2 * MPEG-DASH ISO BMFF segmenter
3 * Copyright (c) 2014 Martin Storsjo
4 * Copyright (c) 2018 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avassert.h"
29 #include "libavutil/avutil.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/parseutils.h"
35 #include "libavutil/rational.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
42 #include "avio_internal.h"
43 #include "hlsplaylist.h"
44 #if CONFIG_HTTP_PROTOCOL
49 #include "os_support.h"
55 SEGMENT_TYPE_AUTO = 0,
63 FRAG_TYPE_EVERY_FRAME,
69 typedef struct Segment {
72 int range_length, index_length;
74 double prog_date_time;
79 typedef struct AdaptationSet {
83 int64_t frag_duration;
85 enum AVMediaType media_type;
86 AVDictionary *metadata;
87 AVRational min_frame_rate, max_frame_rate;
88 int ambiguous_frame_rate;
89 int64_t max_frag_duration;
92 typedef struct OutputStream {
94 int ctx_inited, as_idx;
96 AVCodecParserContext *parser;
97 AVCodecContext *parser_avctx;
100 int64_t init_start_pos, pos;
101 int init_range_length;
102 int nb_segments, segments_size, segment_index;
103 int64_t seg_duration;
104 int64_t frag_duration;
105 int64_t last_duration;
107 int64_t first_pts, start_pts, max_pts;
108 int64_t last_dts, last_pts;
111 SegmentType segment_type; /* segment type selected for this particular stream */
112 const char *format_name;
113 const char *extension_name;
114 const char *single_file_name; /* file names selected for this particular stream */
115 const char *init_seg_name;
116 const char *media_seg_name;
121 char full_path[1024];
122 char temp_path[1024];
123 double availability_time_offset;
124 int64_t producer_reference_time;
125 char producer_reference_time_str[100];
127 int64_t total_pkt_duration;
133 typedef struct DASHContext {
134 const AVClass *class; /* Class for private options. */
135 char *adaptation_sets;
139 int extra_window_size;
140 #if FF_API_DASH_MIN_SEG_DURATION
141 int min_seg_duration;
143 int64_t seg_duration;
144 int64_t frag_duration;
149 OutputStream *streams;
151 int64_t last_duration;
152 int64_t total_duration;
153 char availability_start_time[100];
155 int64_t presentation_time_offset;
157 const char *single_file_name; /* file names as specified in options */
158 const char *init_seg_name;
159 const char *media_seg_name;
160 const char *utc_timing_url;
162 const char *user_agent;
165 int master_playlist_created;
166 AVIOContext *mpd_out;
167 AVIOContext *m3u8_out;
170 int index_correction;
171 AVDictionary *format_options;
173 SegmentType segment_type_option; /* segment type as specified in options */
174 int ignore_io_errors;
177 int master_publish_rate;
178 int nr_of_streams_to_flush;
179 int nr_of_streams_flushed;
182 int64_t max_gop_size;
185 static struct codec_string {
189 { AV_CODEC_ID_VP8, "vp8" },
190 { AV_CODEC_ID_VP9, "vp9" },
191 { AV_CODEC_ID_VORBIS, "vorbis" },
192 { AV_CODEC_ID_OPUS, "opus" },
193 { AV_CODEC_ID_FLAC, "flac" },
197 static struct format_string {
198 SegmentType segment_type;
201 { SEGMENT_TYPE_AUTO, "auto" },
202 { SEGMENT_TYPE_MP4, "mp4" },
203 { SEGMENT_TYPE_WEBM, "webm" },
207 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
208 AVDictionary **options) {
209 DASHContext *c = s->priv_data;
210 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
211 int err = AVERROR_MUXER_NOT_FOUND;
212 if (!*pb || !http_base_proto || !c->http_persistent) {
213 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
214 #if CONFIG_HTTP_PROTOCOL
216 URLContext *http_url_context = ffio_geturlcontext(*pb);
217 av_assert0(http_url_context);
218 err = ff_http_do_new_request(http_url_context, filename);
220 ff_format_io_close(s, pb);
226 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
227 DASHContext *c = s->priv_data;
228 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
233 if (!http_base_proto || !c->http_persistent) {
234 ff_format_io_close(s, pb);
235 #if CONFIG_HTTP_PROTOCOL
237 URLContext *http_url_context = ffio_geturlcontext(*pb);
238 av_assert0(http_url_context);
240 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
245 static const char *get_format_str(SegmentType segment_type) {
247 for (i = 0; i < SEGMENT_TYPE_NB; i++)
248 if (formats[i].segment_type == segment_type)
249 return formats[i].str;
253 static const char *get_extension_str(SegmentType type, int single_file)
257 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
258 case SEGMENT_TYPE_WEBM: return "webm";
259 default: return NULL;
263 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
264 DASHContext *c = s->priv_data;
265 char errbuf[AV_ERROR_MAX_STRING_SIZE];
266 av_strerror(err, errbuf, sizeof(errbuf));
267 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
268 "Unable to open %s for writing: %s\n", url, errbuf);
269 return c->ignore_io_errors ? 0 : err;
272 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
274 if (segment_type == SEGMENT_TYPE_AUTO) {
275 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
276 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
277 segment_type = SEGMENT_TYPE_WEBM;
279 segment_type = SEGMENT_TYPE_MP4;
286 static int init_segment_types(AVFormatContext *s)
288 DASHContext *c = s->priv_data;
289 int has_mp4_streams = 0;
290 for (int i = 0; i < s->nb_streams; ++i) {
291 OutputStream *os = &c->streams[i];
292 SegmentType segment_type = select_segment_type(
293 c->segment_type_option, s->streams[i]->codecpar->codec_id);
294 os->segment_type = segment_type;
295 os->format_name = get_format_str(segment_type);
296 if (!os->format_name) {
297 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
298 return AVERROR_MUXER_NOT_FOUND;
300 os->extension_name = get_extension_str(segment_type, c->single_file);
301 if (!os->extension_name) {
302 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
303 return AVERROR_MUXER_NOT_FOUND;
306 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
309 if (c->hls_playlist && !has_mp4_streams) {
310 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
317 static int check_file_extension(const char *filename, const char *extension) {
319 if (!filename || !extension)
321 dot = strrchr(filename, '.');
322 if (dot && !strcmp(dot + 1, extension))
327 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
328 AVRational *frame_rate, char *str, int size) {
330 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
332 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
333 vpcc.profile, vpcc.level, vpcc.bitdepth);
335 // Default to just vp9 in case of error while finding out profile or level
336 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
337 av_strlcpy(str, "vp9", size);
342 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
343 AVRational *frame_rate, char *str, int size)
345 const AVCodecTag *tags[2] = { NULL, NULL };
349 // common Webm codecs are not part of RFC 6381
350 for (i = 0; codecs[i].id; i++)
351 if (codecs[i].id == par->codec_id) {
352 if (codecs[i].id == AV_CODEC_ID_VP9) {
353 set_vp9_codec_str(s, par, frame_rate, str, size);
355 av_strlcpy(str, codecs[i].str, size);
360 // for codecs part of RFC 6381
361 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
362 tags[0] = ff_codec_movvideo_tags;
363 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
364 tags[0] = ff_codec_movaudio_tags;
368 tag = par->codec_tag;
370 tag = av_codec_get_tag(tags, par->codec_id);
378 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
380 tags[0] = ff_mp4_obj_type;
381 oti = av_codec_get_tag(tags, par->codec_id);
383 av_strlcatf(str, size, ".%02"PRIx32, oti);
387 if (tag == MKTAG('m', 'p', '4', 'a')) {
388 if (par->extradata_size >= 2) {
389 int aot = par->extradata[0] >> 3;
391 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
392 av_strlcatf(str, size, ".%d", aot);
394 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
395 // Unimplemented, should output ProfileLevelIndication as a decimal number
396 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
398 } else if (!strcmp(str, "avc1")) {
399 uint8_t *tmpbuf = NULL;
400 uint8_t *extradata = par->extradata;
401 int extradata_size = par->extradata_size;
404 if (extradata[0] != 1) {
406 if (avio_open_dyn_buf(&pb) < 0)
408 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
409 ffio_free_dyn_buf(&pb);
412 extradata_size = avio_close_dyn_buf(pb, &extradata);
416 if (extradata_size >= 4)
417 av_strlcatf(str, size, ".%02x%02x%02x",
418 extradata[1], extradata[2], extradata[3]);
420 } else if (!strcmp(str, "av01")) {
421 AV1SequenceParameters seq;
422 if (!par->extradata_size)
424 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
427 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
428 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
429 if (seq.color_description_present_flag)
430 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
432 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
433 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
438 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
443 return AVERROR(EINVAL);
447 av_write_frame(os->ctx, NULL);
448 avio_flush(os->ctx->pb);
450 if (!c->single_file) {
452 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
455 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
460 return avio_open_dyn_buf(&os->ctx->pb);
462 *range_length = avio_tell(os->ctx->pb) - os->pos;
467 static void set_http_options(AVDictionary **options, DASHContext *c)
470 av_dict_set(options, "method", c->method, 0);
472 av_dict_set(options, "user_agent", c->user_agent, 0);
473 if (c->http_persistent)
474 av_dict_set_int(options, "multiple_requests", 1, 0);
476 av_dict_set_int(options, "timeout", c->timeout, 0);
479 static void get_hls_playlist_name(char *playlist_name, int string_size,
480 const char *base_url, int id) {
482 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
484 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
487 static void get_start_index_number(OutputStream *os, DASHContext *c,
488 int *start_index, int *start_number) {
491 if (c->window_size) {
492 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
493 *start_number = FFMAX(os->segment_index - c->window_size, 1);
497 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
498 int representation_id, int final,
499 char *prefetch_url) {
500 DASHContext *c = s->priv_data;
501 int timescale = os->ctx->streams[0]->time_base.den;
502 char temp_filename_hls[1024];
503 char filename_hls[1024];
504 AVDictionary *http_opts = NULL;
505 int target_duration = 0;
507 const char *proto = avio_find_protocol_name(c->dirname);
508 int use_rename = proto && !strcmp(proto, "file");
509 int i, start_index, start_number;
510 double prog_date_time = 0;
512 get_start_index_number(os, c, &start_index, &start_number);
514 if (!c->hls_playlist || start_index >= os->nb_segments ||
515 os->segment_type != SEGMENT_TYPE_MP4)
518 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
519 c->dirname, representation_id);
521 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
523 set_http_options(&http_opts, c);
524 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
525 av_dict_free(&http_opts);
527 handle_io_open_error(s, ret, temp_filename_hls);
530 for (i = start_index; i < os->nb_segments; i++) {
531 Segment *seg = os->segments[i];
532 double duration = (double) seg->duration / timescale;
533 if (target_duration <= duration)
534 target_duration = lrint(duration);
537 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
538 start_number, PLAYLIST_TYPE_NONE, 0);
540 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
541 os->init_range_length, os->init_start_pos);
543 for (i = start_index; i < os->nb_segments; i++) {
544 Segment *seg = os->segments[i];
546 if (prog_date_time == 0) {
547 if (os->nb_segments == 1)
548 prog_date_time = c->start_time_s;
550 prog_date_time = seg->prog_date_time;
552 seg->prog_date_time = prog_date_time;
554 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
555 (double) seg->duration / timescale, 0,
556 seg->range_length, seg->start_pos, NULL,
557 c->single_file ? os->initfile : seg->file,
558 &prog_date_time, 0, 0, 0);
560 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
565 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
568 ff_hls_write_end_list(c->m3u8_out);
570 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
573 if (avpriv_io_move(temp_filename_hls, filename_hls) < 0) {
574 av_log(os->ctx, AV_LOG_WARNING, "renaming file %s to %s failed\n\n", temp_filename_hls, filename_hls);
578 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
580 DASHContext *c = s->priv_data;
581 int ret, range_length;
583 ret = flush_dynbuf(c, os, &range_length);
587 os->pos = os->init_range_length = range_length;
588 if (!c->single_file) {
590 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
591 dashenc_io_close(s, &os->out, filename);
596 static void dash_free(AVFormatContext *s)
598 DASHContext *c = s->priv_data;
602 for (i = 0; i < c->nb_as; i++) {
603 av_dict_free(&c->as[i].metadata);
604 av_freep(&c->as[i].descriptor);
612 for (i = 0; i < s->nb_streams; i++) {
613 OutputStream *os = &c->streams[i];
614 if (os->ctx && os->ctx->pb) {
616 ffio_free_dyn_buf(&os->ctx->pb);
618 avio_close(os->ctx->pb);
620 ff_format_io_close(s, &os->out);
621 avformat_free_context(os->ctx);
622 avcodec_free_context(&os->parser_avctx);
623 av_parser_close(os->parser);
624 for (j = 0; j < os->nb_segments; j++)
625 av_free(os->segments[j]);
626 av_free(os->segments);
627 av_freep(&os->single_file_name);
628 av_freep(&os->init_seg_name);
629 av_freep(&os->media_seg_name);
631 av_freep(&c->streams);
633 ff_format_io_close(s, &c->mpd_out);
634 ff_format_io_close(s, &c->m3u8_out);
637 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
638 int representation_id, int final)
640 DASHContext *c = s->priv_data;
641 int i, start_index, start_number;
642 get_start_index_number(os, c, &start_index, &start_number);
644 if (c->use_template) {
645 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
646 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
647 if (!c->use_timeline) {
648 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
649 if (c->streaming && os->availability_time_offset)
650 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
651 os->availability_time_offset);
653 if (c->ldash && !final && os->frag_type != FRAG_TYPE_NONE &&
654 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
655 avio_printf(out, "availabilityTimeComplete=\"false\" ");
657 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
658 if (c->presentation_time_offset)
659 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
660 avio_printf(out, ">\n");
661 if (c->use_timeline) {
662 int64_t cur_time = 0;
663 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
664 for (i = start_index; i < os->nb_segments; ) {
665 Segment *seg = os->segments[i];
667 avio_printf(out, "\t\t\t\t\t\t<S ");
668 if (i == start_index || seg->time != cur_time) {
669 cur_time = seg->time;
670 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
672 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
673 while (i + repeat + 1 < os->nb_segments &&
674 os->segments[i + repeat + 1]->duration == seg->duration &&
675 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
678 avio_printf(out, "r=\"%d\" ", repeat);
679 avio_printf(out, "/>\n");
681 cur_time += (1 + repeat) * seg->duration;
683 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
685 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
686 } else if (c->single_file) {
687 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
688 avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
689 avio_printf(out, "\t\t\t\t\t<Initialization range=\"%"PRId64"-%"PRId64"\" />\n", os->init_start_pos, os->init_start_pos + os->init_range_length - 1);
690 for (i = start_index; i < os->nb_segments; i++) {
691 Segment *seg = os->segments[i];
692 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
693 if (seg->index_length)
694 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
695 avio_printf(out, "/>\n");
697 avio_printf(out, "\t\t\t\t</SegmentList>\n");
699 avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
700 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
701 for (i = start_index; i < os->nb_segments; i++) {
702 Segment *seg = os->segments[i];
703 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
705 avio_printf(out, "\t\t\t\t</SegmentList>\n");
707 if (!c->lhls || final) {
708 write_hls_media_playlist(os, s, representation_id, final, NULL);
713 static char *xmlescape(const char *str) {
714 int outlen = strlen(str)*3/2 + 6;
715 char *out = av_realloc(NULL, outlen + 1);
719 for (; *str; str++) {
720 if (pos + 6 > outlen) {
722 outlen = 2 * outlen + 6;
723 tmp = av_realloc(out, outlen + 1);
731 memcpy(&out[pos], "&", 5);
733 } else if (*str == '<') {
734 memcpy(&out[pos], "<", 4);
736 } else if (*str == '>') {
737 memcpy(&out[pos], ">", 4);
739 } else if (*str == '\'') {
740 memcpy(&out[pos], "'", 6);
742 } else if (*str == '\"') {
743 memcpy(&out[pos], """, 6);
753 static void write_time(AVIOContext *out, int64_t time)
755 int seconds = time / AV_TIME_BASE;
756 int fractions = time % AV_TIME_BASE;
757 int minutes = seconds / 60;
758 int hours = minutes / 60;
761 avio_printf(out, "PT");
763 avio_printf(out, "%dH", hours);
764 if (hours || minutes)
765 avio_printf(out, "%dM", minutes);
766 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
769 static void format_date(char *buf, int size, int64_t time_us)
771 struct tm *ptm, tmbuf;
772 int64_t time_ms = time_us / 1000;
773 const time_t time_s = time_ms / 1000;
774 int millisec = time_ms - (time_s * 1000);
775 ptm = gmtime_r(&time_s, &tmbuf);
778 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
783 snprintf(buf + len, size - len, ".%03dZ", millisec);
787 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
790 DASHContext *c = s->priv_data;
791 AdaptationSet *as = &c->as[as_index];
792 AVDictionaryEntry *lang, *role;
795 avio_printf(out, "\t\t<AdaptationSet id=\"%s\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
796 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
797 if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
798 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
799 lang = av_dict_get(as->metadata, "language", NULL, 0);
801 avio_printf(out, " lang=\"%s\"", lang->value);
802 avio_printf(out, ">\n");
804 if (!final && c->ldash && as->max_frag_duration)
805 avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
806 role = av_dict_get(as->metadata, "role", NULL, 0);
808 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
810 avio_printf(out, "\t\t\t%s\n", as->descriptor);
811 for (i = 0; i < s->nb_streams; i++) {
812 AVStream *st = s->streams[i];
813 OutputStream *os = &c->streams[i];
814 char bandwidth_str[64] = {'\0'};
816 if (os->as_idx - 1 != as_index)
819 if (os->bit_rate > 0)
820 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
823 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
824 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
825 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
826 if (st->avg_frame_rate.num)
827 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
828 avio_printf(out, ">\n");
830 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
831 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
832 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
833 s->streams[i]->codecpar->channels);
835 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
836 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"encoder\" wallclockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
837 i, os->producer_reference_time_str, c->presentation_time_offset);
838 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
839 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
841 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE &&
842 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
843 avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
844 output_segment_list(os, out, s, i, final);
845 avio_printf(out, "\t\t\t</Representation>\n");
847 avio_printf(out, "\t\t</AdaptationSet>\n");
852 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
854 DASHContext *c = s->priv_data;
856 void *mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
858 return AVERROR(ENOMEM);
862 *as = &c->as[c->nb_as - 1];
863 memset(*as, 0, sizeof(**as));
864 (*as)->media_type = type;
865 (*as)->frag_type = -1;
870 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
872 DASHContext *c = s->priv_data;
873 AdaptationSet *as = &c->as[as_idx - 1];
874 OutputStream *os = &c->streams[i];
876 if (as->media_type != s->streams[i]->codecpar->codec_type) {
877 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
878 return AVERROR(EINVAL);
879 } else if (os->as_idx) {
880 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
881 return AVERROR(EINVAL);
888 static int parse_adaptation_sets(AVFormatContext *s)
890 DASHContext *c = s->priv_data;
891 const char *p = c->adaptation_sets;
892 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
896 // default: one AdaptationSet for each stream
898 for (i = 0; i < s->nb_streams; i++) {
899 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
901 snprintf(as->id, sizeof(as->id), "%d", i);
903 c->streams[i].as_idx = c->nb_as;
908 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
909 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
910 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2 and so on
911 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
912 // descriptor_str should be a self-closing xml tag.
913 // seg_duration and frag_duration have the same syntax as the global options of
914 // the same name, and the former have precedence over them if set.
920 } else if (state == new_set && av_strstart(p, "id=", &p)) {
922 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
926 snprintf(as->id, sizeof(as->id), "%.*s", n, p);
931 state = parse_default;
932 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
933 state = parse_seg_duration;
934 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
935 state = parse_frag_duration;
936 } else if (state == parse_seg_duration || state == parse_frag_duration) {
941 snprintf(str, sizeof(str), "%.*s", n, p);
946 ret = av_parse_time(&usecs, str, 1);
948 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
952 if (state == parse_seg_duration)
953 as->seg_duration = usecs;
955 as->frag_duration = usecs;
956 state = parse_default;
957 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
961 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
966 if (!strcmp(type_str, "duration"))
967 as->frag_type = FRAG_TYPE_DURATION;
968 else if (!strcmp(type_str, "pframes"))
969 as->frag_type = FRAG_TYPE_PFRAMES;
970 else if (!strcmp(type_str, "every_frame"))
971 as->frag_type = FRAG_TYPE_EVERY_FRAME;
972 else if (!strcmp(type_str, "none"))
973 as->frag_type = FRAG_TYPE_NONE;
975 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
978 state = parse_default;
979 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
980 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
982 as->descriptor = av_strndup(p, n);
984 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
985 return AVERROR(EINVAL);
990 state = parse_default;
991 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
992 state = parsing_streams;
993 } else if (state == parsing_streams) {
994 AdaptationSet *as = &c->as[c->nb_as - 1];
995 char idx_str[8], *end_str;
997 n = strcspn(p, " ,");
998 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1001 // if value is "a" or "v", map all streams of that type
1002 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1003 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1004 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1006 for (i = 0; i < s->nb_streams; i++) {
1007 if (s->streams[i]->codecpar->codec_type != type)
1010 as->media_type = s->streams[i]->codecpar->codec_type;
1012 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1015 } else { // select single stream
1016 i = strtol(idx_str, &end_str, 10);
1017 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1018 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1019 return AVERROR(EINVAL);
1021 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1023 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1024 as->media_type = s->streams[i]->codecpar->codec_type;
1027 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1036 return AVERROR(EINVAL);
1041 // check for unassigned streams
1042 for (i = 0; i < s->nb_streams; i++) {
1043 OutputStream *os = &c->streams[i];
1045 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1046 return AVERROR(EINVAL);
1052 static int write_manifest(AVFormatContext *s, int final)
1054 DASHContext *c = s->priv_data;
1056 char temp_filename[1024];
1058 const char *proto = avio_find_protocol_name(s->url);
1059 int use_rename = proto && !strcmp(proto, "file");
1060 static unsigned int warned_non_file = 0;
1061 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1062 AVDictionary *opts = NULL;
1064 if (!use_rename && !warned_non_file++)
1065 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1067 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1068 set_http_options(&opts, c);
1069 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1070 av_dict_free(&opts);
1072 return handle_io_open_error(s, ret, temp_filename);
1075 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1076 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1077 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1078 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1079 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1080 "\tprofiles=\"urn:mpeg:dash:profile:isoff-live:2011\"\n"
1081 "\ttype=\"%s\"\n", final ? "static" : "dynamic");
1083 avio_printf(out, "\tmediaPresentationDuration=\"");
1084 write_time(out, c->total_duration);
1085 avio_printf(out, "\"\n");
1087 int64_t update_period = c->last_duration / AV_TIME_BASE;
1089 if (c->use_template && !c->use_timeline)
1090 update_period = 500;
1091 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1093 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1094 if (c->availability_start_time[0])
1095 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1096 format_date(now_str, sizeof(now_str), av_gettime());
1098 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1099 if (c->window_size && c->use_template) {
1100 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1101 write_time(out, c->last_duration * c->window_size);
1102 avio_printf(out, "\"\n");
1105 avio_printf(out, "\tminBufferTime=\"");
1106 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1107 avio_printf(out, "\">\n");
1108 avio_printf(out, "\t<ProgramInformation>\n");
1110 char *escaped = xmlescape(title->value);
1111 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1114 avio_printf(out, "\t</ProgramInformation>\n");
1116 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1117 OutputStream *os = &c->streams[0];
1118 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1119 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1120 avio_printf(out, "\t<Period id=\"0\" start=\"");
1121 write_time(out, start_time);
1122 avio_printf(out, "\">\n");
1124 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1127 for (i = 0; i < c->nb_as; i++) {
1128 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1131 avio_printf(out, "\t</Period>\n");
1133 if (c->utc_timing_url)
1134 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1136 avio_printf(out, "</MPD>\n");
1138 dashenc_io_close(s, &c->mpd_out, temp_filename);
1141 if ((ret = avpriv_io_move(temp_filename, s->url)) < 0)
1145 if (c->hls_playlist) {
1146 char filename_hls[1024];
1147 const char *audio_group = "A1";
1148 char audio_codec_str[128] = "\0";
1150 int max_audio_bitrate = 0;
1152 // Publish master playlist only the configured rate
1153 if (c->master_playlist_created && (!c->master_publish_rate ||
1154 c->streams[0].segment_index % c->master_publish_rate))
1158 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1160 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1162 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1164 set_http_options(&opts, c);
1165 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1166 av_dict_free(&opts);
1168 return handle_io_open_error(s, ret, temp_filename);
1171 ff_hls_write_playlist_version(c->m3u8_out, 7);
1173 for (i = 0; i < s->nb_streams; i++) {
1174 char playlist_file[64];
1175 AVStream *st = s->streams[i];
1176 OutputStream *os = &c->streams[i];
1177 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1179 if (os->segment_type != SEGMENT_TYPE_MP4)
1181 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1182 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1183 playlist_file, NULL, i, is_default);
1184 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1185 os->muxer_overhead, max_audio_bitrate);
1186 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1187 if (strlen(audio_codec_str))
1188 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1189 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1194 for (i = 0; i < s->nb_streams; i++) {
1195 char playlist_file[64];
1196 char codec_str[128];
1197 AVStream *st = s->streams[i];
1198 OutputStream *os = &c->streams[i];
1199 char *agroup = NULL;
1200 char *codec_str_ptr = NULL;
1201 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1202 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1204 if (os->segment_type != SEGMENT_TYPE_MP4)
1206 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1207 if (max_audio_bitrate) {
1208 agroup = (char *)audio_group;
1209 stream_bitrate += max_audio_bitrate;
1210 av_strlcat(codec_str, ",", sizeof(codec_str));
1211 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1213 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1214 codec_str_ptr = codec_str;
1216 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1217 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1218 playlist_file, agroup,
1219 codec_str_ptr, NULL);
1221 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1223 if ((ret = avpriv_io_move(temp_filename, filename_hls)) < 0)
1225 c->master_playlist_created = 1;
1231 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1233 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1235 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1239 static int dash_init(AVFormatContext *s)
1241 DASHContext *c = s->priv_data;
1244 char basename[1024];
1246 c->nr_of_streams_to_flush = 0;
1247 if (c->single_file_name)
1250 c->use_template = 0;
1252 #if FF_API_DASH_MIN_SEG_DURATION
1253 if (c->min_seg_duration != 5000000) {
1254 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1255 c->seg_duration = c->min_seg_duration;
1258 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1259 av_log(s, AV_LOG_ERROR,
1260 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1261 return AVERROR_EXPERIMENTAL;
1264 if (c->lhls && !c->streaming) {
1265 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1269 if (c->lhls && !c->hls_playlist) {
1270 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1274 if (c->ldash && !c->streaming) {
1275 av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1279 if (c->global_sidx && !c->single_file) {
1280 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1284 if (c->global_sidx && c->streaming) {
1285 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1288 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1289 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1290 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1293 if (c->write_prft && !c->utc_timing_url) {
1294 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1298 if (c->write_prft && !c->streaming) {
1299 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1303 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1304 ptr = strrchr(c->dirname, '/');
1306 av_strlcpy(basename, &ptr[1], sizeof(basename));
1309 c->dirname[0] = '\0';
1310 av_strlcpy(basename, s->url, sizeof(basename));
1313 ptr = strrchr(basename, '.');
1317 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1319 return AVERROR(ENOMEM);
1321 if ((ret = parse_adaptation_sets(s)) < 0)
1324 if ((ret = init_segment_types(s)) < 0)
1327 for (i = 0; i < s->nb_streams; i++) {
1328 OutputStream *os = &c->streams[i];
1329 AdaptationSet *as = &c->as[os->as_idx - 1];
1330 AVFormatContext *ctx;
1332 AVDictionary *opts = NULL;
1333 char filename[1024];
1335 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1336 if (!os->bit_rate) {
1337 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1338 AV_LOG_ERROR : AV_LOG_WARNING;
1339 av_log(s, level, "No bit rate set for stream %d\n", i);
1340 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1341 return AVERROR(EINVAL);
1344 // copy AdaptationSet language and role from stream metadata
1345 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1346 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1348 if (c->init_seg_name) {
1349 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1350 if (!os->init_seg_name)
1351 return AVERROR(ENOMEM);
1353 if (c->media_seg_name) {
1354 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1355 if (!os->media_seg_name)
1356 return AVERROR(ENOMEM);
1358 if (c->single_file_name) {
1359 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1360 if (!os->single_file_name)
1361 return AVERROR(ENOMEM);
1364 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1365 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1366 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1367 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1368 av_log(s, AV_LOG_WARNING,
1369 "One or many segment file names doesn't end with .webm. "
1370 "Override -init_seg_name and/or -media_seg_name and/or "
1371 "-single_file_name to end with the extension .webm\n");
1374 // Streaming not supported as matroskaenc buffers internally before writing the output
1375 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1380 os->ctx = ctx = avformat_alloc_context();
1382 return AVERROR(ENOMEM);
1384 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1386 return AVERROR_MUXER_NOT_FOUND;
1387 ctx->interrupt_callback = s->interrupt_callback;
1388 ctx->opaque = s->opaque;
1389 ctx->io_close = s->io_close;
1390 ctx->io_open = s->io_open;
1391 ctx->strict_std_compliance = s->strict_std_compliance;
1393 if (!(st = avformat_new_stream(ctx, NULL)))
1394 return AVERROR(ENOMEM);
1395 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1396 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1397 st->time_base = s->streams[i]->time_base;
1398 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1399 ctx->avoid_negative_ts = s->avoid_negative_ts;
1400 ctx->flags = s->flags;
1402 os->parser = av_parser_init(st->codecpar->codec_id);
1404 os->parser_avctx = avcodec_alloc_context3(NULL);
1405 if (!os->parser_avctx)
1406 return AVERROR(ENOMEM);
1407 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1410 // We only want to parse frame headers
1411 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1414 if (c->single_file) {
1415 if (os->single_file_name)
1416 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1418 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1420 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1422 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1423 set_http_options(&opts, c);
1424 if (!c->single_file) {
1425 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1427 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1429 ctx->url = av_strdup(filename);
1430 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1432 av_dict_free(&opts);
1435 os->init_start_pos = 0;
1437 av_dict_copy(&opts, c->format_options, 0);
1438 if (!as->seg_duration)
1439 as->seg_duration = c->seg_duration;
1440 if (!as->frag_duration)
1441 as->frag_duration = c->frag_duration;
1442 if (as->frag_type < 0)
1443 as->frag_type = c->frag_type;
1444 os->seg_duration = as->seg_duration;
1445 os->frag_duration = as->frag_duration;
1446 os->frag_type = as->frag_type;
1448 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1449 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1450 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1452 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1453 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1454 return AVERROR(EINVAL);
1456 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1457 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1458 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1459 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1462 if (os->segment_type == SEGMENT_TYPE_MP4) {
1464 // skip_sidx : Reduce bitrate overhead
1465 // skip_trailer : Avoids growing memory usage with time
1466 av_dict_set(&opts, "movflags", "dash+delay_moov+skip_sidx+skip_trailer", 0);
1469 av_dict_set(&opts, "movflags", "dash+delay_moov+global_sidx+skip_trailer", 0);
1471 av_dict_set(&opts, "movflags", "dash+delay_moov+skip_trailer", 0);
1473 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1474 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1476 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1477 if (os->frag_type == FRAG_TYPE_DURATION)
1478 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1480 av_dict_set(&opts, "write_prft", "wallclock", 0);
1482 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1483 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1484 av_dict_set_int(&opts, "dash", 1, 0);
1485 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1486 av_dict_set_int(&opts, "live", 1, 0);
1488 ret = avformat_init_output(ctx, &opts);
1489 av_dict_free(&opts);
1493 avio_flush(ctx->pb);
1495 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1497 s->streams[i]->time_base = st->time_base;
1498 // If the muxer wants to shift timestamps, request to have them shifted
1499 // already before being handed to this muxer, so we don't have mismatches
1500 // between the MPD and the actual segments.
1501 s->avoid_negative_ts = ctx->avoid_negative_ts;
1502 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1503 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1504 if (avg_frame_rate.num > 0) {
1505 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1506 as->min_frame_rate = avg_frame_rate;
1507 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1508 as->max_frame_rate = avg_frame_rate;
1510 as->ambiguous_frame_rate = 1;
1515 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1516 sizeof(os->codec_str));
1517 os->first_pts = AV_NOPTS_VALUE;
1518 os->max_pts = AV_NOPTS_VALUE;
1519 os->last_dts = AV_NOPTS_VALUE;
1520 os->segment_index = 1;
1522 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1523 c->nr_of_streams_to_flush++;
1526 if (!c->has_video && c->seg_duration <= 0) {
1527 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1528 return AVERROR(EINVAL);
1530 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1531 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1533 c->nr_of_streams_flushed = 0;
1538 static int dash_write_header(AVFormatContext *s)
1540 DASHContext *c = s->priv_data;
1542 for (i = 0; i < s->nb_streams; i++) {
1543 OutputStream *os = &c->streams[i];
1544 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1547 // Flush init segment
1548 // Only for WebM segment, since for mp4 delay_moov is set and
1549 // the init segment is thus flushed after the first packets.
1550 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1551 (ret = flush_init_segment(s, os)) < 0)
1557 static int add_segment(OutputStream *os, const char *file,
1558 int64_t time, int64_t duration,
1559 int64_t start_pos, int64_t range_length,
1560 int64_t index_length, int next_exp_index)
1564 if (os->nb_segments >= os->segments_size) {
1565 os->segments_size = (os->segments_size + 1) * 2;
1566 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1567 os->segments_size)) < 0) {
1568 os->segments_size = 0;
1569 os->nb_segments = 0;
1573 seg = av_mallocz(sizeof(*seg));
1575 return AVERROR(ENOMEM);
1576 av_strlcpy(seg->file, file, sizeof(seg->file));
1578 seg->duration = duration;
1579 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1580 seg->duration += seg->time;
1583 seg->start_pos = start_pos;
1584 seg->range_length = range_length;
1585 seg->index_length = index_length;
1586 os->segments[os->nb_segments++] = seg;
1587 os->segment_index++;
1588 //correcting the segment index if it has fallen behind the expected value
1589 if (os->segment_index < next_exp_index) {
1590 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1591 file, os->segment_index, next_exp_index);
1592 os->segment_index = next_exp_index;
1597 static void write_styp(AVIOContext *pb)
1600 ffio_wfourcc(pb, "styp");
1601 ffio_wfourcc(pb, "msdh");
1602 avio_wb32(pb, 0); /* minor */
1603 ffio_wfourcc(pb, "msdh");
1604 ffio_wfourcc(pb, "msix");
1607 static void find_index_range(AVFormatContext *s, const char *full_path,
1608 int64_t pos, int *index_length)
1614 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1617 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1618 ff_format_io_close(s, &pb);
1621 ret = avio_read(pb, buf, 8);
1622 ff_format_io_close(s, &pb);
1625 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1627 *index_length = AV_RB32(&buf[0]);
1630 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1631 AVPacket *pkt, AVRational *frame_rate)
1633 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1635 int ret, extradata_size;
1637 if (par->extradata_size)
1640 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1641 if (!extradata_size)
1644 ret = ff_alloc_extradata(par, extradata_size);
1648 memcpy(par->extradata, extradata, extradata_size);
1650 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1655 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1656 DASHContext *c = s->priv_data;
1657 int http_base_proto = ff_is_http_proto(filename);
1659 if (http_base_proto) {
1660 AVIOContext *out = NULL;
1661 AVDictionary *http_opts = NULL;
1663 set_http_options(&http_opts, c);
1664 av_dict_set(&http_opts, "method", "DELETE", 0);
1666 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1667 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1670 av_dict_free(&http_opts);
1671 ff_format_io_close(s, &out);
1673 int res = avpriv_io_delete(filename);
1675 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1676 av_strerror(res, errbuf, sizeof(errbuf));
1677 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1682 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1684 DASHContext *c = s->priv_data;
1685 size_t dirname_len, file_len;
1686 char filename[1024];
1688 dirname_len = strlen(c->dirname);
1689 if (dirname_len >= sizeof(filename)) {
1690 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1691 (uint64_t)dirname_len, c->dirname);
1692 return AVERROR(ENAMETOOLONG);
1695 memcpy(filename, c->dirname, dirname_len);
1697 file_len = strlen(file);
1698 if ((dirname_len + file_len) >= sizeof(filename)) {
1699 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1700 (uint64_t)(dirname_len + file_len), c->dirname, file);
1701 return AVERROR(ENAMETOOLONG);
1704 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1705 dashenc_delete_file(s, filename);
1710 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1712 for (int i = 0; i < remove_count; ++i) {
1713 dashenc_delete_segment_file(s, os->segments[i]->file);
1715 // Delete the segment regardless of whether the file was successfully deleted
1716 av_free(os->segments[i]);
1719 os->nb_segments -= remove_count;
1720 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1723 static int dash_flush(AVFormatContext *s, int final, int stream)
1725 DASHContext *c = s->priv_data;
1728 const char *proto = avio_find_protocol_name(s->url);
1729 int use_rename = proto && !strcmp(proto, "file");
1731 int cur_flush_segment_index = 0, next_exp_index = -1;
1733 cur_flush_segment_index = c->streams[stream].segment_index;
1735 //finding the next segment's expected index, based on the current pts value
1736 if (c->use_template && !c->use_timeline && c->index_correction &&
1737 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1738 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1739 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1740 c->streams[stream].first_pts,
1741 s->streams[stream]->time_base,
1743 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1747 for (i = 0; i < s->nb_streams; i++) {
1748 OutputStream *os = &c->streams[i];
1749 AVStream *st = s->streams[i];
1750 int range_length, index_length = 0;
1752 if (!os->packets_written)
1755 // Flush the single stream that got a keyframe right now.
1756 // Flush all audio streams as well, in sync with video keyframes,
1757 // but not the other video streams.
1758 if (stream >= 0 && i != stream) {
1759 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1760 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1762 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1764 // Make sure we don't flush audio streams multiple times, when
1765 // all video streams are flushed one at a time.
1766 if (c->has_video && os->segment_index > cur_flush_segment_index)
1770 if (!c->single_file) {
1771 if (os->segment_type == SEGMENT_TYPE_MP4 && !os->written_len)
1772 write_styp(os->ctx->pb);
1774 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1777 ret = flush_dynbuf(c, os, &range_length);
1780 os->packets_written = 0;
1782 if (c->single_file) {
1783 find_index_range(s, os->full_path, os->pos, &index_length);
1785 dashenc_io_close(s, &os->out, os->temp_path);
1788 ret = avpriv_io_move(os->temp_path, os->full_path);
1794 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1798 if (!os->muxer_overhead)
1799 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1801 av_rescale_q(os->max_pts - os->start_pts,
1802 st->time_base, AV_TIME_BASE_Q);
1803 os->total_pkt_size = 0;
1804 os->total_pkt_duration = 0;
1806 if (!os->bit_rate) {
1807 // calculate average bitrate of first segment
1808 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1812 os->bit_rate = bitrate;
1814 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1815 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1817 os->pos += range_length;
1820 if (c->window_size) {
1821 for (i = 0; i < s->nb_streams; i++) {
1822 OutputStream *os = &c->streams[i];
1823 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1824 if (remove_count > 0)
1825 dashenc_delete_media_segments(s, os, remove_count);
1830 for (i = 0; i < s->nb_streams; i++) {
1831 OutputStream *os = &c->streams[i];
1832 if (os->ctx && os->ctx_inited) {
1833 int64_t file_size = avio_tell(os->ctx->pb);
1834 av_write_trailer(os->ctx);
1835 if (c->global_sidx) {
1836 int j, start_index, start_number;
1837 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1838 get_start_index_number(os, c, &start_index, &start_number);
1839 if (start_index >= os->nb_segments ||
1840 os->segment_type != SEGMENT_TYPE_MP4)
1842 os->init_range_length += sidx_size;
1843 for (j = start_index; j < os->nb_segments; j++) {
1844 Segment *seg = os->segments[j];
1845 seg->start_pos += sidx_size;
1853 if (c->has_video && !final) {
1854 c->nr_of_streams_flushed++;
1855 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1858 c->nr_of_streams_flushed = 0;
1860 ret = write_manifest(s, final);
1865 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
1867 DASHContext *c = s->priv_data;
1868 AVStream *st = s->streams[pkt->stream_index];
1869 OutputStream *os = &c->streams[pkt->stream_index];
1870 AdaptationSet *as = &c->as[os->as_idx - 1];
1871 int64_t seg_end_duration, elapsed_duration;
1874 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
1878 // Fill in a heuristic guess of the packet duration, if none is available.
1879 // The mp4 muxer will do something similar (for the last packet in a fragment)
1880 // if nothing is set (setting it for the other packets doesn't hurt).
1881 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
1882 // invoke its heuristic (this doesn't have to be identical to that algorithm),
1883 // so that we know the exact timestamps of fragments.
1884 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
1885 pkt->duration = pkt->dts - os->last_dts;
1886 os->last_dts = pkt->dts;
1888 // If forcing the stream to start at 0, the mp4 muxer will set the start
1889 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
1890 if (os->first_pts == AV_NOPTS_VALUE &&
1891 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
1892 pkt->pts -= pkt->dts;
1896 if (os->first_pts == AV_NOPTS_VALUE) {
1898 AVProducerReferenceTime *prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT,
1900 if (prft && side_data_size == sizeof(AVProducerReferenceTime) && !prft->flags)
1901 os->producer_reference_time = prft->wallclock;
1902 os->first_pts = pkt->pts;
1904 os->last_pts = pkt->pts;
1906 if (!c->availability_start_time[0]) {
1907 int64_t start_time_us = av_gettime();
1908 c->start_time_s = start_time_us / 1000000;
1909 format_date(c->availability_start_time,
1910 sizeof(c->availability_start_time), start_time_us);
1913 if (!os->packets_written)
1914 os->availability_time_offset = 0;
1916 if (!os->availability_time_offset &&
1917 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
1918 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
1919 int64_t frame_duration = 0;
1921 switch (os->frag_type) {
1922 case FRAG_TYPE_DURATION:
1923 frame_duration = os->frag_duration;
1925 case FRAG_TYPE_EVERY_FRAME:
1926 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
1930 os->availability_time_offset = ((double) os->seg_duration -
1931 frame_duration) / AV_TIME_BASE;
1932 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
1935 if (c->use_template && !c->use_timeline) {
1936 elapsed_duration = pkt->pts - os->first_pts;
1937 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
1939 elapsed_duration = pkt->pts - os->start_pts;
1940 seg_end_duration = os->seg_duration;
1943 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
1944 av_compare_ts(elapsed_duration, st->time_base,
1945 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
1946 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1947 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
1950 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
1954 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
1955 if (c->last_duration < os->last_duration*9/10 ||
1956 c->last_duration > os->last_duration*11/10) {
1957 av_log(s, AV_LOG_WARNING,
1958 "Segment durations differ too much, enable use_timeline "
1959 "and use_template, or keep a stricter keyframe interval\n");
1964 if (c->write_prft && os->producer_reference_time && !os->producer_reference_time_str[0])
1965 format_date(os->producer_reference_time_str,
1966 sizeof(os->producer_reference_time_str),
1967 os->producer_reference_time);
1969 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
1973 if (!os->packets_written) {
1974 // If we wrote a previous segment, adjust the start time of the segment
1975 // to the end of the previous one (which is the same as the mp4 muxer
1976 // does). This avoids gaps in the timeline.
1977 if (os->max_pts != AV_NOPTS_VALUE)
1978 os->start_pts = os->max_pts;
1980 os->start_pts = pkt->pts;
1982 if (os->max_pts == AV_NOPTS_VALUE)
1983 os->max_pts = pkt->pts + pkt->duration;
1985 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
1987 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1988 os->frag_type == FRAG_TYPE_PFRAMES &&
1989 os->packets_written) {
1993 av_assert0(os->parser);
1994 av_parser_parse2(os->parser, os->parser_avctx,
1995 &data, &size, pkt->data, pkt->size,
1996 pkt->pts, pkt->dts, pkt->pos);
1998 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
1999 st->codecpar->video_delay &&
2000 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2001 pkt->flags & AV_PKT_FLAG_KEY) {
2002 ret = av_write_frame(os->ctx, NULL);
2006 if (!os->availability_time_offset) {
2007 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2009 os->availability_time_offset = ((double) os->seg_duration -
2010 frag_duration) / AV_TIME_BASE;
2011 as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2016 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size) {
2017 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2018 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2021 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2024 os->packets_written++;
2025 os->total_pkt_size += pkt->size;
2026 os->total_pkt_duration += pkt->duration;
2027 os->last_flags = pkt->flags;
2029 if (!os->init_range_length)
2030 flush_init_segment(s, os);
2032 //open the output context when the first frame of a segment is ready
2033 if (!c->single_file && os->packets_written == 1) {
2034 AVDictionary *opts = NULL;
2035 const char *proto = avio_find_protocol_name(s->url);
2036 int use_rename = proto && !strcmp(proto, "file");
2037 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2038 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2039 os->media_seg_name, pkt->stream_index,
2040 os->segment_index, os->bit_rate, os->start_pts);
2041 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2043 snprintf(os->temp_path, sizeof(os->temp_path),
2044 use_rename ? "%s.tmp" : "%s", os->full_path);
2045 set_http_options(&opts, c);
2046 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2047 av_dict_free(&opts);
2049 return handle_io_open_error(s, ret, os->temp_path);
2052 char *prefetch_url = use_rename ? NULL : os->filename;
2053 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2057 //write out the data immediately in streaming mode
2058 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2060 uint8_t *buf = NULL;
2061 if (!os->written_len)
2062 write_styp(os->ctx->pb);
2063 avio_flush(os->ctx->pb);
2064 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2066 avio_write(os->out, buf + os->written_len, len - os->written_len);
2067 avio_flush(os->out);
2069 os->written_len = len;
2075 static int dash_write_trailer(AVFormatContext *s)
2077 DASHContext *c = s->priv_data;
2080 if (s->nb_streams > 0) {
2081 OutputStream *os = &c->streams[0];
2082 // If no segments have been written so far, try to do a crude
2083 // guess of the segment duration
2084 if (!c->last_duration)
2085 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2086 s->streams[0]->time_base,
2088 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2089 s->streams[0]->time_base,
2092 dash_flush(s, 1, -1);
2094 if (c->remove_at_exit) {
2095 for (i = 0; i < s->nb_streams; ++i) {
2096 OutputStream *os = &c->streams[i];
2097 dashenc_delete_media_segments(s, os, os->nb_segments);
2098 dashenc_delete_segment_file(s, os->initfile);
2099 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2100 char filename[1024];
2101 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2102 dashenc_delete_file(s, filename);
2105 dashenc_delete_file(s, s->url);
2107 if (c->hls_playlist && c->master_playlist_created) {
2108 char filename[1024];
2109 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2110 dashenc_delete_file(s, filename);
2117 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2119 DASHContext *c = s->priv_data;
2120 OutputStream *os = &c->streams[avpkt->stream_index];
2121 AVFormatContext *oc = os->ctx;
2122 if (oc->oformat->check_bitstream) {
2124 AVPacket pkt = *avpkt;
2125 pkt.stream_index = 0;
2126 ret = oc->oformat->check_bitstream(oc, &pkt);
2128 AVStream *st = s->streams[avpkt->stream_index];
2129 AVStream *ost = oc->streams[0];
2130 st->internal->bsfcs = ost->internal->bsfcs;
2131 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2132 ost->internal->bsfcs = NULL;
2133 ost->internal->nb_bsfcs = 0;
2140 #define OFFSET(x) offsetof(DASHContext, x)
2141 #define E AV_OPT_FLAG_ENCODING_PARAM
2142 static const AVOption options[] = {
2143 { "adaptation_sets", "Adaptation sets. Syntax: id=0,streams=0,1,2 id=1,streams=3,4 and so on", OFFSET(adaptation_sets), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
2144 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2145 { "extra_window_size", "number of segments kept outside of the manifest before removing from disk", OFFSET(extra_window_size), AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX, E },
2146 #if FF_API_DASH_MIN_SEG_DURATION
2147 { "min_seg_duration", "minimum segment duration (in microseconds) (will be deprecated)", OFFSET(min_seg_duration), AV_OPT_TYPE_INT, { .i64 = 5000000 }, 0, INT_MAX, E },
2149 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2150 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2151 { "frag_type", "set type of interval for fragments", OFFSET(frag_type), AV_OPT_TYPE_INT, {.i64 = FRAG_TYPE_NONE }, 0, FRAG_TYPE_NB - 1, E, "frag_type"},
2152 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2153 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2154 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2155 { "pframes", "fragment at keyframes and following P-Frame reordering (Video only, experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_PFRAMES }, 0, UINT_MAX, E, "frag_type"},
2156 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2157 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2158 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2159 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2160 { "single_file_name", "DASH-templated name to be used for baseURL. Implies storing all segments in one file, accessed using byte ranges", OFFSET(single_file_name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
2161 { "init_seg_name", "DASH-templated name to used for the initialization segment", OFFSET(init_seg_name), AV_OPT_TYPE_STRING, {.str = "init-stream$RepresentationID$.$ext$"}, 0, 0, E },
2162 { "media_seg_name", "DASH-templated name to used for the media segments", OFFSET(media_seg_name), AV_OPT_TYPE_STRING, {.str = "chunk-stream$RepresentationID$-$Number%05d$.$ext$"}, 0, 0, E },
2163 { "utc_timing_url", "URL of the page that will return the UTC timestamp in ISO format", OFFSET(utc_timing_url), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E },
2164 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2165 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2166 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2167 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2168 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2169 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2170 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2171 { "format_options","set list of options for the container format (mp4/webm) used for dash", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E},
2172 { "global_sidx", "Write global SIDX atom. Applicable only for single file, mp4 output, non-streaming mode", OFFSET(global_sidx), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2173 { "dash_segment_type", "set dash segment files type", OFFSET(segment_type_option), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_AUTO }, 0, SEGMENT_TYPE_NB - 1, E, "segment_type"},
2174 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2175 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2176 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2177 { "ignore_io_errors", "Ignore IO errors during open and write. Useful for long-duration runs with network output", OFFSET(ignore_io_errors), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2178 { "lhls", "Enable Low-latency HLS(Experimental). Adds #EXT-X-PREFETCH tag with current segment's URI", OFFSET(lhls), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2179 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2180 { "master_m3u8_publish_rate", "Publish master playlist every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E},
2181 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2185 static const AVClass dash_class = {
2186 .class_name = "dash muxer",
2187 .item_name = av_default_item_name,
2189 .version = LIBAVUTIL_VERSION_INT,
2192 AVOutputFormat ff_dash_muxer = {
2194 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2195 .extensions = "mpd",
2196 .priv_data_size = sizeof(DASHContext),
2197 .audio_codec = AV_CODEC_ID_AAC,
2198 .video_codec = AV_CODEC_ID_H264,
2199 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2201 .write_header = dash_write_header,
2202 .write_packet = dash_write_packet,
2203 .write_trailer = dash_write_trailer,
2204 .deinit = dash_free,
2205 .check_bitstream = dash_check_bitstream,
2206 .priv_class = &dash_class,