while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
1544 len2 = strlen(t2->key);
1545 if (len2 == len+4 && !strcmp(t->value, t2->value)
1546 && (l=ff_mov_iso639_to_lang(&t2->key[len2-3], 1)) >= 0) {
1551 return mov_write_string_tag(pb, name, t->value, lang, long_style);
1554 /* iTunes track number */
1555 static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
1558 AVDictionaryEntry *t = av_dict_get(s->metadata, "track", NULL, 0);
1559 int size = 0, track = t ? atoi(t->value) : 0;
1561 avio_wb32(pb, 32); /* size */
1562 ffio_wfourcc(pb, "trkn");
1563 avio_wb32(pb, 24); /* size */
1564 ffio_wfourcc(pb, "data");
1565 avio_wb32(pb, 0); // 8 bytes empty
1567 avio_wb16(pb, 0); // empty
1568 avio_wb16(pb, track); // track number
1569 avio_wb16(pb, 0); // total track number
1570 avio_wb16(pb, 0); // empty
1576 /* iTunes meta data list */
1577 static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
1580 int64_t pos = avio_tell(pb);
1581 avio_wb32(pb, 0); /* size */
1582 ffio_wfourcc(pb, "ilst");
1583 mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
1584 mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
1585 mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
1586 mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
1587 mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
1588 mov_write_string_metadata(s, pb, "\251day", "date" , 1);
1589 mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
1590 mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
1591 mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
1592 mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
1593 mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
1594 mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
1595 mov_write_string_metadata(s, pb, "desc", "description",1);
1596 mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
1597 mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
1598 mov_write_string_metadata(s, pb, "tven", "episode_id",1);
1599 mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
1600 mov_write_trkn_tag(pb, mov, s);
1601 return updateSize(pb, pos);
1604 /* iTunes meta data tag */
1605 static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
1609 int64_t pos = avio_tell(pb);
1610 avio_wb32(pb, 0); /* size */
1611 ffio_wfourcc(pb, "meta");
1613 mov_write_itunes_hdlr_tag(pb, mov, s);
1614 mov_write_ilst_tag(pb, mov, s);
1615 size = updateSize(pb, pos);
1619 static int utf8len(const uint8_t *b)
1624 GET_UTF8(val, *b++, return -1;)
1630 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
1634 GET_UTF8(val, *b++, return -1;)
1637 avio_wb16(pb, 0x00);
1641 static uint16_t language_code(const char *str)
1643 return (((str[0]-0x60) & 0x1F) << 10) + (((str[1]-0x60) & 0x1F) << 5) + ((str[2]-0x60) & 0x1F);
1646 static int mov_write_3gp_udta_tag(AVIOContext *pb, AVFormatContext *s,
1647 const char *tag, const char *str)
1649 int64_t pos = avio_tell(pb);
1650 AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
1651 if (!t || !utf8len(t->value))
1653 avio_wb32(pb, 0); /* size */
1654 ffio_wfourcc(pb, tag); /* type */
1655 avio_wb32(pb, 0); /* version + flags */
1656 if (!strcmp(tag, "yrrc"))
1657 avio_wb16(pb, atoi(t->value));
1659 avio_wb16(pb, language_code("eng")); /* language */
1660 avio_write(pb, t->value, strlen(t->value)+1); /* UTF8 string value */
1661 if (!strcmp(tag, "albm") &&
1662 (t = av_dict_get(s->metadata, "track", NULL, 0)))
1663 avio_w8(pb, atoi(t->value));
1665 return updateSize(pb, pos);
1668 static int mov_write_chpl_tag(AVIOContext *pb, AVFormatContext *s)
1670 int64_t pos = avio_tell(pb);
1671 int i, nb_chapters = FFMIN(s->nb_chapters, 255);
1673 avio_wb32(pb, 0); // size
1674 ffio_wfourcc(pb, "chpl");
1675 avio_wb32(pb, 0x01000000); // version + flags
1676 avio_wb32(pb, 0); // unknown
1677 avio_w8(pb, nb_chapters);
1679 for (i = 0; i < nb_chapters; i++) {
1680 AVChapter *c = s->chapters[i];
1681 AVDictionaryEntry *t;
1682 avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
1684 if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
1685 int len = FFMIN(strlen(t->value), 255);
1687 avio_write(pb, t->value, len);
1691 return updateSize(pb, pos);
1694 static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
1697 AVIOContext *pb_buf;
1701 for (i = 0; i < s->nb_streams; i++)
1702 if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {
1706 ret = avio_open_dyn_buf(&pb_buf);
1710 if (mov->mode & MODE_3GP) {
1711 mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
1712 mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
1713 mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
1714 mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
1715 mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
1716 mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
1717 mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
1718 mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
1719 } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
1720 mov_write_string_metadata(s, pb_buf, "\251ART", "artist" , 0);
1721 mov_write_string_metadata(s, pb_buf, "\251nam", "title" , 0);
1722 mov_write_string_metadata(s, pb_buf, "\251aut", "author" , 0);
1723 mov_write_string_metadata(s, pb_buf, "\251alb", "album" , 0);
1724 mov_write_string_metadata(s, pb_buf, "\251day", "date" , 0);
1725 mov_write_string_metadata(s, pb_buf, "\251swr", "encoder" , 0);
1726 mov_write_string_metadata(s, pb_buf, "\251des", "comment" , 0);
1727 mov_write_string_metadata(s, pb_buf, "\251gen", "genre" , 0);
1728 mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright" , 0);
1730 /* iTunes meta data */
1731 mov_write_meta_tag(pb_buf, mov, s);
1735 mov_write_chpl_tag(pb_buf, s);
1737 if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
1738 avio_wb32(pb, size+8);
1739 ffio_wfourcc(pb, "udta");
1740 avio_write(pb, buf, size);
1747 static void mov_write_psp_udta_tag(AVIOContext *pb,
1748 const char *str, const char *lang, int type)
1750 int len = utf8len(str)+1;
1753 avio_wb16(pb, len*2+10); /* size */
1754 avio_wb32(pb, type); /* type */
1755 avio_wb16(pb, language_code(lang)); /* language */
1756 avio_wb16(pb, 0x01); /* ? */
1757 ascii_to_wc(pb, str);
1760 static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
1762 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1766 pos = avio_tell(pb);
1767 avio_wb32(pb, 0); /* size placeholder*/
1768 ffio_wfourcc(pb, "uuid");
1769 ffio_wfourcc(pb, "USMT");
1770 avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
1771 avio_wb32(pb, 0xbb88695c);
1772 avio_wb32(pb, 0xfac9c740);
1774 pos2 = avio_tell(pb);
1775 avio_wb32(pb, 0); /* size placeholder*/
1776 ffio_wfourcc(pb, "MTDT");
1780 avio_wb16(pb, 0x0C); /* size */
1781 avio_wb32(pb, 0x0B); /* type */
1782 avio_wb16(pb, language_code("und")); /* language */
1783 avio_wb16(pb, 0x0); /* ? */
1784 avio_wb16(pb, 0x021C); /* data */
1786 mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
1787 mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
1788 // snprintf(dt,32,"%04d/%02d/%02d %02d:%02d:%02d",t_st->tm_year+1900,t_st->tm_mon+1,t_st->tm_mday,t_st->tm_hour,t_st->tm_min,t_st->tm_sec);
1789 mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
1791 updateSize(pb, pos2);
1792 return updateSize(pb, pos);
1798 static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
1802 int64_t pos = avio_tell(pb);
1803 avio_wb32(pb, 0); /* size placeholder*/
1804 ffio_wfourcc(pb, "moov");
1806 for (i=0; i<mov->nb_streams; i++) {
1807 if(mov->tracks[i].entry <= 0) continue;
1809 mov->tracks[i].time = mov->time;
1810 mov->tracks[i].trackID = i+1;
1813 if (mov->chapter_track)
1814 for (i=0; i<s->nb_streams; i++) {
1815 mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
1816 mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].trackID;
1818 for (i = 0; i < mov->nb_streams; i++) {
1819 if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
1820 mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
1821 mov->tracks[i].tref_id =
1822 mov->tracks[mov->tracks[i].src_track].trackID;
1826 mov_write_mvhd_tag(pb, mov);
1827 //mov_write_iods_tag(pb, mov);
1828 for (i=0; i<mov->nb_streams; i++) {
1829 if(mov->tracks[i].entry > 0) {
1830 mov_write_trak_tag(pb, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
1834 if (mov->mode == MODE_PSP)
1835 mov_write_uuidusmt_tag(pb, s);
1837 mov_write_udta_tag(pb, mov, s);
1839 return updateSize(pb, pos);
1842 static int mov_write_mdat_tag(AVIOContext *pb, MOVMuxContext *mov)
1844 avio_wb32(pb, 8); // placeholder for extended size field (64 bit)
1845 ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
1847 mov->mdat_pos = avio_tell(pb);
1848 avio_wb32(pb, 0); /* size placeholder*/
1849 ffio_wfourcc(pb, "mdat");
1853 /* TODO: This needs to be more general */
1854 static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
1856 MOVMuxContext *mov = s->priv_data;
1857 int64_t pos = avio_tell(pb);
1858 int has_h264 = 0, has_video = 0;
1862 for (i = 0; i < s->nb_streams; i++) {
1863 AVStream *st = s->streams[i];
1864 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1866 if (st->codec->codec_id == CODEC_ID_H264)
1870 avio_wb32(pb, 0); /* size */
1871 ffio_wfourcc(pb, "ftyp");
1873 if (mov->mode == MODE_3GP) {
1874 ffio_wfourcc(pb, has_h264 ? "3gp6" : "3gp4");
1875 minor = has_h264 ? 0x100 : 0x200;
1876 } else if (mov->mode & MODE_3G2) {
1877 ffio_wfourcc(pb, has_h264 ? "3g2b" : "3g2a");
1878 minor = has_h264 ? 0x20000 : 0x10000;
1879 }else if (mov->mode == MODE_PSP)
1880 ffio_wfourcc(pb, "MSNV");
1881 else if (mov->mode == MODE_MP4)
1882 ffio_wfourcc(pb, "isom");
1883 else if (mov->mode == MODE_IPOD)
1884 ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
1886 ffio_wfourcc(pb, "qt ");
1888 avio_wb32(pb, minor);
1890 if(mov->mode == MODE_MOV)
1891 ffio_wfourcc(pb, "qt ");
1893 ffio_wfourcc(pb, "isom");
1894 ffio_wfourcc(pb, "iso2");
1896 ffio_wfourcc(pb, "avc1");
1899 if (mov->mode == MODE_3GP)
1900 ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
1901 else if (mov->mode & MODE_3G2)
1902 ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
1903 else if (mov->mode == MODE_PSP)
1904 ffio_wfourcc(pb, "MSNV");
1905 else if (mov->mode == MODE_MP4)
1906 ffio_wfourcc(pb, "mp41");
1907 return updateSize(pb, pos);
1910 static void mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
1912 AVCodecContext *VideoCodec = s->streams[0]->codec;
1913 AVCodecContext *AudioCodec = s->streams[1]->codec;
1914 int AudioRate = AudioCodec->sample_rate;
1915 int FrameRate = ((VideoCodec->time_base.den) * (0x10000))/ (VideoCodec->time_base.num);
1916 int audio_kbitrate= AudioCodec->bit_rate / 1000;
1917 int video_kbitrate= FFMIN(VideoCodec->bit_rate / 1000, 800 - audio_kbitrate);
1919 avio_wb32(pb, 0x94); /* size */
1920 ffio_wfourcc(pb, "uuid");
1921 ffio_wfourcc(pb, "PROF");
1923 avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
1924 avio_wb32(pb, 0xbb88695c);
1925 avio_wb32(pb, 0xfac9c740);
1927 avio_wb32(pb, 0x0); /* ? */
1928 avio_wb32(pb, 0x3); /* 3 sections ? */
1930 avio_wb32(pb, 0x14); /* size */
1931 ffio_wfourcc(pb, "FPRF");
1932 avio_wb32(pb, 0x0); /* ? */
1933 avio_wb32(pb, 0x0); /* ? */
1934 avio_wb32(pb, 0x0); /* ? */
1936 avio_wb32(pb, 0x2c); /* size */
1937 ffio_wfourcc(pb, "APRF");/* audio */
1939 avio_wb32(pb, 0x2); /* TrackID */
1940 ffio_wfourcc(pb, "mp4a");
1941 avio_wb32(pb, 0x20f);
1943 avio_wb32(pb, audio_kbitrate);
1944 avio_wb32(pb, audio_kbitrate);
1945 avio_wb32(pb, AudioRate);
1946 avio_wb32(pb, AudioCodec->channels);
1948 avio_wb32(pb, 0x34); /* size */
1949 ffio_wfourcc(pb, "VPRF"); /* video */
1951 avio_wb32(pb, 0x1); /* TrackID */
1952 if (VideoCodec->codec_id == CODEC_ID_H264) {
1953 ffio_wfourcc(pb, "avc1");
1954 avio_wb16(pb, 0x014D);
1955 avio_wb16(pb, 0x0015);
1957 ffio_wfourcc(pb, "mp4v");
1958 avio_wb16(pb, 0x0000);
1959 avio_wb16(pb, 0x0103);
1962 avio_wb32(pb, video_kbitrate);
1963 avio_wb32(pb, video_kbitrate);
1964 avio_wb32(pb, FrameRate);
1965 avio_wb32(pb, FrameRate);
1966 avio_wb16(pb, VideoCodec->width);
1967 avio_wb16(pb, VideoCodec->height);
1968 avio_wb32(pb, 0x010001); /* ? */
1971 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
1974 int i, closed_gop = 0;
1976 for (i = 0; i < pkt->size - 4; i++) {
1977 c = (c<<8) + pkt->data[i];
1978 if (c == 0x1b8) { // gop
1979 closed_gop = pkt->data[i+4]>>6 & 0x01;
1980 } else if (c == 0x100) { // pic
1981 int temp_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1982 if (!temp_ref || closed_gop) // I picture is not reordered
1983 *flags = MOV_SYNC_SAMPLE;
1985 *flags = MOV_PARTIAL_SYNC_SAMPLE;
1992 int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
1994 MOVMuxContext *mov = s->priv_data;
1995 AVIOContext *pb = s->pb;
1996 MOVTrack *trk = &mov->tracks[pkt->stream_index];
1997 AVCodecContext *enc = trk->enc;
1998 unsigned int samplesInChunk = 0;
1999 int size= pkt->size;
2001 if (!s->pb->seekable) return 0; /* Can't handle that */
2002 if (!size) return 0; /* Discard 0 sized packets */
2004 if (enc->codec_id == CODEC_ID_AMR_NB) {
2005 /* We must find out how many AMR blocks there are in one packet */
2006 static uint16_t packed_size[16] =
2007 {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
2010 while (len < size && samplesInChunk < 100) {
2011 len += packed_size[(pkt->data[len] >> 3) & 0x0F];
2014 if(samplesInChunk > 1){
2015 av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
2018 } else if (enc->codec_id == CODEC_ID_ADPCM_MS ||
2019 enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
2020 samplesInChunk = enc->frame_size;
2021 } else if (trk->sampleSize)
2022 samplesInChunk = size/trk->sampleSize;
2026 /* copy extradata if it exists */
2027 if (trk->vosLen == 0 && enc->extradata_size > 0) {
2028 trk->vosLen = enc->extradata_size;
2029 trk->vosData = av_malloc(trk->vosLen);
2030 memcpy(trk->vosData, enc->extradata, trk->vosLen);
2033 if (enc->codec_id == CODEC_ID_H264 && trk->vosLen > 0 && *(uint8_t *)trk->vosData != 1) {
2034 /* from x264 or from bytestream h264 */
2035 /* nal reformating needed */
2036 size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
2038 avio_write(pb, pkt->data, size);
2041 if ((enc->codec_id == CODEC_ID_DNXHD ||
2042 enc->codec_id == CODEC_ID_AC3) && !trk->vosLen) {
2043 /* copy frame to create needed atoms */
2045 trk->vosData = av_malloc(size);
2047 return AVERROR(ENOMEM);
2048 memcpy(trk->vosData, pkt->data, size);
2051 if (!(trk->entry % MOV_INDEX_CLUSTER_SIZE)) {
2052 trk->cluster = av_realloc(trk->cluster, (trk->entry + MOV_INDEX_CLUSTER_SIZE) * sizeof(*trk->cluster));
2057 trk->cluster[trk->entry].pos = avio_tell(pb) - size;
2058 trk->cluster[trk->entry].samplesInChunk = samplesInChunk;
2059 trk->cluster[trk->entry].size = size;
2060 trk->cluster[trk->entry].entries = samplesInChunk;
2061 trk->cluster[trk->entry].dts = pkt->dts;
2062 trk->trackDuration = pkt->dts - trk->cluster[0].dts + pkt->duration;
2064 if (pkt->pts == AV_NOPTS_VALUE) {
2065 av_log(s, AV_LOG_WARNING, "pts has no value\n");
2066 pkt->pts = pkt->dts;
2068 if (pkt->dts != pkt->pts)
2069 trk->flags |= MOV_TRACK_CTTS;
2070 trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
2071 trk->cluster[trk->entry].flags = 0;
2072 if (pkt->flags & AV_PKT_FLAG_KEY) {
2073 if (mov->mode == MODE_MOV && enc->codec_id == CODEC_ID_MPEG2VIDEO &&
2074 trk->entry > 0) { // force sync sample for the first key frame
2075 mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
2076 if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
2077 trk->flags |= MOV_TRACK_STPS;
2079 trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
2081 if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
2082 trk->hasKeyframes++;
2085 trk->sampleCount += samplesInChunk;
2086 mov->mdat_size += size;
2090 if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
2091 ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry);
2095 // QuickTime chapters involve an additional text track with the chapter names
2096 // as samples, and a tref pointing from the other tracks to the chapter one.
2097 static void mov_create_chapter_track(AVFormatContext *s, int tracknum)
2099 MOVMuxContext *mov = s->priv_data;
2100 MOVTrack *track = &mov->tracks[tracknum];
2101 AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
2104 track->mode = mov->mode;
2105 track->tag = MKTAG('t','e','x','t');
2106 track->timescale = MOV_TIMESCALE;
2107 track->enc = avcodec_alloc_context3(NULL);
2108 track->enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
2110 for (i = 0; i < s->nb_chapters; i++) {
2111 AVChapter *c = s->chapters[i];
2112 AVDictionaryEntry *t;
2114 int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
2115 pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
2116 pkt.duration = end - pkt.dts;
2118 if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
2119 len = strlen(t->value);
2121 pkt.data = av_malloc(pkt.size);
2122 AV_WB16(pkt.data, len);
2123 memcpy(pkt.data+2, t->value, len);
2124 ff_mov_write_packet(s, &pkt);
2125 av_freep(&pkt.data);
2130 static int mov_write_header(AVFormatContext *s)
2132 AVIOContext *pb = s->pb;
2133 MOVMuxContext *mov = s->priv_data;
2134 AVDictionaryEntry *t;
2135 int i, hint_track = 0;
2137 if (!s->pb->seekable) {
2138 av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
2142 /* Default mode == MP4 */
2143 mov->mode = MODE_MP4;
2145 if (s->oformat != NULL) {
2146 if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
2147 else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
2148 else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
2149 else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
2150 else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
2152 mov_write_ftyp_tag(pb,s);
2153 if (mov->mode == MODE_PSP) {
2154 if (s->nb_streams != 2) {
2155 av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
2158 mov_write_uuidprof_tag(pb,s);
2162 mov->nb_streams = s->nb_streams;
2163 if (mov->mode & (MODE_MOV|MODE_IPOD) && s->nb_chapters)
2164 mov->chapter_track = mov->nb_streams++;
2166 #if FF_API_FLAG_RTP_HINT
2167 if (s->flags & AVFMT_FLAG_RTP_HINT) {
2168 av_log(s, AV_LOG_WARNING, "The RTP_HINT flag is deprecated, enable it "
2169 "via the -movflags rtphint muxer option "
2171 mov->flags |= FF_MOV_FLAG_RTP_HINT;
2174 if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
2175 /* Add hint tracks for each audio and video stream */
2176 hint_track = mov->nb_streams;
2177 for (i = 0; i < s->nb_streams; i++) {
2178 AVStream *st = s->streams[i];
2179 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2180 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2186 mov->tracks = av_mallocz(mov->nb_streams*sizeof(*mov->tracks));
2188 return AVERROR(ENOMEM);
2190 for(i=0; i<s->nb_streams; i++){
2191 AVStream *st= s->streams[i];
2192 MOVTrack *track= &mov->tracks[i];
2193 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
2195 track->enc = st->codec;
2196 track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
2197 if (track->language < 0)
2198 track->language = 0;
2199 track->mode = mov->mode;
2200 track->tag = mov_find_codec_tag(s, track);
2202 av_log(s, AV_LOG_ERROR, "track %d: could not find tag, "
2203 "codec not currently supported in container\n", i);
2206 /* If hinting of this track is enabled by a later hint track,
2207 * this is updated. */
2208 track->hint_track = -1;
2209 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
2210 if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
2211 track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
2212 track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
2213 if (st->codec->width != 720 || (st->codec->height != 608 && st->codec->height != 512)) {
2214 av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
2217 track->height = track->tag>>24 == 'n' ? 486 : 576;
2219 track->timescale = st->codec->time_base.den;
2220 if (track->mode == MODE_MOV && track->timescale > 100000)
2221 av_log(s, AV_LOG_WARNING,
2222 "WARNING codec timebase is very high. If duration is too long,\n"
2223 "file may not be playable by quicktime. Specify a shorter timebase\n"
2224 "or choose different container.\n");
2225 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
2226 track->timescale = st->codec->sample_rate;
2227 if(!st->codec->frame_size && !av_get_bits_per_sample(st->codec->codec_id)) {
2228 av_log(s, AV_LOG_ERROR, "track %d: codec frame size is not set\n", i);
2230 }else if(st->codec->codec_id == CODEC_ID_ADPCM_MS ||
2231 st->codec->codec_id == CODEC_ID_ADPCM_IMA_WAV){
2232 if (!st->codec->block_align) {
2233 av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i);
2236 track->sampleSize = st->codec->block_align;
2237 }else if(st->codec->frame_size > 1){ /* assume compressed audio */
2238 track->audio_vbr = 1;
2240 st->codec->frame_size = 1;
2241 track->sampleSize = (av_get_bits_per_sample(st->codec->codec_id) >> 3) * st->codec->channels;
2243 if (track->mode != MODE_MOV) {
2244 if (track->timescale > UINT16_MAX) {
2245 av_log(s, AV_LOG_ERROR, "track %d: output format does not support "
2246 "sample rate %dhz\n", i, track->timescale);
2249 if (track->enc->codec_id == CODEC_ID_MP3 && track->timescale < 16000) {
2250 av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not supported\n",
2251 i, track->enc->sample_rate);
2255 }else if(st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE){
2256 track->timescale = st->codec->time_base.den;
2259 track->height = st->codec->height;
2261 av_set_pts_info(st, 64, 1, track->timescale);
2264 mov_write_mdat_tag(pb, mov);
2266 #if FF_API_TIMESTAMP
2268 mov->time = s->timestamp;
2271 if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
2272 mov->time = ff_iso8601_to_unix_time(t->value);
2273 mov->time += 0x7C25B080; //1970 based -> 1904 based
2275 if (mov->chapter_track)
2276 mov_create_chapter_track(s, mov->chapter_track);
2278 if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
2279 /* Initialize the hint tracks for each audio and video stream */
2280 for (i = 0; i < s->nb_streams; i++) {
2281 AVStream *st = s->streams[i];
2282 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2283 st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2284 ff_mov_init_hinting(s, hint_track, i);
2294 av_freep(&mov->tracks);
2298 static int mov_write_trailer(AVFormatContext *s)
2300 MOVMuxContext *mov = s->priv_data;
2301 AVIOContext *pb = s->pb;
2305 int64_t moov_pos = avio_tell(pb);
2307 /* Write size of mdat tag */
2308 if (mov->mdat_size+8 <= UINT32_MAX) {
2309 avio_seek(pb, mov->mdat_pos, SEEK_SET);
2310 avio_wb32(pb, mov->mdat_size+8);
2312 /* overwrite 'wide' placeholder atom */
2313 avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
2314 avio_wb32(pb, 1); /* special value: real atom size will be 64 bit value after tag field */
2315 ffio_wfourcc(pb, "mdat");
2316 avio_wb64(pb, mov->mdat_size+16);
2318 avio_seek(pb, moov_pos, SEEK_SET);
2320 mov_write_moov_tag(pb, mov, s);
2322 if (mov->chapter_track)
2323 av_freep(&mov->tracks[mov->chapter_track].enc);
2325 for (i=0; i<mov->nb_streams; i++) {
2326 if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
2327 ff_mov_close_hinting(&mov->tracks[i]);
2328 av_freep(&mov->tracks[i].cluster);
2330 if(mov->tracks[i].vosLen) av_free(mov->tracks[i].vosData);
2336 av_freep(&mov->tracks);
2341 #if CONFIG_MOV_MUXER
2343 AVOutputFormat ff_mov_muxer = {
2345 .long_name = NULL_IF_CONFIG_SMALL("MOV format"),
2346 .extensions = "mov",
2347 .priv_data_size = sizeof(MOVMuxContext),
2348 .audio_codec = CODEC_ID_AAC,
2349 #if CONFIG_LIBX264_ENCODER
2350 .video_codec = CODEC_ID_H264,
2352 .video_codec = CODEC_ID_MPEG4,
2354 .write_header = mov_write_header,
2355 .write_packet = ff_mov_write_packet,
2356 .write_trailer = mov_write_trailer,
2357 .flags = AVFMT_GLOBALHEADER,
2358 .codec_tag = (const AVCodecTag* const []){codec_movvideo_tags, codec_movaudio_tags, 0},
2359 .priv_class = &mov_muxer_class,
2362 #if CONFIG_TGP_MUXER
2364 AVOutputFormat ff_tgp_muxer = {
2366 .long_name = NULL_IF_CONFIG_SMALL("3GP format"),
2367 .extensions = "3gp",
2368 .priv_data_size = sizeof(MOVMuxContext),
2369 .audio_codec = CODEC_ID_AMR_NB,
2370 .video_codec = CODEC_ID_H263,
2371 .write_header = mov_write_header,
2372 .write_packet = ff_mov_write_packet,
2373 .write_trailer = mov_write_trailer,
2374 .flags = AVFMT_GLOBALHEADER,
2375 .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
2376 .priv_class = &tgp_muxer_class,
2379 #if CONFIG_MP4_MUXER
2381 AVOutputFormat ff_mp4_muxer = {
2383 .long_name = NULL_IF_CONFIG_SMALL("MP4 format"),
2384 .mime_type = "application/mp4",
2385 .extensions = "mp4",
2386 .priv_data_size = sizeof(MOVMuxContext),
2387 .audio_codec = CODEC_ID_AAC,
2388 #if CONFIG_LIBX264_ENCODER
2389 .video_codec = CODEC_ID_H264,
2391 .video_codec = CODEC_ID_MPEG4,
2393 .write_header = mov_write_header,
2394 .write_packet = ff_mov_write_packet,
2395 .write_trailer = mov_write_trailer,
2396 .flags = AVFMT_GLOBALHEADER,
2397 .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
2398 .priv_class = &mp4_muxer_class,
2401 #if CONFIG_PSP_MUXER
2403 AVOutputFormat ff_psp_muxer = {
2405 .long_name = NULL_IF_CONFIG_SMALL("PSP MP4 format"),
2406 .extensions = "mp4,psp",
2407 .priv_data_size = sizeof(MOVMuxContext),
2408 .audio_codec = CODEC_ID_AAC,
2409 #if CONFIG_LIBX264_ENCODER
2410 .video_codec = CODEC_ID_H264,
2412 .video_codec = CODEC_ID_MPEG4,
2414 .write_header = mov_write_header,
2415 .write_packet = ff_mov_write_packet,
2416 .write_trailer = mov_write_trailer,
2417 .flags = AVFMT_GLOBALHEADER,
2418 .codec_tag = (const AVCodecTag* const []){ff_mp4_obj_type, 0},
2419 .priv_class = &psp_muxer_class,
2422 #if CONFIG_TG2_MUXER
2424 AVOutputFormat ff_tg2_muxer = {
2426 .long_name = NULL_IF_CONFIG_SMALL("3GP2 format"),
2427 .extensions = "3g2",
2428 .priv_data_size = sizeof(MOVMuxContext),
2429 .audio_codec = CODEC_ID_AMR_NB,
2430 .video_codec = CODEC_ID_H263,
2431 .write_header = mov_write_header,
2432 .write_packet = ff_mov_write_packet,
2433 .write_trailer = mov_write_trailer,
2434 .flags = AVFMT_GLOBALHEADER,
2435 .codec_tag = (const AVCodecTag* const []){codec_3gp_tags, 0},
2436 .priv_class = &tg2_muxer_class,
2439 #if CONFIG_IPOD_MUXER
2441 AVOutputFormat ff_ipod_muxer = {
2443 .long_name = NULL_IF_CONFIG_SMALL("iPod H.264 MP4 format"),
2444 .mime_type = "application/mp4",
2445 .extensions = "m4v,m4a",
2446 .priv_data_size = sizeof(MOVMuxContext),
2447 .audio_codec = CODEC_ID_AAC,
2448 .video_codec = CODEC_ID_H264,
2449 .write_header = mov_write_header,
2450 .write_packet = ff_mov_write_packet,
2451 .write_trailer = mov_write_trailer,
2452 .flags = AVFMT_GLOBALHEADER,
2453 .codec_tag = (const AVCodecTag* const []){codec_ipod_tags, 0},
2454 .priv_class = &ipod_muxer_class,