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,
68 typedef struct Segment {
71 int range_length, index_length;
73 double prog_date_time;
78 typedef struct AdaptationSet {
82 int64_t frag_duration;
84 enum AVMediaType media_type;
85 AVDictionary *metadata;
86 AVRational min_frame_rate, max_frame_rate;
87 int ambiguous_frame_rate;
90 typedef struct OutputStream {
92 int ctx_inited, as_idx;
96 int64_t init_start_pos, pos;
97 int init_range_length;
98 int nb_segments, segments_size, segment_index;
100 int64_t frag_duration;
101 int64_t last_duration;
103 int64_t first_pts, start_pts, max_pts;
104 int64_t last_dts, last_pts;
106 SegmentType segment_type; /* segment type selected for this particular stream */
107 const char *format_name;
108 const char *extension_name;
109 const char *single_file_name; /* file names selected for this particular stream */
110 const char *init_seg_name;
111 const char *media_seg_name;
116 char full_path[1024];
117 char temp_path[1024];
118 double availability_time_offset;
124 typedef struct DASHContext {
125 const AVClass *class; /* Class for private options. */
126 char *adaptation_sets;
130 int extra_window_size;
131 #if FF_API_DASH_MIN_SEG_DURATION
132 int min_seg_duration;
134 int64_t seg_duration;
135 int64_t frag_duration;
140 OutputStream *streams;
142 int64_t last_duration;
143 int64_t total_duration;
144 char availability_start_time[100];
147 const char *single_file_name; /* file names as specified in options */
148 const char *init_seg_name;
149 const char *media_seg_name;
150 const char *utc_timing_url;
152 const char *user_agent;
155 int master_playlist_created;
156 AVIOContext *mpd_out;
157 AVIOContext *m3u8_out;
160 int index_correction;
161 AVDictionary *format_options;
163 SegmentType segment_type_option; /* segment type as specified in options */
164 int ignore_io_errors;
166 int master_publish_rate;
167 int nr_of_streams_to_flush;
168 int nr_of_streams_flushed;
172 static struct codec_string {
176 { AV_CODEC_ID_VP8, "vp8" },
177 { AV_CODEC_ID_VP9, "vp9" },
178 { AV_CODEC_ID_VORBIS, "vorbis" },
179 { AV_CODEC_ID_OPUS, "opus" },
180 { AV_CODEC_ID_FLAC, "flac" },
184 static struct format_string {
185 SegmentType segment_type;
188 { SEGMENT_TYPE_AUTO, "auto" },
189 { SEGMENT_TYPE_MP4, "mp4" },
190 { SEGMENT_TYPE_WEBM, "webm" },
194 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
195 AVDictionary **options) {
196 DASHContext *c = s->priv_data;
197 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
198 int err = AVERROR_MUXER_NOT_FOUND;
199 if (!*pb || !http_base_proto || !c->http_persistent) {
200 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
201 #if CONFIG_HTTP_PROTOCOL
203 URLContext *http_url_context = ffio_geturlcontext(*pb);
204 av_assert0(http_url_context);
205 err = ff_http_do_new_request(http_url_context, filename);
207 ff_format_io_close(s, pb);
213 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
214 DASHContext *c = s->priv_data;
215 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
220 if (!http_base_proto || !c->http_persistent) {
221 ff_format_io_close(s, pb);
222 #if CONFIG_HTTP_PROTOCOL
224 URLContext *http_url_context = ffio_geturlcontext(*pb);
225 av_assert0(http_url_context);
227 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
232 static const char *get_format_str(SegmentType segment_type) {
234 for (i = 0; i < SEGMENT_TYPE_NB; i++)
235 if (formats[i].segment_type == segment_type)
236 return formats[i].str;
240 static const char *get_extension_str(SegmentType type, int single_file)
244 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
245 case SEGMENT_TYPE_WEBM: return "webm";
246 default: return NULL;
250 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
251 DASHContext *c = s->priv_data;
252 char errbuf[AV_ERROR_MAX_STRING_SIZE];
253 av_strerror(err, errbuf, sizeof(errbuf));
254 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
255 "Unable to open %s for writing: %s\n", url, errbuf);
256 return c->ignore_io_errors ? 0 : err;
259 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
261 if (segment_type == SEGMENT_TYPE_AUTO) {
262 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
263 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
264 segment_type = SEGMENT_TYPE_WEBM;
266 segment_type = SEGMENT_TYPE_MP4;
273 static int init_segment_types(AVFormatContext *s)
275 DASHContext *c = s->priv_data;
276 int has_mp4_streams = 0;
277 for (int i = 0; i < s->nb_streams; ++i) {
278 OutputStream *os = &c->streams[i];
279 SegmentType segment_type = select_segment_type(
280 c->segment_type_option, s->streams[i]->codecpar->codec_id);
281 os->segment_type = segment_type;
282 os->format_name = get_format_str(segment_type);
283 if (!os->format_name) {
284 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
285 return AVERROR_MUXER_NOT_FOUND;
287 os->extension_name = get_extension_str(segment_type, c->single_file);
288 if (!os->extension_name) {
289 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
290 return AVERROR_MUXER_NOT_FOUND;
293 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
296 if (c->hls_playlist && !has_mp4_streams) {
297 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
304 static int check_file_extension(const char *filename, const char *extension) {
306 if (!filename || !extension)
308 dot = strrchr(filename, '.');
309 if (dot && !strcmp(dot + 1, extension))
314 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
315 AVRational *frame_rate, char *str, int size) {
317 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
319 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
320 vpcc.profile, vpcc.level, vpcc.bitdepth);
322 // Default to just vp9 in case of error while finding out profile or level
323 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
324 av_strlcpy(str, "vp9", size);
329 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
330 AVRational *frame_rate, char *str, int size)
332 const AVCodecTag *tags[2] = { NULL, NULL };
336 // common Webm codecs are not part of RFC 6381
337 for (i = 0; codecs[i].id; i++)
338 if (codecs[i].id == par->codec_id) {
339 if (codecs[i].id == AV_CODEC_ID_VP9) {
340 set_vp9_codec_str(s, par, frame_rate, str, size);
342 av_strlcpy(str, codecs[i].str, size);
347 // for codecs part of RFC 6381
348 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
349 tags[0] = ff_codec_movvideo_tags;
350 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
351 tags[0] = ff_codec_movaudio_tags;
355 tag = par->codec_tag;
357 tag = av_codec_get_tag(tags, par->codec_id);
365 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
367 tags[0] = ff_mp4_obj_type;
368 oti = av_codec_get_tag(tags, par->codec_id);
370 av_strlcatf(str, size, ".%02"PRIx32, oti);
374 if (tag == MKTAG('m', 'p', '4', 'a')) {
375 if (par->extradata_size >= 2) {
376 int aot = par->extradata[0] >> 3;
378 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
379 av_strlcatf(str, size, ".%d", aot);
381 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
382 // Unimplemented, should output ProfileLevelIndication as a decimal number
383 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
385 } else if (!strcmp(str, "avc1")) {
386 uint8_t *tmpbuf = NULL;
387 uint8_t *extradata = par->extradata;
388 int extradata_size = par->extradata_size;
391 if (extradata[0] != 1) {
393 if (avio_open_dyn_buf(&pb) < 0)
395 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
396 ffio_free_dyn_buf(&pb);
399 extradata_size = avio_close_dyn_buf(pb, &extradata);
403 if (extradata_size >= 4)
404 av_strlcatf(str, size, ".%02x%02x%02x",
405 extradata[1], extradata[2], extradata[3]);
407 } else if (!strcmp(str, "av01")) {
408 AV1SequenceParameters seq;
409 if (!par->extradata_size)
411 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
414 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
415 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
416 if (seq.color_description_present_flag)
417 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
419 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
420 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
425 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
430 return AVERROR(EINVAL);
434 av_write_frame(os->ctx, NULL);
435 avio_flush(os->ctx->pb);
437 if (!c->single_file) {
439 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
442 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
447 return avio_open_dyn_buf(&os->ctx->pb);
449 *range_length = avio_tell(os->ctx->pb) - os->pos;
454 static void set_http_options(AVDictionary **options, DASHContext *c)
457 av_dict_set(options, "method", c->method, 0);
459 av_dict_set(options, "user_agent", c->user_agent, 0);
460 if (c->http_persistent)
461 av_dict_set_int(options, "multiple_requests", 1, 0);
463 av_dict_set_int(options, "timeout", c->timeout, 0);
466 static void get_hls_playlist_name(char *playlist_name, int string_size,
467 const char *base_url, int id) {
469 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
471 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
474 static void get_start_index_number(OutputStream *os, DASHContext *c,
475 int *start_index, int *start_number) {
478 if (c->window_size) {
479 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
480 *start_number = FFMAX(os->segment_index - c->window_size, 1);
484 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
485 int representation_id, int final,
486 char *prefetch_url) {
487 DASHContext *c = s->priv_data;
488 int timescale = os->ctx->streams[0]->time_base.den;
489 char temp_filename_hls[1024];
490 char filename_hls[1024];
491 AVDictionary *http_opts = NULL;
492 int target_duration = 0;
494 const char *proto = avio_find_protocol_name(c->dirname);
495 int use_rename = proto && !strcmp(proto, "file");
496 int i, start_index, start_number;
497 double prog_date_time = 0;
499 get_start_index_number(os, c, &start_index, &start_number);
501 if (!c->hls_playlist || start_index >= os->nb_segments ||
502 os->segment_type != SEGMENT_TYPE_MP4)
505 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
506 c->dirname, representation_id);
508 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
510 set_http_options(&http_opts, c);
511 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
512 av_dict_free(&http_opts);
514 handle_io_open_error(s, ret, temp_filename_hls);
517 for (i = start_index; i < os->nb_segments; i++) {
518 Segment *seg = os->segments[i];
519 double duration = (double) seg->duration / timescale;
520 if (target_duration <= duration)
521 target_duration = lrint(duration);
524 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
525 start_number, PLAYLIST_TYPE_NONE, 0);
527 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
528 os->init_range_length, os->init_start_pos);
530 for (i = start_index; i < os->nb_segments; i++) {
531 Segment *seg = os->segments[i];
533 if (prog_date_time == 0) {
534 if (os->nb_segments == 1)
535 prog_date_time = c->start_time_s;
537 prog_date_time = seg->prog_date_time;
539 seg->prog_date_time = prog_date_time;
541 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
542 (double) seg->duration / timescale, 0,
543 seg->range_length, seg->start_pos, NULL,
544 c->single_file ? os->initfile : seg->file,
545 &prog_date_time, 0, 0, 0);
547 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
552 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
555 ff_hls_write_end_list(c->m3u8_out);
557 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
560 if (avpriv_io_move(temp_filename_hls, filename_hls) < 0) {
561 av_log(os->ctx, AV_LOG_WARNING, "renaming file %s to %s failed\n\n", temp_filename_hls, filename_hls);
565 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
567 DASHContext *c = s->priv_data;
568 int ret, range_length;
570 ret = flush_dynbuf(c, os, &range_length);
574 os->pos = os->init_range_length = range_length;
575 if (!c->single_file) {
577 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
578 dashenc_io_close(s, &os->out, filename);
583 static void dash_free(AVFormatContext *s)
585 DASHContext *c = s->priv_data;
589 for (i = 0; i < c->nb_as; i++) {
590 av_dict_free(&c->as[i].metadata);
591 av_freep(&c->as[i].descriptor);
599 for (i = 0; i < s->nb_streams; i++) {
600 OutputStream *os = &c->streams[i];
601 if (os->ctx && os->ctx->pb) {
603 ffio_free_dyn_buf(&os->ctx->pb);
605 avio_close(os->ctx->pb);
607 ff_format_io_close(s, &os->out);
608 avformat_free_context(os->ctx);
609 for (j = 0; j < os->nb_segments; j++)
610 av_free(os->segments[j]);
611 av_free(os->segments);
612 av_freep(&os->single_file_name);
613 av_freep(&os->init_seg_name);
614 av_freep(&os->media_seg_name);
616 av_freep(&c->streams);
618 ff_format_io_close(s, &c->mpd_out);
619 ff_format_io_close(s, &c->m3u8_out);
622 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
623 int representation_id, int final)
625 DASHContext *c = s->priv_data;
626 int i, start_index, start_number;
627 get_start_index_number(os, c, &start_index, &start_number);
629 if (c->use_template) {
630 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
631 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
632 if (!c->use_timeline) {
633 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
634 if (c->streaming && os->availability_time_offset)
635 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
636 os->availability_time_offset);
638 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\">\n", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
639 if (c->use_timeline) {
640 int64_t cur_time = 0;
641 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
642 for (i = start_index; i < os->nb_segments; ) {
643 Segment *seg = os->segments[i];
645 avio_printf(out, "\t\t\t\t\t\t<S ");
646 if (i == start_index || seg->time != cur_time) {
647 cur_time = seg->time;
648 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
650 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
651 while (i + repeat + 1 < os->nb_segments &&
652 os->segments[i + repeat + 1]->duration == seg->duration &&
653 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
656 avio_printf(out, "r=\"%d\" ", repeat);
657 avio_printf(out, "/>\n");
659 cur_time += (1 + repeat) * seg->duration;
661 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
663 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
664 } else if (c->single_file) {
665 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
666 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);
667 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);
668 for (i = start_index; i < os->nb_segments; i++) {
669 Segment *seg = os->segments[i];
670 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
671 if (seg->index_length)
672 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
673 avio_printf(out, "/>\n");
675 avio_printf(out, "\t\t\t\t</SegmentList>\n");
677 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);
678 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
679 for (i = start_index; i < os->nb_segments; i++) {
680 Segment *seg = os->segments[i];
681 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
683 avio_printf(out, "\t\t\t\t</SegmentList>\n");
685 if (!c->lhls || final) {
686 write_hls_media_playlist(os, s, representation_id, final, NULL);
691 static char *xmlescape(const char *str) {
692 int outlen = strlen(str)*3/2 + 6;
693 char *out = av_realloc(NULL, outlen + 1);
697 for (; *str; str++) {
698 if (pos + 6 > outlen) {
700 outlen = 2 * outlen + 6;
701 tmp = av_realloc(out, outlen + 1);
709 memcpy(&out[pos], "&", 5);
711 } else if (*str == '<') {
712 memcpy(&out[pos], "<", 4);
714 } else if (*str == '>') {
715 memcpy(&out[pos], ">", 4);
717 } else if (*str == '\'') {
718 memcpy(&out[pos], "'", 6);
720 } else if (*str == '\"') {
721 memcpy(&out[pos], """, 6);
731 static void write_time(AVIOContext *out, int64_t time)
733 int seconds = time / AV_TIME_BASE;
734 int fractions = time % AV_TIME_BASE;
735 int minutes = seconds / 60;
736 int hours = minutes / 60;
739 avio_printf(out, "PT");
741 avio_printf(out, "%dH", hours);
742 if (hours || minutes)
743 avio_printf(out, "%dM", minutes);
744 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
747 static void format_date_now(char *buf, int size)
749 struct tm *ptm, tmbuf;
750 int64_t time_us = av_gettime();
751 int64_t time_ms = time_us / 1000;
752 const time_t time_s = time_ms / 1000;
753 int millisec = time_ms - (time_s * 1000);
754 ptm = gmtime_r(&time_s, &tmbuf);
757 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
762 snprintf(buf + len, size - len, ".%03dZ", millisec);
766 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
769 DASHContext *c = s->priv_data;
770 AdaptationSet *as = &c->as[as_index];
771 AVDictionaryEntry *lang, *role;
774 avio_printf(out, "\t\t<AdaptationSet id=\"%s\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
775 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
776 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)
777 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
778 lang = av_dict_get(as->metadata, "language", NULL, 0);
780 avio_printf(out, " lang=\"%s\"", lang->value);
781 avio_printf(out, ">\n");
783 role = av_dict_get(as->metadata, "role", NULL, 0);
785 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
787 avio_printf(out, "\t\t\t%s\n", as->descriptor);
788 for (i = 0; i < s->nb_streams; i++) {
789 OutputStream *os = &c->streams[i];
790 char bandwidth_str[64] = {'\0'};
792 if (os->as_idx - 1 != as_index)
795 if (os->bit_rate > 0)
796 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
799 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
800 AVStream *st = s->streams[i];
801 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
802 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
803 if (st->avg_frame_rate.num)
804 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
805 avio_printf(out, ">\n");
807 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
808 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
809 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
810 s->streams[i]->codecpar->channels);
812 output_segment_list(os, out, s, i, final);
813 avio_printf(out, "\t\t\t</Representation>\n");
815 avio_printf(out, "\t\t</AdaptationSet>\n");
820 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
822 DASHContext *c = s->priv_data;
824 void *mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
826 return AVERROR(ENOMEM);
830 *as = &c->as[c->nb_as - 1];
831 memset(*as, 0, sizeof(**as));
832 (*as)->media_type = type;
833 (*as)->frag_type = -1;
838 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
840 DASHContext *c = s->priv_data;
841 AdaptationSet *as = &c->as[as_idx - 1];
842 OutputStream *os = &c->streams[i];
844 if (as->media_type != s->streams[i]->codecpar->codec_type) {
845 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
846 return AVERROR(EINVAL);
847 } else if (os->as_idx) {
848 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
849 return AVERROR(EINVAL);
856 static int parse_adaptation_sets(AVFormatContext *s)
858 DASHContext *c = s->priv_data;
859 const char *p = c->adaptation_sets;
860 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
864 // default: one AdaptationSet for each stream
866 for (i = 0; i < s->nb_streams; i++) {
867 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
869 snprintf(as->id, sizeof(as->id), "%d", i);
871 c->streams[i].as_idx = c->nb_as;
876 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
877 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
878 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2 and so on
879 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
880 // descriptor_str should be a self-closing xml tag.
881 // seg_duration and frag_duration have the same syntax as the global options of
882 // the same name, and the former have precedence over them if set.
888 } else if (state == new_set && av_strstart(p, "id=", &p)) {
890 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
894 snprintf(as->id, sizeof(as->id), "%.*s", n, p);
899 state = parse_default;
900 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
901 state = parse_seg_duration;
902 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
903 state = parse_frag_duration;
904 } else if (state == parse_seg_duration || state == parse_frag_duration) {
909 snprintf(str, sizeof(str), "%.*s", n, p);
914 ret = av_parse_time(&usecs, str, 1);
916 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
920 if (state == parse_seg_duration)
921 as->seg_duration = usecs;
923 as->frag_duration = usecs;
924 state = parse_default;
925 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
929 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
934 if (!strcmp(type_str, "duration"))
935 as->frag_type = FRAG_TYPE_DURATION;
936 else if (!strcmp(type_str, "every_frame"))
937 as->frag_type = FRAG_TYPE_EVERY_FRAME;
938 else if (!strcmp(type_str, "none"))
939 as->frag_type = FRAG_TYPE_NONE;
941 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
944 state = parse_default;
945 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
946 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
948 as->descriptor = av_strndup(p, n);
950 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
951 return AVERROR(EINVAL);
956 state = parse_default;
957 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
958 state = parsing_streams;
959 } else if (state == parsing_streams) {
960 AdaptationSet *as = &c->as[c->nb_as - 1];
961 char idx_str[8], *end_str;
963 n = strcspn(p, " ,");
964 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
967 // if value is "a" or "v", map all streams of that type
968 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
969 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
970 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
972 for (i = 0; i < s->nb_streams; i++) {
973 if (s->streams[i]->codecpar->codec_type != type)
976 as->media_type = s->streams[i]->codecpar->codec_type;
978 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
981 } else { // select single stream
982 i = strtol(idx_str, &end_str, 10);
983 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
984 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
985 return AVERROR(EINVAL);
987 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
989 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
990 as->media_type = s->streams[i]->codecpar->codec_type;
993 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1002 return AVERROR(EINVAL);
1007 // check for unassigned streams
1008 for (i = 0; i < s->nb_streams; i++) {
1009 OutputStream *os = &c->streams[i];
1011 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1012 return AVERROR(EINVAL);
1018 static int write_manifest(AVFormatContext *s, int final)
1020 DASHContext *c = s->priv_data;
1022 char temp_filename[1024];
1024 const char *proto = avio_find_protocol_name(s->url);
1025 int use_rename = proto && !strcmp(proto, "file");
1026 static unsigned int warned_non_file = 0;
1027 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1028 AVDictionary *opts = NULL;
1030 if (!use_rename && !warned_non_file++)
1031 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1033 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1034 set_http_options(&opts, c);
1035 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1036 av_dict_free(&opts);
1038 return handle_io_open_error(s, ret, temp_filename);
1041 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1042 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1043 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1044 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1045 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1046 "\tprofiles=\"urn:mpeg:dash:profile:isoff-live:2011\"\n"
1047 "\ttype=\"%s\"\n", final ? "static" : "dynamic");
1049 avio_printf(out, "\tmediaPresentationDuration=\"");
1050 write_time(out, c->total_duration);
1051 avio_printf(out, "\"\n");
1053 int64_t update_period = c->last_duration / AV_TIME_BASE;
1055 if (c->use_template && !c->use_timeline)
1056 update_period = 500;
1057 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1058 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1059 if (c->availability_start_time[0])
1060 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1061 format_date_now(now_str, sizeof(now_str));
1063 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1064 if (c->window_size && c->use_template) {
1065 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1066 write_time(out, c->last_duration * c->window_size);
1067 avio_printf(out, "\"\n");
1070 avio_printf(out, "\tminBufferTime=\"");
1071 write_time(out, c->last_duration * 2);
1072 avio_printf(out, "\">\n");
1073 avio_printf(out, "\t<ProgramInformation>\n");
1075 char *escaped = xmlescape(title->value);
1076 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1079 avio_printf(out, "\t</ProgramInformation>\n");
1081 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1082 OutputStream *os = &c->streams[0];
1083 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1084 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1085 avio_printf(out, "\t<Period id=\"0\" start=\"");
1086 write_time(out, start_time);
1087 avio_printf(out, "\">\n");
1089 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1092 for (i = 0; i < c->nb_as; i++) {
1093 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1096 avio_printf(out, "\t</Period>\n");
1098 if (c->utc_timing_url)
1099 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1101 avio_printf(out, "</MPD>\n");
1103 dashenc_io_close(s, &c->mpd_out, temp_filename);
1106 if ((ret = avpriv_io_move(temp_filename, s->url)) < 0)
1110 if (c->hls_playlist) {
1111 char filename_hls[1024];
1112 const char *audio_group = "A1";
1113 char audio_codec_str[128] = "\0";
1115 int max_audio_bitrate = 0;
1117 // Publish master playlist only the configured rate
1118 if (c->master_playlist_created && (!c->master_publish_rate ||
1119 c->streams[0].segment_index % c->master_publish_rate))
1123 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1125 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1127 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1129 set_http_options(&opts, c);
1130 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1131 av_dict_free(&opts);
1133 return handle_io_open_error(s, ret, temp_filename);
1136 ff_hls_write_playlist_version(c->m3u8_out, 7);
1138 for (i = 0; i < s->nb_streams; i++) {
1139 char playlist_file[64];
1140 AVStream *st = s->streams[i];
1141 OutputStream *os = &c->streams[i];
1142 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1144 if (os->segment_type != SEGMENT_TYPE_MP4)
1146 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1147 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1148 playlist_file, NULL, i, is_default);
1149 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1150 os->muxer_overhead, max_audio_bitrate);
1151 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1152 if (strlen(audio_codec_str))
1153 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1154 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1159 for (i = 0; i < s->nb_streams; i++) {
1160 char playlist_file[64];
1161 char codec_str[128];
1162 AVStream *st = s->streams[i];
1163 OutputStream *os = &c->streams[i];
1164 char *agroup = NULL;
1165 char *codec_str_ptr = NULL;
1166 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1167 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1169 if (os->segment_type != SEGMENT_TYPE_MP4)
1171 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1172 if (max_audio_bitrate) {
1173 agroup = (char *)audio_group;
1174 stream_bitrate += max_audio_bitrate;
1175 av_strlcat(codec_str, ",", sizeof(codec_str));
1176 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1178 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1179 codec_str_ptr = codec_str;
1181 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1182 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1183 playlist_file, agroup,
1184 codec_str_ptr, NULL);
1186 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1188 if ((ret = avpriv_io_move(temp_filename, filename_hls)) < 0)
1190 c->master_playlist_created = 1;
1196 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1198 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1200 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1204 static int dash_init(AVFormatContext *s)
1206 DASHContext *c = s->priv_data;
1209 char basename[1024];
1211 c->nr_of_streams_to_flush = 0;
1212 if (c->single_file_name)
1215 c->use_template = 0;
1217 #if FF_API_DASH_MIN_SEG_DURATION
1218 if (c->min_seg_duration != 5000000) {
1219 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1220 c->seg_duration = c->min_seg_duration;
1223 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1224 av_log(s, AV_LOG_ERROR,
1225 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1226 return AVERROR_EXPERIMENTAL;
1229 if (c->lhls && !c->streaming) {
1230 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1234 if (c->lhls && !c->hls_playlist) {
1235 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1239 if (c->global_sidx && !c->single_file) {
1240 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1244 if (c->global_sidx && c->streaming) {
1245 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1248 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1249 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1250 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1253 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1254 ptr = strrchr(c->dirname, '/');
1256 av_strlcpy(basename, &ptr[1], sizeof(basename));
1259 c->dirname[0] = '\0';
1260 av_strlcpy(basename, s->url, sizeof(basename));
1263 ptr = strrchr(basename, '.');
1267 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1269 return AVERROR(ENOMEM);
1271 if ((ret = parse_adaptation_sets(s)) < 0)
1274 if ((ret = init_segment_types(s)) < 0)
1277 for (i = 0; i < s->nb_streams; i++) {
1278 OutputStream *os = &c->streams[i];
1279 AdaptationSet *as = &c->as[os->as_idx - 1];
1280 AVFormatContext *ctx;
1282 AVDictionary *opts = NULL;
1283 char filename[1024];
1285 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1286 if (!os->bit_rate) {
1287 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1288 AV_LOG_ERROR : AV_LOG_WARNING;
1289 av_log(s, level, "No bit rate set for stream %d\n", i);
1290 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1291 return AVERROR(EINVAL);
1294 // copy AdaptationSet language and role from stream metadata
1295 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1296 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1298 if (c->init_seg_name) {
1299 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1300 if (!os->init_seg_name)
1301 return AVERROR(ENOMEM);
1303 if (c->media_seg_name) {
1304 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1305 if (!os->media_seg_name)
1306 return AVERROR(ENOMEM);
1308 if (c->single_file_name) {
1309 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1310 if (!os->single_file_name)
1311 return AVERROR(ENOMEM);
1314 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1315 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1316 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1317 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1318 av_log(s, AV_LOG_WARNING,
1319 "One or many segment file names doesn't end with .webm. "
1320 "Override -init_seg_name and/or -media_seg_name and/or "
1321 "-single_file_name to end with the extension .webm\n");
1324 // Streaming not supported as matroskaenc buffers internally before writing the output
1325 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1330 os->ctx = ctx = avformat_alloc_context();
1332 return AVERROR(ENOMEM);
1334 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1336 return AVERROR_MUXER_NOT_FOUND;
1337 ctx->interrupt_callback = s->interrupt_callback;
1338 ctx->opaque = s->opaque;
1339 ctx->io_close = s->io_close;
1340 ctx->io_open = s->io_open;
1341 ctx->strict_std_compliance = s->strict_std_compliance;
1343 if (!(st = avformat_new_stream(ctx, NULL)))
1344 return AVERROR(ENOMEM);
1345 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1346 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1347 st->time_base = s->streams[i]->time_base;
1348 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1349 ctx->avoid_negative_ts = s->avoid_negative_ts;
1350 ctx->flags = s->flags;
1352 if (c->single_file) {
1353 if (os->single_file_name)
1354 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1356 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1358 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1360 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1361 set_http_options(&opts, c);
1362 if (!c->single_file) {
1363 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1365 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1367 ctx->url = av_strdup(filename);
1368 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1370 av_dict_free(&opts);
1373 os->init_start_pos = 0;
1375 av_dict_copy(&opts, c->format_options, 0);
1376 if (!as->seg_duration)
1377 as->seg_duration = c->seg_duration;
1378 if (!as->frag_duration)
1379 as->frag_duration = c->frag_duration;
1380 if (as->frag_type < 0)
1381 as->frag_type = c->frag_type;
1382 os->seg_duration = as->seg_duration;
1383 os->frag_duration = as->frag_duration;
1384 os->frag_type = as->frag_type;
1386 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1387 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1388 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1390 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1391 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1392 return AVERROR(EINVAL);
1395 if (os->segment_type == SEGMENT_TYPE_MP4) {
1397 // skip_sidx : Reduce bitrate overhead
1398 // skip_trailer : Avoids growing memory usage with time
1399 av_dict_set(&opts, "movflags", "dash+delay_moov+skip_sidx+skip_trailer", 0);
1402 av_dict_set(&opts, "movflags", "dash+delay_moov+global_sidx+skip_trailer", 0);
1404 av_dict_set(&opts, "movflags", "dash+delay_moov+skip_trailer", 0);
1406 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1407 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1409 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1410 if (os->frag_type == FRAG_TYPE_DURATION)
1411 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1413 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1414 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1415 av_dict_set_int(&opts, "dash", 1, 0);
1416 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1417 av_dict_set_int(&opts, "live", 1, 0);
1419 ret = avformat_init_output(ctx, &opts);
1420 av_dict_free(&opts);
1424 avio_flush(ctx->pb);
1426 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1428 s->streams[i]->time_base = st->time_base;
1429 // If the muxer wants to shift timestamps, request to have them shifted
1430 // already before being handed to this muxer, so we don't have mismatches
1431 // between the MPD and the actual segments.
1432 s->avoid_negative_ts = ctx->avoid_negative_ts;
1433 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1434 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1435 if (avg_frame_rate.num > 0) {
1436 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1437 as->min_frame_rate = avg_frame_rate;
1438 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1439 as->max_frame_rate = avg_frame_rate;
1441 as->ambiguous_frame_rate = 1;
1446 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1447 sizeof(os->codec_str));
1448 os->first_pts = AV_NOPTS_VALUE;
1449 os->max_pts = AV_NOPTS_VALUE;
1450 os->last_dts = AV_NOPTS_VALUE;
1451 os->segment_index = 1;
1453 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1454 c->nr_of_streams_to_flush++;
1457 if (!c->has_video && c->seg_duration <= 0) {
1458 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1459 return AVERROR(EINVAL);
1462 c->nr_of_streams_flushed = 0;
1467 static int dash_write_header(AVFormatContext *s)
1469 DASHContext *c = s->priv_data;
1471 for (i = 0; i < s->nb_streams; i++) {
1472 OutputStream *os = &c->streams[i];
1473 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1476 // Flush init segment
1477 // Only for WebM segment, since for mp4 delay_moov is set and
1478 // the init segment is thus flushed after the first packets.
1479 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1480 (ret = flush_init_segment(s, os)) < 0)
1486 static int add_segment(OutputStream *os, const char *file,
1487 int64_t time, int64_t duration,
1488 int64_t start_pos, int64_t range_length,
1489 int64_t index_length, int next_exp_index)
1493 if (os->nb_segments >= os->segments_size) {
1494 os->segments_size = (os->segments_size + 1) * 2;
1495 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1496 os->segments_size)) < 0) {
1497 os->segments_size = 0;
1498 os->nb_segments = 0;
1502 seg = av_mallocz(sizeof(*seg));
1504 return AVERROR(ENOMEM);
1505 av_strlcpy(seg->file, file, sizeof(seg->file));
1507 seg->duration = duration;
1508 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1509 seg->duration += seg->time;
1512 seg->start_pos = start_pos;
1513 seg->range_length = range_length;
1514 seg->index_length = index_length;
1515 os->segments[os->nb_segments++] = seg;
1516 os->segment_index++;
1517 //correcting the segment index if it has fallen behind the expected value
1518 if (os->segment_index < next_exp_index) {
1519 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1520 file, os->segment_index, next_exp_index);
1521 os->segment_index = next_exp_index;
1526 static void write_styp(AVIOContext *pb)
1529 ffio_wfourcc(pb, "styp");
1530 ffio_wfourcc(pb, "msdh");
1531 avio_wb32(pb, 0); /* minor */
1532 ffio_wfourcc(pb, "msdh");
1533 ffio_wfourcc(pb, "msix");
1536 static void find_index_range(AVFormatContext *s, const char *full_path,
1537 int64_t pos, int *index_length)
1543 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1546 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1547 ff_format_io_close(s, &pb);
1550 ret = avio_read(pb, buf, 8);
1551 ff_format_io_close(s, &pb);
1554 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1556 *index_length = AV_RB32(&buf[0]);
1559 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1560 AVPacket *pkt, AVRational *frame_rate)
1562 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1564 int ret, extradata_size;
1566 if (par->extradata_size)
1569 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1570 if (!extradata_size)
1573 ret = ff_alloc_extradata(par, extradata_size);
1577 memcpy(par->extradata, extradata, extradata_size);
1579 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1584 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1585 DASHContext *c = s->priv_data;
1586 int http_base_proto = ff_is_http_proto(filename);
1588 if (http_base_proto) {
1589 AVIOContext *out = NULL;
1590 AVDictionary *http_opts = NULL;
1592 set_http_options(&http_opts, c);
1593 av_dict_set(&http_opts, "method", "DELETE", 0);
1595 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1596 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1599 av_dict_free(&http_opts);
1600 ff_format_io_close(s, &out);
1602 int res = avpriv_io_delete(filename);
1604 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1605 av_strerror(res, errbuf, sizeof(errbuf));
1606 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1611 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1613 DASHContext *c = s->priv_data;
1614 size_t dirname_len, file_len;
1615 char filename[1024];
1617 dirname_len = strlen(c->dirname);
1618 if (dirname_len >= sizeof(filename)) {
1619 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1620 (uint64_t)dirname_len, c->dirname);
1621 return AVERROR(ENAMETOOLONG);
1624 memcpy(filename, c->dirname, dirname_len);
1626 file_len = strlen(file);
1627 if ((dirname_len + file_len) >= sizeof(filename)) {
1628 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1629 (uint64_t)(dirname_len + file_len), c->dirname, file);
1630 return AVERROR(ENAMETOOLONG);
1633 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1634 dashenc_delete_file(s, filename);
1639 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1641 for (int i = 0; i < remove_count; ++i) {
1642 dashenc_delete_segment_file(s, os->segments[i]->file);
1644 // Delete the segment regardless of whether the file was successfully deleted
1645 av_free(os->segments[i]);
1648 os->nb_segments -= remove_count;
1649 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1652 static int dash_flush(AVFormatContext *s, int final, int stream)
1654 DASHContext *c = s->priv_data;
1657 const char *proto = avio_find_protocol_name(s->url);
1658 int use_rename = proto && !strcmp(proto, "file");
1660 int cur_flush_segment_index = 0, next_exp_index = -1;
1662 cur_flush_segment_index = c->streams[stream].segment_index;
1664 //finding the next segment's expected index, based on the current pts value
1665 if (c->use_template && !c->use_timeline && c->index_correction &&
1666 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1667 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1668 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1669 c->streams[stream].first_pts,
1670 s->streams[stream]->time_base,
1672 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1676 for (i = 0; i < s->nb_streams; i++) {
1677 OutputStream *os = &c->streams[i];
1678 AVStream *st = s->streams[i];
1679 int range_length, index_length = 0;
1681 if (!os->packets_written)
1684 // Flush the single stream that got a keyframe right now.
1685 // Flush all audio streams as well, in sync with video keyframes,
1686 // but not the other video streams.
1687 if (stream >= 0 && i != stream) {
1688 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1689 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1691 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1693 // Make sure we don't flush audio streams multiple times, when
1694 // all video streams are flushed one at a time.
1695 if (c->has_video && os->segment_index > cur_flush_segment_index)
1699 if (!c->single_file) {
1700 if (os->segment_type == SEGMENT_TYPE_MP4 && !os->written_len)
1701 write_styp(os->ctx->pb);
1703 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1706 ret = flush_dynbuf(c, os, &range_length);
1709 os->packets_written = 0;
1711 if (c->single_file) {
1712 find_index_range(s, os->full_path, os->pos, &index_length);
1714 dashenc_io_close(s, &os->out, os->temp_path);
1717 ret = avpriv_io_move(os->temp_path, os->full_path);
1723 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1727 if (!os->muxer_overhead)
1728 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1730 av_rescale_q(os->max_pts - os->start_pts,
1731 st->time_base, AV_TIME_BASE_Q);
1732 os->total_pkt_size = 0;
1734 if (!os->bit_rate) {
1735 // calculate average bitrate of first segment
1736 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1740 os->bit_rate = bitrate;
1742 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1743 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1745 os->pos += range_length;
1748 if (c->window_size) {
1749 for (i = 0; i < s->nb_streams; i++) {
1750 OutputStream *os = &c->streams[i];
1751 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1752 if (remove_count > 0)
1753 dashenc_delete_media_segments(s, os, remove_count);
1758 for (i = 0; i < s->nb_streams; i++) {
1759 OutputStream *os = &c->streams[i];
1760 if (os->ctx && os->ctx_inited) {
1761 int64_t file_size = avio_tell(os->ctx->pb);
1762 av_write_trailer(os->ctx);
1763 if (c->global_sidx) {
1764 int j, start_index, start_number;
1765 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1766 get_start_index_number(os, c, &start_index, &start_number);
1767 if (start_index >= os->nb_segments ||
1768 os->segment_type != SEGMENT_TYPE_MP4)
1770 os->init_range_length += sidx_size;
1771 for (j = start_index; j < os->nb_segments; j++) {
1772 Segment *seg = os->segments[j];
1773 seg->start_pos += sidx_size;
1781 if (c->has_video && !final) {
1782 c->nr_of_streams_flushed++;
1783 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1786 c->nr_of_streams_flushed = 0;
1788 ret = write_manifest(s, final);
1793 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
1795 DASHContext *c = s->priv_data;
1796 AVStream *st = s->streams[pkt->stream_index];
1797 OutputStream *os = &c->streams[pkt->stream_index];
1798 int64_t seg_end_duration, elapsed_duration;
1801 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
1805 // Fill in a heuristic guess of the packet duration, if none is available.
1806 // The mp4 muxer will do something similar (for the last packet in a fragment)
1807 // if nothing is set (setting it for the other packets doesn't hurt).
1808 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
1809 // invoke its heuristic (this doesn't have to be identical to that algorithm),
1810 // so that we know the exact timestamps of fragments.
1811 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
1812 pkt->duration = pkt->dts - os->last_dts;
1813 os->last_dts = pkt->dts;
1815 // If forcing the stream to start at 0, the mp4 muxer will set the start
1816 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
1817 if (os->first_pts == AV_NOPTS_VALUE &&
1818 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
1819 pkt->pts -= pkt->dts;
1823 if (os->first_pts == AV_NOPTS_VALUE)
1824 os->first_pts = pkt->pts;
1825 os->last_pts = pkt->pts;
1827 if (!c->availability_start_time[0]) {
1828 int64_t start_time_us = av_gettime();
1829 c->start_time_s = start_time_us / 1000000;
1830 format_date_now(c->availability_start_time,
1831 sizeof(c->availability_start_time));
1834 if (!os->availability_time_offset &&
1835 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
1836 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
1837 int64_t frame_duration = 0;
1839 switch (os->frag_type) {
1840 case FRAG_TYPE_DURATION:
1841 frame_duration = os->frag_duration;
1843 case FRAG_TYPE_EVERY_FRAME:
1844 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
1848 os->availability_time_offset = ((double) os->seg_duration -
1849 frame_duration) / AV_TIME_BASE;
1852 if (c->use_template && !c->use_timeline) {
1853 elapsed_duration = pkt->pts - os->first_pts;
1854 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
1856 elapsed_duration = pkt->pts - os->start_pts;
1857 seg_end_duration = os->seg_duration;
1860 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
1861 av_compare_ts(elapsed_duration, st->time_base,
1862 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
1863 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1864 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
1867 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
1871 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
1872 if (c->last_duration < os->last_duration*9/10 ||
1873 c->last_duration > os->last_duration*11/10) {
1874 av_log(s, AV_LOG_WARNING,
1875 "Segment durations differ too much, enable use_timeline "
1876 "and use_template, or keep a stricter keyframe interval\n");
1881 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
1885 if (!os->packets_written) {
1886 // If we wrote a previous segment, adjust the start time of the segment
1887 // to the end of the previous one (which is the same as the mp4 muxer
1888 // does). This avoids gaps in the timeline.
1889 if (os->max_pts != AV_NOPTS_VALUE)
1890 os->start_pts = os->max_pts;
1892 os->start_pts = pkt->pts;
1894 if (os->max_pts == AV_NOPTS_VALUE)
1895 os->max_pts = pkt->pts + pkt->duration;
1897 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
1898 os->packets_written++;
1899 os->total_pkt_size += pkt->size;
1900 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
1903 if (!os->init_range_length)
1904 flush_init_segment(s, os);
1906 //open the output context when the first frame of a segment is ready
1907 if (!c->single_file && os->packets_written == 1) {
1908 AVDictionary *opts = NULL;
1909 const char *proto = avio_find_protocol_name(s->url);
1910 int use_rename = proto && !strcmp(proto, "file");
1911 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
1912 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
1913 os->media_seg_name, pkt->stream_index,
1914 os->segment_index, os->bit_rate, os->start_pts);
1915 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
1917 snprintf(os->temp_path, sizeof(os->temp_path),
1918 use_rename ? "%s.tmp" : "%s", os->full_path);
1919 set_http_options(&opts, c);
1920 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
1921 av_dict_free(&opts);
1923 return handle_io_open_error(s, ret, os->temp_path);
1926 char *prefetch_url = use_rename ? NULL : os->filename;
1927 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
1931 //write out the data immediately in streaming mode
1932 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
1934 uint8_t *buf = NULL;
1935 if (!os->written_len)
1936 write_styp(os->ctx->pb);
1937 avio_flush(os->ctx->pb);
1938 len = avio_get_dyn_buf (os->ctx->pb, &buf);
1940 avio_write(os->out, buf + os->written_len, len - os->written_len);
1941 avio_flush(os->out);
1943 os->written_len = len;
1949 static int dash_write_trailer(AVFormatContext *s)
1951 DASHContext *c = s->priv_data;
1954 if (s->nb_streams > 0) {
1955 OutputStream *os = &c->streams[0];
1956 // If no segments have been written so far, try to do a crude
1957 // guess of the segment duration
1958 if (!c->last_duration)
1959 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
1960 s->streams[0]->time_base,
1962 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
1963 s->streams[0]->time_base,
1966 dash_flush(s, 1, -1);
1968 if (c->remove_at_exit) {
1969 for (i = 0; i < s->nb_streams; ++i) {
1970 OutputStream *os = &c->streams[i];
1971 dashenc_delete_media_segments(s, os, os->nb_segments);
1972 dashenc_delete_segment_file(s, os->initfile);
1973 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
1974 char filename[1024];
1975 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
1976 dashenc_delete_file(s, filename);
1979 dashenc_delete_file(s, s->url);
1981 if (c->hls_playlist && c->master_playlist_created) {
1982 char filename[1024];
1983 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
1984 dashenc_delete_file(s, filename);
1991 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
1993 DASHContext *c = s->priv_data;
1994 OutputStream *os = &c->streams[avpkt->stream_index];
1995 AVFormatContext *oc = os->ctx;
1996 if (oc->oformat->check_bitstream) {
1998 AVPacket pkt = *avpkt;
1999 pkt.stream_index = 0;
2000 ret = oc->oformat->check_bitstream(oc, &pkt);
2002 AVStream *st = s->streams[avpkt->stream_index];
2003 AVStream *ost = oc->streams[0];
2004 st->internal->bsfcs = ost->internal->bsfcs;
2005 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2006 ost->internal->bsfcs = NULL;
2007 ost->internal->nb_bsfcs = 0;
2014 #define OFFSET(x) offsetof(DASHContext, x)
2015 #define E AV_OPT_FLAG_ENCODING_PARAM
2016 static const AVOption options[] = {
2017 { "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 },
2018 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2019 { "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 },
2020 #if FF_API_DASH_MIN_SEG_DURATION
2021 { "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 },
2023 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2024 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2025 { "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"},
2026 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2027 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2028 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2029 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2030 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2031 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2032 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2033 { "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 },
2034 { "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 },
2035 { "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 },
2036 { "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 },
2037 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2038 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2039 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2040 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2041 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2042 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2043 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2044 { "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},
2045 { "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 },
2046 { "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"},
2047 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2048 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2049 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2050 { "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 },
2051 { "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 },
2052 { "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},
2056 static const AVClass dash_class = {
2057 .class_name = "dash muxer",
2058 .item_name = av_default_item_name,
2060 .version = LIBAVUTIL_VERSION_INT,
2063 AVOutputFormat ff_dash_muxer = {
2065 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2066 .extensions = "mpd",
2067 .priv_data_size = sizeof(DASHContext),
2068 .audio_codec = AV_CODEC_ID_AAC,
2069 .video_codec = AV_CODEC_ID_H264,
2070 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2072 .write_header = dash_write_header,
2073 .write_packet = dash_write_packet,
2074 .write_trailer = dash_write_trailer,
2075 .deinit = dash_free,
2076 .check_bitstream = dash_check_bitstream,
2077 .priv_class = &dash_class,