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 #define MPD_PROFILE_DASH 1
70 #define MPD_PROFILE_DVB 2
72 typedef struct Segment {
75 int range_length, index_length;
77 double prog_date_time;
82 typedef struct AdaptationSet {
86 int64_t frag_duration;
88 enum AVMediaType media_type;
89 AVDictionary *metadata;
90 AVRational min_frame_rate, max_frame_rate;
91 int ambiguous_frame_rate;
92 int64_t max_frag_duration;
93 int max_width, max_height;
99 typedef struct OutputStream {
100 AVFormatContext *ctx;
101 int ctx_inited, as_idx;
103 AVCodecParserContext *parser;
104 AVCodecContext *parser_avctx;
107 int64_t init_start_pos, pos;
108 int init_range_length;
109 int nb_segments, segments_size, segment_index;
110 int64_t seg_duration;
111 int64_t frag_duration;
112 int64_t last_duration;
114 int64_t first_pts, start_pts, max_pts;
115 int64_t last_dts, last_pts;
118 SegmentType segment_type; /* segment type selected for this particular stream */
119 const char *format_name;
120 const char *extension_name;
121 const char *single_file_name; /* file names selected for this particular stream */
122 const char *init_seg_name;
123 const char *media_seg_name;
128 char full_path[1024];
129 char temp_path[1024];
130 double availability_time_offset;
131 int64_t producer_reference_time;
132 char producer_reference_time_str[100];
134 int64_t total_pkt_duration;
139 int coding_dependency;
142 typedef struct DASHContext {
143 const AVClass *class; /* Class for private options. */
144 char *adaptation_sets;
148 int extra_window_size;
149 #if FF_API_DASH_MIN_SEG_DURATION
150 int min_seg_duration;
152 int64_t seg_duration;
153 int64_t frag_duration;
158 OutputStream *streams;
160 int64_t last_duration;
161 int64_t total_duration;
162 char availability_start_time[100];
164 int64_t presentation_time_offset;
166 const char *single_file_name; /* file names as specified in options */
167 const char *init_seg_name;
168 const char *media_seg_name;
169 const char *utc_timing_url;
171 const char *user_agent;
172 AVDictionary *http_opts;
175 int master_playlist_created;
176 AVIOContext *mpd_out;
177 AVIOContext *m3u8_out;
180 int index_correction;
181 AVDictionary *format_options;
183 SegmentType segment_type_option; /* segment type as specified in options */
184 int ignore_io_errors;
187 int master_publish_rate;
188 int nr_of_streams_to_flush;
189 int nr_of_streams_flushed;
192 int64_t max_gop_size;
194 int64_t target_latency;
195 int target_latency_refid;
198 static struct codec_string {
202 { AV_CODEC_ID_VP8, "vp8" },
203 { AV_CODEC_ID_VP9, "vp9" },
204 { AV_CODEC_ID_VORBIS, "vorbis" },
205 { AV_CODEC_ID_OPUS, "opus" },
206 { AV_CODEC_ID_FLAC, "flac" },
210 static struct format_string {
211 SegmentType segment_type;
214 { SEGMENT_TYPE_AUTO, "auto" },
215 { SEGMENT_TYPE_MP4, "mp4" },
216 { SEGMENT_TYPE_WEBM, "webm" },
220 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
221 AVDictionary **options) {
222 DASHContext *c = s->priv_data;
223 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
224 int err = AVERROR_MUXER_NOT_FOUND;
225 if (!*pb || !http_base_proto || !c->http_persistent) {
226 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
227 #if CONFIG_HTTP_PROTOCOL
229 URLContext *http_url_context = ffio_geturlcontext(*pb);
230 av_assert0(http_url_context);
231 err = ff_http_do_new_request(http_url_context, filename);
233 ff_format_io_close(s, pb);
239 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
240 DASHContext *c = s->priv_data;
241 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
246 if (!http_base_proto || !c->http_persistent) {
247 ff_format_io_close(s, pb);
248 #if CONFIG_HTTP_PROTOCOL
250 URLContext *http_url_context = ffio_geturlcontext(*pb);
251 av_assert0(http_url_context);
253 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
258 static const char *get_format_str(SegmentType segment_type) {
260 for (i = 0; i < SEGMENT_TYPE_NB; i++)
261 if (formats[i].segment_type == segment_type)
262 return formats[i].str;
266 static const char *get_extension_str(SegmentType type, int single_file)
270 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
271 case SEGMENT_TYPE_WEBM: return "webm";
272 default: return NULL;
276 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
277 DASHContext *c = s->priv_data;
278 char errbuf[AV_ERROR_MAX_STRING_SIZE];
279 av_strerror(err, errbuf, sizeof(errbuf));
280 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
281 "Unable to open %s for writing: %s\n", url, errbuf);
282 return c->ignore_io_errors ? 0 : err;
285 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
287 if (segment_type == SEGMENT_TYPE_AUTO) {
288 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
289 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
290 segment_type = SEGMENT_TYPE_WEBM;
292 segment_type = SEGMENT_TYPE_MP4;
299 static int init_segment_types(AVFormatContext *s)
301 DASHContext *c = s->priv_data;
302 int has_mp4_streams = 0;
303 for (int i = 0; i < s->nb_streams; ++i) {
304 OutputStream *os = &c->streams[i];
305 SegmentType segment_type = select_segment_type(
306 c->segment_type_option, s->streams[i]->codecpar->codec_id);
307 os->segment_type = segment_type;
308 os->format_name = get_format_str(segment_type);
309 if (!os->format_name) {
310 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
311 return AVERROR_MUXER_NOT_FOUND;
313 os->extension_name = get_extension_str(segment_type, c->single_file);
314 if (!os->extension_name) {
315 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
316 return AVERROR_MUXER_NOT_FOUND;
319 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
322 if (c->hls_playlist && !has_mp4_streams) {
323 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
330 static int check_file_extension(const char *filename, const char *extension) {
332 if (!filename || !extension)
334 dot = strrchr(filename, '.');
335 if (dot && !strcmp(dot + 1, extension))
340 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
341 AVRational *frame_rate, char *str, int size) {
343 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
345 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
346 vpcc.profile, vpcc.level, vpcc.bitdepth);
348 // Default to just vp9 in case of error while finding out profile or level
349 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
350 av_strlcpy(str, "vp9", size);
355 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
356 AVRational *frame_rate, char *str, int size)
358 const AVCodecTag *tags[2] = { NULL, NULL };
362 // common Webm codecs are not part of RFC 6381
363 for (i = 0; codecs[i].id; i++)
364 if (codecs[i].id == par->codec_id) {
365 if (codecs[i].id == AV_CODEC_ID_VP9) {
366 set_vp9_codec_str(s, par, frame_rate, str, size);
368 av_strlcpy(str, codecs[i].str, size);
373 // for codecs part of RFC 6381
374 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
375 tags[0] = ff_codec_movvideo_tags;
376 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
377 tags[0] = ff_codec_movaudio_tags;
381 tag = par->codec_tag;
383 tag = av_codec_get_tag(tags, par->codec_id);
391 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
393 tags[0] = ff_mp4_obj_type;
394 oti = av_codec_get_tag(tags, par->codec_id);
396 av_strlcatf(str, size, ".%02"PRIx32, oti);
400 if (tag == MKTAG('m', 'p', '4', 'a')) {
401 if (par->extradata_size >= 2) {
402 int aot = par->extradata[0] >> 3;
404 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
405 av_strlcatf(str, size, ".%d", aot);
407 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
408 // Unimplemented, should output ProfileLevelIndication as a decimal number
409 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
411 } else if (!strcmp(str, "avc1")) {
412 uint8_t *tmpbuf = NULL;
413 uint8_t *extradata = par->extradata;
414 int extradata_size = par->extradata_size;
417 if (extradata[0] != 1) {
419 if (avio_open_dyn_buf(&pb) < 0)
421 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
422 ffio_free_dyn_buf(&pb);
425 extradata_size = avio_close_dyn_buf(pb, &extradata);
429 if (extradata_size >= 4)
430 av_strlcatf(str, size, ".%02x%02x%02x",
431 extradata[1], extradata[2], extradata[3]);
433 } else if (!strcmp(str, "av01")) {
434 AV1SequenceParameters seq;
435 if (!par->extradata_size)
437 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
440 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
441 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
442 if (seq.color_description_present_flag)
443 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
445 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
446 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
451 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
456 return AVERROR(EINVAL);
460 av_write_frame(os->ctx, NULL);
461 avio_flush(os->ctx->pb);
463 if (!c->single_file) {
465 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
468 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
473 return avio_open_dyn_buf(&os->ctx->pb);
475 *range_length = avio_tell(os->ctx->pb) - os->pos;
480 static void set_http_options(AVDictionary **options, DASHContext *c)
483 av_dict_set(options, "method", c->method, 0);
484 av_dict_copy(options, c->http_opts, 0);
486 av_dict_set(options, "user_agent", c->user_agent, 0);
487 if (c->http_persistent)
488 av_dict_set_int(options, "multiple_requests", 1, 0);
490 av_dict_set_int(options, "timeout", c->timeout, 0);
493 static void get_hls_playlist_name(char *playlist_name, int string_size,
494 const char *base_url, int id) {
496 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
498 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
501 static void get_start_index_number(OutputStream *os, DASHContext *c,
502 int *start_index, int *start_number) {
505 if (c->window_size) {
506 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
507 *start_number = FFMAX(os->segment_index - c->window_size, 1);
511 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
512 int representation_id, int final,
513 char *prefetch_url) {
514 DASHContext *c = s->priv_data;
515 int timescale = os->ctx->streams[0]->time_base.den;
516 char temp_filename_hls[1024];
517 char filename_hls[1024];
518 AVDictionary *http_opts = NULL;
519 int target_duration = 0;
521 const char *proto = avio_find_protocol_name(c->dirname);
522 int use_rename = proto && !strcmp(proto, "file");
523 int i, start_index, start_number;
524 double prog_date_time = 0;
526 get_start_index_number(os, c, &start_index, &start_number);
528 if (!c->hls_playlist || start_index >= os->nb_segments ||
529 os->segment_type != SEGMENT_TYPE_MP4)
532 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
533 c->dirname, representation_id);
535 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
537 set_http_options(&http_opts, c);
538 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
539 av_dict_free(&http_opts);
541 handle_io_open_error(s, ret, temp_filename_hls);
544 for (i = start_index; i < os->nb_segments; i++) {
545 Segment *seg = os->segments[i];
546 double duration = (double) seg->duration / timescale;
547 if (target_duration <= duration)
548 target_duration = lrint(duration);
551 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
552 start_number, PLAYLIST_TYPE_NONE, 0);
554 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
555 os->init_range_length, os->init_start_pos);
557 for (i = start_index; i < os->nb_segments; i++) {
558 Segment *seg = os->segments[i];
560 if (prog_date_time == 0) {
561 if (os->nb_segments == 1)
562 prog_date_time = c->start_time_s;
564 prog_date_time = seg->prog_date_time;
566 seg->prog_date_time = prog_date_time;
568 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
569 (double) seg->duration / timescale, 0,
570 seg->range_length, seg->start_pos, NULL,
571 c->single_file ? os->initfile : seg->file,
572 &prog_date_time, 0, 0, 0);
574 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
579 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
582 ff_hls_write_end_list(c->m3u8_out);
584 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
587 ff_rename(temp_filename_hls, filename_hls, os->ctx);
590 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
592 DASHContext *c = s->priv_data;
593 int ret, range_length;
595 ret = flush_dynbuf(c, os, &range_length);
599 os->pos = os->init_range_length = range_length;
600 if (!c->single_file) {
602 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
603 dashenc_io_close(s, &os->out, filename);
608 static void dash_free(AVFormatContext *s)
610 DASHContext *c = s->priv_data;
614 for (i = 0; i < c->nb_as; i++) {
615 av_dict_free(&c->as[i].metadata);
616 av_freep(&c->as[i].descriptor);
624 for (i = 0; i < s->nb_streams; i++) {
625 OutputStream *os = &c->streams[i];
626 if (os->ctx && os->ctx->pb) {
628 ffio_free_dyn_buf(&os->ctx->pb);
630 avio_close(os->ctx->pb);
632 ff_format_io_close(s, &os->out);
633 avformat_free_context(os->ctx);
634 avcodec_free_context(&os->parser_avctx);
635 av_parser_close(os->parser);
636 for (j = 0; j < os->nb_segments; j++)
637 av_free(os->segments[j]);
638 av_free(os->segments);
639 av_freep(&os->single_file_name);
640 av_freep(&os->init_seg_name);
641 av_freep(&os->media_seg_name);
643 av_freep(&c->streams);
645 ff_format_io_close(s, &c->mpd_out);
646 ff_format_io_close(s, &c->m3u8_out);
649 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
650 int representation_id, int final)
652 DASHContext *c = s->priv_data;
653 int i, start_index, start_number;
654 get_start_index_number(os, c, &start_index, &start_number);
656 if (c->use_template) {
657 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
658 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
659 if (!c->use_timeline) {
660 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
661 if (c->streaming && os->availability_time_offset)
662 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
663 os->availability_time_offset);
665 if (c->ldash && !final && os->frag_type != FRAG_TYPE_NONE &&
666 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
667 avio_printf(out, "availabilityTimeComplete=\"false\" ");
669 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
670 if (c->presentation_time_offset)
671 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
672 avio_printf(out, ">\n");
673 if (c->use_timeline) {
674 int64_t cur_time = 0;
675 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
676 for (i = start_index; i < os->nb_segments; ) {
677 Segment *seg = os->segments[i];
679 avio_printf(out, "\t\t\t\t\t\t<S ");
680 if (i == start_index || seg->time != cur_time) {
681 cur_time = seg->time;
682 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
684 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
685 while (i + repeat + 1 < os->nb_segments &&
686 os->segments[i + repeat + 1]->duration == seg->duration &&
687 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
690 avio_printf(out, "r=\"%d\" ", repeat);
691 avio_printf(out, "/>\n");
693 cur_time += (1 + repeat) * seg->duration;
695 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
697 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
698 } else if (c->single_file) {
699 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
700 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);
701 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);
702 for (i = start_index; i < os->nb_segments; i++) {
703 Segment *seg = os->segments[i];
704 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
705 if (seg->index_length)
706 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
707 avio_printf(out, "/>\n");
709 avio_printf(out, "\t\t\t\t</SegmentList>\n");
711 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);
712 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
713 for (i = start_index; i < os->nb_segments; i++) {
714 Segment *seg = os->segments[i];
715 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
717 avio_printf(out, "\t\t\t\t</SegmentList>\n");
719 if (!c->lhls || final) {
720 write_hls_media_playlist(os, s, representation_id, final, NULL);
725 static char *xmlescape(const char *str) {
726 int outlen = strlen(str)*3/2 + 6;
727 char *out = av_realloc(NULL, outlen + 1);
731 for (; *str; str++) {
732 if (pos + 6 > outlen) {
734 outlen = 2 * outlen + 6;
735 tmp = av_realloc(out, outlen + 1);
743 memcpy(&out[pos], "&", 5);
745 } else if (*str == '<') {
746 memcpy(&out[pos], "<", 4);
748 } else if (*str == '>') {
749 memcpy(&out[pos], ">", 4);
751 } else if (*str == '\'') {
752 memcpy(&out[pos], "'", 6);
754 } else if (*str == '\"') {
755 memcpy(&out[pos], """, 6);
765 static void write_time(AVIOContext *out, int64_t time)
767 int seconds = time / AV_TIME_BASE;
768 int fractions = time % AV_TIME_BASE;
769 int minutes = seconds / 60;
770 int hours = minutes / 60;
773 avio_printf(out, "PT");
775 avio_printf(out, "%dH", hours);
776 if (hours || minutes)
777 avio_printf(out, "%dM", minutes);
778 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
781 static void format_date(char *buf, int size, int64_t time_us)
783 struct tm *ptm, tmbuf;
784 int64_t time_ms = time_us / 1000;
785 const time_t time_s = time_ms / 1000;
786 int millisec = time_ms - (time_s * 1000);
787 ptm = gmtime_r(&time_s, &tmbuf);
790 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
795 snprintf(buf + len, size - len, ".%03dZ", millisec);
799 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
802 DASHContext *c = s->priv_data;
803 AdaptationSet *as = &c->as[as_index];
804 AVDictionaryEntry *lang, *role;
807 avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
808 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
809 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)
810 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
811 else 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))
812 avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
813 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
814 avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
815 avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
817 lang = av_dict_get(as->metadata, "language", NULL, 0);
819 avio_printf(out, " lang=\"%s\"", lang->value);
820 avio_printf(out, ">\n");
822 if (!final && c->ldash && as->max_frag_duration)
823 avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
824 if (as->trick_idx >= 0)
825 avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
826 role = av_dict_get(as->metadata, "role", NULL, 0);
828 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
830 avio_printf(out, "\t\t\t%s\n", as->descriptor);
831 for (i = 0; i < s->nb_streams; i++) {
832 AVStream *st = s->streams[i];
833 OutputStream *os = &c->streams[i];
834 char bandwidth_str[64] = {'\0'};
836 if (os->as_idx - 1 != as_index)
839 if (os->bit_rate > 0)
840 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
843 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
844 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
845 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
846 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
847 avio_printf(out, " scanType=\"unknown\"");
848 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
849 avio_printf(out, " scanType=\"interlaced\"");
850 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
851 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
852 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
853 if (as->trick_idx >= 0) {
854 AdaptationSet *tas = &c->as[as->trick_idx];
855 if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
856 avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
858 if (!os->coding_dependency)
859 avio_printf(out, " codingDependency=\"false\"");
860 avio_printf(out, ">\n");
862 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
863 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
864 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
865 s->streams[i]->codecpar->channels);
867 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
868 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"encoder\" wallclockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
869 i, os->producer_reference_time_str, c->presentation_time_offset);
870 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
871 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
873 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE &&
874 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
875 avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
876 output_segment_list(os, out, s, i, final);
877 avio_printf(out, "\t\t\t</Representation>\n");
879 avio_printf(out, "\t\t</AdaptationSet>\n");
884 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
886 DASHContext *c = s->priv_data;
889 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
890 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
891 return AVERROR(EINVAL);
893 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
895 return AVERROR(ENOMEM);
899 *as = &c->as[c->nb_as - 1];
900 memset(*as, 0, sizeof(**as));
901 (*as)->media_type = type;
902 (*as)->frag_type = -1;
903 (*as)->trick_idx = -1;
908 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
910 DASHContext *c = s->priv_data;
911 AdaptationSet *as = &c->as[as_idx - 1];
912 OutputStream *os = &c->streams[i];
914 if (as->media_type != s->streams[i]->codecpar->codec_type) {
915 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
916 return AVERROR(EINVAL);
917 } else if (os->as_idx) {
918 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
919 return AVERROR(EINVAL);
921 if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
922 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
923 return AVERROR(EINVAL);
931 static int parse_adaptation_sets(AVFormatContext *s)
933 DASHContext *c = s->priv_data;
934 const char *p = c->adaptation_sets;
935 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
939 // default: one AdaptationSet for each stream
941 for (i = 0; i < s->nb_streams; i++) {
942 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
946 c->streams[i].as_idx = c->nb_as;
952 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
953 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
954 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
955 // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
956 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
957 // descriptor_str should be a self-closing xml tag.
958 // seg_duration and frag_duration have the same syntax as the global options of
959 // the same name, and the former have precedence over them if set.
965 } else if (state == new_set && av_strstart(p, "id=", &p)) {
966 char id_str[10], *end_str;
969 snprintf(id_str, sizeof(id_str), "%.*s", n, p);
971 i = strtol(id_str, &end_str, 10);
972 if (id_str == end_str || i < 0 || i > c->nb_as) {
973 av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
974 return AVERROR(EINVAL);
977 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
984 state = parse_default;
985 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
986 state = parse_seg_duration;
987 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
988 state = parse_frag_duration;
989 } else if (state == parse_seg_duration || state == parse_frag_duration) {
994 snprintf(str, sizeof(str), "%.*s", n, p);
999 ret = av_parse_time(&usecs, str, 1);
1001 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
1005 if (state == parse_seg_duration)
1006 as->seg_duration = usecs;
1008 as->frag_duration = usecs;
1009 state = parse_default;
1010 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1013 n = strcspn(p, ",");
1014 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1019 if (!strcmp(type_str, "duration"))
1020 as->frag_type = FRAG_TYPE_DURATION;
1021 else if (!strcmp(type_str, "pframes"))
1022 as->frag_type = FRAG_TYPE_PFRAMES;
1023 else if (!strcmp(type_str, "every_frame"))
1024 as->frag_type = FRAG_TYPE_EVERY_FRAME;
1025 else if (!strcmp(type_str, "none"))
1026 as->frag_type = FRAG_TYPE_NONE;
1028 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1031 state = parse_default;
1032 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1033 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1034 if (n < strlen(p)) {
1035 as->descriptor = av_strndup(p, n);
1037 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1038 return AVERROR(EINVAL);
1043 state = parse_default;
1044 } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1045 char trick_id_str[10], *end_str;
1047 n = strcspn(p, ",");
1048 snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1051 as->trick_idx = strtol(trick_id_str, &end_str, 10);
1052 if (trick_id_str == end_str || as->trick_idx < 0)
1053 return AVERROR(EINVAL);
1057 state = parse_default;
1058 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1059 state = parsing_streams;
1060 } else if (state == parsing_streams) {
1061 AdaptationSet *as = &c->as[c->nb_as - 1];
1062 char idx_str[8], *end_str;
1064 n = strcspn(p, " ,");
1065 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1068 // if value is "a" or "v", map all streams of that type
1069 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1070 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1071 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1073 for (i = 0; i < s->nb_streams; i++) {
1074 if (s->streams[i]->codecpar->codec_type != type)
1077 as->media_type = s->streams[i]->codecpar->codec_type;
1079 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1082 } else { // select single stream
1083 i = strtol(idx_str, &end_str, 10);
1084 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1085 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1086 return AVERROR(EINVAL);
1088 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1090 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1091 as->media_type = s->streams[i]->codecpar->codec_type;
1094 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1103 return AVERROR(EINVAL);
1108 // check for unassigned streams
1109 for (i = 0; i < s->nb_streams; i++) {
1110 OutputStream *os = &c->streams[i];
1112 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1113 return AVERROR(EINVAL);
1117 // check references for trick mode AdaptationSet
1118 for (i = 0; i < c->nb_as; i++) {
1120 if (as->trick_idx < 0)
1122 for (n = 0; n < c->nb_as; n++) {
1123 if (c->as[n].id == as->trick_idx)
1126 if (n >= c->nb_as) {
1127 av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1128 return AVERROR(EINVAL);
1135 static int write_manifest(AVFormatContext *s, int final)
1137 DASHContext *c = s->priv_data;
1139 char temp_filename[1024];
1141 const char *proto = avio_find_protocol_name(s->url);
1142 int use_rename = proto && !strcmp(proto, "file");
1143 static unsigned int warned_non_file = 0;
1144 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1145 AVDictionary *opts = NULL;
1147 if (!use_rename && !warned_non_file++)
1148 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1150 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1151 set_http_options(&opts, c);
1152 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1153 av_dict_free(&opts);
1155 return handle_io_open_error(s, ret, temp_filename);
1158 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1159 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1160 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1161 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1162 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1164 if (c->profile & MPD_PROFILE_DASH)
1165 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1166 if (c->profile & MPD_PROFILE_DVB)
1167 avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1168 avio_printf(out, "\ttype=\"%s\"\n",
1169 final ? "static" : "dynamic");
1171 avio_printf(out, "\tmediaPresentationDuration=\"");
1172 write_time(out, c->total_duration);
1173 avio_printf(out, "\"\n");
1175 int64_t update_period = c->last_duration / AV_TIME_BASE;
1177 if (c->use_template && !c->use_timeline)
1178 update_period = 500;
1179 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1181 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1182 if (c->availability_start_time[0])
1183 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1184 format_date(now_str, sizeof(now_str), av_gettime());
1186 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1187 if (c->window_size && c->use_template) {
1188 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1189 write_time(out, c->last_duration * c->window_size);
1190 avio_printf(out, "\"\n");
1193 avio_printf(out, "\tminBufferTime=\"");
1194 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1195 avio_printf(out, "\">\n");
1196 avio_printf(out, "\t<ProgramInformation>\n");
1198 char *escaped = xmlescape(title->value);
1199 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1202 avio_printf(out, "\t</ProgramInformation>\n");
1203 if (!final && c->target_latency && c->target_latency_refid >= 0) {
1204 avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1205 avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1206 if (s->nb_streams > 1)
1207 avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1208 avio_printf(out, "/>\n");
1209 avio_printf(out, "\t</ServiceDescription>\n");
1212 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1213 OutputStream *os = &c->streams[0];
1214 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1215 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1216 avio_printf(out, "\t<Period id=\"0\" start=\"");
1217 write_time(out, start_time);
1218 avio_printf(out, "\">\n");
1220 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1223 for (i = 0; i < c->nb_as; i++) {
1224 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1227 avio_printf(out, "\t</Period>\n");
1229 if (c->utc_timing_url)
1230 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1232 avio_printf(out, "</MPD>\n");
1234 dashenc_io_close(s, &c->mpd_out, temp_filename);
1237 if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1241 if (c->hls_playlist) {
1242 char filename_hls[1024];
1243 const char *audio_group = "A1";
1244 char audio_codec_str[128] = "\0";
1246 int max_audio_bitrate = 0;
1248 // Publish master playlist only the configured rate
1249 if (c->master_playlist_created && (!c->master_publish_rate ||
1250 c->streams[0].segment_index % c->master_publish_rate))
1254 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1256 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1258 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1260 set_http_options(&opts, c);
1261 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1262 av_dict_free(&opts);
1264 return handle_io_open_error(s, ret, temp_filename);
1267 ff_hls_write_playlist_version(c->m3u8_out, 7);
1269 for (i = 0; i < s->nb_streams; i++) {
1270 char playlist_file[64];
1271 AVStream *st = s->streams[i];
1272 OutputStream *os = &c->streams[i];
1273 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1275 if (os->segment_type != SEGMENT_TYPE_MP4)
1277 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1278 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1279 playlist_file, NULL, i, is_default);
1280 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1281 os->muxer_overhead, max_audio_bitrate);
1282 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1283 if (strlen(audio_codec_str))
1284 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1285 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1290 for (i = 0; i < s->nb_streams; i++) {
1291 char playlist_file[64];
1292 char codec_str[128];
1293 AVStream *st = s->streams[i];
1294 OutputStream *os = &c->streams[i];
1295 char *agroup = NULL;
1296 char *codec_str_ptr = NULL;
1297 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1298 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1300 if (os->segment_type != SEGMENT_TYPE_MP4)
1302 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1303 if (max_audio_bitrate) {
1304 agroup = (char *)audio_group;
1305 stream_bitrate += max_audio_bitrate;
1306 av_strlcat(codec_str, ",", sizeof(codec_str));
1307 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1309 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1310 codec_str_ptr = codec_str;
1312 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1313 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1314 playlist_file, agroup,
1315 codec_str_ptr, NULL);
1317 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1319 if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1321 c->master_playlist_created = 1;
1327 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1329 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1331 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1335 static int dash_init(AVFormatContext *s)
1337 DASHContext *c = s->priv_data;
1340 char basename[1024];
1342 c->nr_of_streams_to_flush = 0;
1343 if (c->single_file_name)
1346 c->use_template = 0;
1349 av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1350 return AVERROR(EINVAL);
1352 #if FF_API_DASH_MIN_SEG_DURATION
1353 if (c->min_seg_duration != 5000000) {
1354 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1355 c->seg_duration = c->min_seg_duration;
1358 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1359 av_log(s, AV_LOG_ERROR,
1360 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1361 return AVERROR_EXPERIMENTAL;
1364 if (c->lhls && !c->streaming) {
1365 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1369 if (c->lhls && !c->hls_playlist) {
1370 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1374 if (c->ldash && !c->streaming) {
1375 av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1379 if (c->target_latency && !c->streaming) {
1380 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1381 c->target_latency = 0;
1384 if (c->global_sidx && !c->single_file) {
1385 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1389 if (c->global_sidx && c->streaming) {
1390 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1393 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1394 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1395 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1398 if (c->write_prft && !c->utc_timing_url) {
1399 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1403 if (c->write_prft && !c->streaming) {
1404 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1408 if (c->target_latency && !c->write_prft) {
1409 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1410 c->target_latency = 0;
1413 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1414 ptr = strrchr(c->dirname, '/');
1416 av_strlcpy(basename, &ptr[1], sizeof(basename));
1419 c->dirname[0] = '\0';
1420 av_strlcpy(basename, s->url, sizeof(basename));
1423 ptr = strrchr(basename, '.');
1427 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1429 return AVERROR(ENOMEM);
1431 if ((ret = parse_adaptation_sets(s)) < 0)
1434 if ((ret = init_segment_types(s)) < 0)
1437 for (i = 0; i < s->nb_streams; i++) {
1438 OutputStream *os = &c->streams[i];
1439 AdaptationSet *as = &c->as[os->as_idx - 1];
1440 AVFormatContext *ctx;
1442 AVDictionary *opts = NULL;
1443 char filename[1024];
1445 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1446 if (!os->bit_rate) {
1447 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1448 AV_LOG_ERROR : AV_LOG_WARNING;
1449 av_log(s, level, "No bit rate set for stream %d\n", i);
1450 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1451 return AVERROR(EINVAL);
1454 // copy AdaptationSet language and role from stream metadata
1455 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1456 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1458 if (c->init_seg_name) {
1459 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1460 if (!os->init_seg_name)
1461 return AVERROR(ENOMEM);
1463 if (c->media_seg_name) {
1464 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1465 if (!os->media_seg_name)
1466 return AVERROR(ENOMEM);
1468 if (c->single_file_name) {
1469 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1470 if (!os->single_file_name)
1471 return AVERROR(ENOMEM);
1474 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1475 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1476 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1477 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1478 av_log(s, AV_LOG_WARNING,
1479 "One or many segment file names doesn't end with .webm. "
1480 "Override -init_seg_name and/or -media_seg_name and/or "
1481 "-single_file_name to end with the extension .webm\n");
1484 // Streaming not supported as matroskaenc buffers internally before writing the output
1485 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1490 os->ctx = ctx = avformat_alloc_context();
1492 return AVERROR(ENOMEM);
1494 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1496 return AVERROR_MUXER_NOT_FOUND;
1497 ctx->interrupt_callback = s->interrupt_callback;
1498 ctx->opaque = s->opaque;
1499 ctx->io_close = s->io_close;
1500 ctx->io_open = s->io_open;
1501 ctx->strict_std_compliance = s->strict_std_compliance;
1503 if (!(st = avformat_new_stream(ctx, NULL)))
1504 return AVERROR(ENOMEM);
1505 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1506 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1507 st->time_base = s->streams[i]->time_base;
1508 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1509 ctx->avoid_negative_ts = s->avoid_negative_ts;
1510 ctx->flags = s->flags;
1512 os->parser = av_parser_init(st->codecpar->codec_id);
1514 os->parser_avctx = avcodec_alloc_context3(NULL);
1515 if (!os->parser_avctx)
1516 return AVERROR(ENOMEM);
1517 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1520 // We only want to parse frame headers
1521 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1523 os->coding_dependency = 1;
1525 if (c->single_file) {
1526 if (os->single_file_name)
1527 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1529 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1531 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1533 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1534 set_http_options(&opts, c);
1535 if (!c->single_file) {
1536 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1538 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1540 ctx->url = av_strdup(filename);
1541 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1543 av_dict_free(&opts);
1546 os->init_start_pos = 0;
1548 av_dict_copy(&opts, c->format_options, 0);
1549 if (!as->seg_duration)
1550 as->seg_duration = c->seg_duration;
1551 if (!as->frag_duration)
1552 as->frag_duration = c->frag_duration;
1553 if (as->frag_type < 0)
1554 as->frag_type = c->frag_type;
1555 os->seg_duration = as->seg_duration;
1556 os->frag_duration = as->frag_duration;
1557 os->frag_type = as->frag_type;
1559 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1560 av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1561 return AVERROR(EINVAL);
1564 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1565 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1566 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1568 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1569 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1570 return AVERROR(EINVAL);
1572 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1573 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1574 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1575 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1578 if (os->segment_type == SEGMENT_TYPE_MP4) {
1580 // skip_sidx : Reduce bitrate overhead
1581 // skip_trailer : Avoids growing memory usage with time
1582 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1585 av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1587 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1589 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1590 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1592 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1593 if (os->frag_type == FRAG_TYPE_DURATION)
1594 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1596 av_dict_set(&opts, "write_prft", "wallclock", 0);
1598 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1599 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1600 av_dict_set_int(&opts, "dash", 1, 0);
1601 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1602 av_dict_set_int(&opts, "live", 1, 0);
1604 ret = avformat_init_output(ctx, &opts);
1605 av_dict_free(&opts);
1609 avio_flush(ctx->pb);
1611 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1613 s->streams[i]->time_base = st->time_base;
1614 // If the muxer wants to shift timestamps, request to have them shifted
1615 // already before being handed to this muxer, so we don't have mismatches
1616 // between the MPD and the actual segments.
1617 s->avoid_negative_ts = ctx->avoid_negative_ts;
1618 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1619 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1621 if (avg_frame_rate.num > 0) {
1622 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1623 as->min_frame_rate = avg_frame_rate;
1624 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1625 as->max_frame_rate = avg_frame_rate;
1627 as->ambiguous_frame_rate = 1;
1630 if (st->codecpar->width > as->max_width)
1631 as->max_width = st->codecpar->width;
1632 if (st->codecpar->height > as->max_height)
1633 as->max_height = st->codecpar->height;
1635 if (st->sample_aspect_ratio.num)
1636 os->sar = st->sample_aspect_ratio;
1638 os->sar = (AVRational){1,1};
1639 av_reduce(&par.num, &par.den,
1640 st->codecpar->width * (int64_t)os->sar.num,
1641 st->codecpar->height * (int64_t)os->sar.den,
1644 if (as->par.num && av_cmp_q(par, as->par)) {
1645 av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
1646 return AVERROR(EINVAL);
1653 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1654 sizeof(os->codec_str));
1655 os->first_pts = AV_NOPTS_VALUE;
1656 os->max_pts = AV_NOPTS_VALUE;
1657 os->last_dts = AV_NOPTS_VALUE;
1658 os->segment_index = 1;
1660 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1661 c->nr_of_streams_to_flush++;
1664 if (!c->has_video && c->seg_duration <= 0) {
1665 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1666 return AVERROR(EINVAL);
1668 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1669 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1671 c->nr_of_streams_flushed = 0;
1672 c->target_latency_refid = -1;
1677 static int dash_write_header(AVFormatContext *s)
1679 DASHContext *c = s->priv_data;
1681 for (i = 0; i < s->nb_streams; i++) {
1682 OutputStream *os = &c->streams[i];
1683 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1686 // Flush init segment
1687 // Only for WebM segment, since for mp4 delay_moov is set and
1688 // the init segment is thus flushed after the first packets.
1689 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1690 (ret = flush_init_segment(s, os)) < 0)
1696 static int add_segment(OutputStream *os, const char *file,
1697 int64_t time, int64_t duration,
1698 int64_t start_pos, int64_t range_length,
1699 int64_t index_length, int next_exp_index)
1703 if (os->nb_segments >= os->segments_size) {
1704 os->segments_size = (os->segments_size + 1) * 2;
1705 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1706 os->segments_size)) < 0) {
1707 os->segments_size = 0;
1708 os->nb_segments = 0;
1712 seg = av_mallocz(sizeof(*seg));
1714 return AVERROR(ENOMEM);
1715 av_strlcpy(seg->file, file, sizeof(seg->file));
1717 seg->duration = duration;
1718 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1719 seg->duration += seg->time;
1722 seg->start_pos = start_pos;
1723 seg->range_length = range_length;
1724 seg->index_length = index_length;
1725 os->segments[os->nb_segments++] = seg;
1726 os->segment_index++;
1727 //correcting the segment index if it has fallen behind the expected value
1728 if (os->segment_index < next_exp_index) {
1729 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1730 file, os->segment_index, next_exp_index);
1731 os->segment_index = next_exp_index;
1736 static void write_styp(AVIOContext *pb)
1739 ffio_wfourcc(pb, "styp");
1740 ffio_wfourcc(pb, "msdh");
1741 avio_wb32(pb, 0); /* minor */
1742 ffio_wfourcc(pb, "msdh");
1743 ffio_wfourcc(pb, "msix");
1746 static void find_index_range(AVFormatContext *s, const char *full_path,
1747 int64_t pos, int *index_length)
1753 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1756 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1757 ff_format_io_close(s, &pb);
1760 ret = avio_read(pb, buf, 8);
1761 ff_format_io_close(s, &pb);
1764 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1766 *index_length = AV_RB32(&buf[0]);
1769 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1770 AVPacket *pkt, AVRational *frame_rate)
1772 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1774 int ret, extradata_size;
1776 if (par->extradata_size)
1779 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1780 if (!extradata_size)
1783 ret = ff_alloc_extradata(par, extradata_size);
1787 memcpy(par->extradata, extradata, extradata_size);
1789 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1794 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1795 DASHContext *c = s->priv_data;
1796 int http_base_proto = ff_is_http_proto(filename);
1798 if (http_base_proto) {
1799 AVIOContext *out = NULL;
1800 AVDictionary *http_opts = NULL;
1802 set_http_options(&http_opts, c);
1803 av_dict_set(&http_opts, "method", "DELETE", 0);
1805 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1806 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1809 av_dict_free(&http_opts);
1810 ff_format_io_close(s, &out);
1812 int res = avpriv_io_delete(filename);
1814 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1815 av_strerror(res, errbuf, sizeof(errbuf));
1816 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1821 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1823 DASHContext *c = s->priv_data;
1824 size_t dirname_len, file_len;
1825 char filename[1024];
1827 dirname_len = strlen(c->dirname);
1828 if (dirname_len >= sizeof(filename)) {
1829 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1830 (uint64_t)dirname_len, c->dirname);
1831 return AVERROR(ENAMETOOLONG);
1834 memcpy(filename, c->dirname, dirname_len);
1836 file_len = strlen(file);
1837 if ((dirname_len + file_len) >= sizeof(filename)) {
1838 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1839 (uint64_t)(dirname_len + file_len), c->dirname, file);
1840 return AVERROR(ENAMETOOLONG);
1843 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1844 dashenc_delete_file(s, filename);
1849 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1851 for (int i = 0; i < remove_count; ++i) {
1852 dashenc_delete_segment_file(s, os->segments[i]->file);
1854 // Delete the segment regardless of whether the file was successfully deleted
1855 av_free(os->segments[i]);
1858 os->nb_segments -= remove_count;
1859 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1862 static int dash_flush(AVFormatContext *s, int final, int stream)
1864 DASHContext *c = s->priv_data;
1867 const char *proto = avio_find_protocol_name(s->url);
1868 int use_rename = proto && !strcmp(proto, "file");
1870 int cur_flush_segment_index = 0, next_exp_index = -1;
1872 cur_flush_segment_index = c->streams[stream].segment_index;
1874 //finding the next segment's expected index, based on the current pts value
1875 if (c->use_template && !c->use_timeline && c->index_correction &&
1876 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1877 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1878 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1879 c->streams[stream].first_pts,
1880 s->streams[stream]->time_base,
1882 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1886 for (i = 0; i < s->nb_streams; i++) {
1887 OutputStream *os = &c->streams[i];
1888 AVStream *st = s->streams[i];
1889 int range_length, index_length = 0;
1891 if (!os->packets_written)
1894 // Flush the single stream that got a keyframe right now.
1895 // Flush all audio streams as well, in sync with video keyframes,
1896 // but not the other video streams.
1897 if (stream >= 0 && i != stream) {
1898 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1899 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1901 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1903 // Make sure we don't flush audio streams multiple times, when
1904 // all video streams are flushed one at a time.
1905 if (c->has_video && os->segment_index > cur_flush_segment_index)
1909 if (!c->single_file) {
1910 if (os->segment_type == SEGMENT_TYPE_MP4 && !os->written_len)
1911 write_styp(os->ctx->pb);
1913 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1916 ret = flush_dynbuf(c, os, &range_length);
1919 os->packets_written = 0;
1921 if (c->single_file) {
1922 find_index_range(s, os->full_path, os->pos, &index_length);
1924 dashenc_io_close(s, &os->out, os->temp_path);
1927 ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1933 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1937 if (!os->muxer_overhead && os->max_pts > os->start_pts)
1938 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1940 av_rescale_q(os->max_pts - os->start_pts,
1941 st->time_base, AV_TIME_BASE_Q);
1942 os->total_pkt_size = 0;
1943 os->total_pkt_duration = 0;
1945 if (!os->bit_rate) {
1946 // calculate average bitrate of first segment
1947 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1951 os->bit_rate = bitrate;
1953 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1954 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1956 os->pos += range_length;
1959 if (c->window_size) {
1960 for (i = 0; i < s->nb_streams; i++) {
1961 OutputStream *os = &c->streams[i];
1962 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1963 if (remove_count > 0)
1964 dashenc_delete_media_segments(s, os, remove_count);
1969 for (i = 0; i < s->nb_streams; i++) {
1970 OutputStream *os = &c->streams[i];
1971 if (os->ctx && os->ctx_inited) {
1972 int64_t file_size = avio_tell(os->ctx->pb);
1973 av_write_trailer(os->ctx);
1974 if (c->global_sidx) {
1975 int j, start_index, start_number;
1976 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1977 get_start_index_number(os, c, &start_index, &start_number);
1978 if (start_index >= os->nb_segments ||
1979 os->segment_type != SEGMENT_TYPE_MP4)
1981 os->init_range_length += sidx_size;
1982 for (j = start_index; j < os->nb_segments; j++) {
1983 Segment *seg = os->segments[j];
1984 seg->start_pos += sidx_size;
1992 if (c->has_video && !final) {
1993 c->nr_of_streams_flushed++;
1994 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1997 c->nr_of_streams_flushed = 0;
1999 ret = write_manifest(s, final);
2004 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
2006 DASHContext *c = s->priv_data;
2007 AVStream *st = s->streams[pkt->stream_index];
2008 OutputStream *os = &c->streams[pkt->stream_index];
2009 AdaptationSet *as = &c->as[os->as_idx - 1];
2010 int64_t seg_end_duration, elapsed_duration;
2013 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2017 // Fill in a heuristic guess of the packet duration, if none is available.
2018 // The mp4 muxer will do something similar (for the last packet in a fragment)
2019 // if nothing is set (setting it for the other packets doesn't hurt).
2020 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2021 // invoke its heuristic (this doesn't have to be identical to that algorithm),
2022 // so that we know the exact timestamps of fragments.
2023 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2024 pkt->duration = pkt->dts - os->last_dts;
2025 os->last_dts = pkt->dts;
2027 // If forcing the stream to start at 0, the mp4 muxer will set the start
2028 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2029 if (os->first_pts == AV_NOPTS_VALUE &&
2030 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
2031 pkt->pts -= pkt->dts;
2035 if (os->first_pts == AV_NOPTS_VALUE) {
2037 AVProducerReferenceTime *prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT,
2039 if (prft && side_data_size == sizeof(AVProducerReferenceTime) && !prft->flags) {
2040 os->producer_reference_time = prft->wallclock;
2041 if (c->target_latency_refid < 0)
2042 c->target_latency_refid = pkt->stream_index;
2044 os->first_pts = pkt->pts;
2046 os->last_pts = pkt->pts;
2048 if (!c->availability_start_time[0]) {
2049 int64_t start_time_us = av_gettime();
2050 c->start_time_s = start_time_us / 1000000;
2051 format_date(c->availability_start_time,
2052 sizeof(c->availability_start_time), start_time_us);
2055 if (!os->packets_written)
2056 os->availability_time_offset = 0;
2058 if (!os->availability_time_offset &&
2059 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2060 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2061 AdaptationSet *as = &c->as[os->as_idx - 1];
2062 int64_t frame_duration = 0;
2064 switch (os->frag_type) {
2065 case FRAG_TYPE_DURATION:
2066 frame_duration = os->frag_duration;
2068 case FRAG_TYPE_EVERY_FRAME:
2069 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2073 os->availability_time_offset = ((double) os->seg_duration -
2074 frame_duration) / AV_TIME_BASE;
2075 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2078 if (c->use_template && !c->use_timeline) {
2079 elapsed_duration = pkt->pts - os->first_pts;
2080 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2082 elapsed_duration = pkt->pts - os->start_pts;
2083 seg_end_duration = os->seg_duration;
2087 (os->frag_type == FRAG_TYPE_PFRAMES ||
2088 as->trick_idx >= 0)) {
2089 // Parse the packets only in scenarios where it's needed
2092 av_parser_parse2(os->parser, os->parser_avctx,
2093 &data, &size, pkt->data, pkt->size,
2094 pkt->pts, pkt->dts, pkt->pos);
2096 os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2099 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2100 av_compare_ts(elapsed_duration, st->time_base,
2101 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2102 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2103 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2106 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2110 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2111 if (c->last_duration < os->last_duration*9/10 ||
2112 c->last_duration > os->last_duration*11/10) {
2113 av_log(s, AV_LOG_WARNING,
2114 "Segment durations differ too much, enable use_timeline "
2115 "and use_template, or keep a stricter keyframe interval\n");
2120 if (c->write_prft && os->producer_reference_time && !os->producer_reference_time_str[0])
2121 format_date(os->producer_reference_time_str,
2122 sizeof(os->producer_reference_time_str),
2123 os->producer_reference_time);
2125 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2129 if (!os->packets_written) {
2130 // If we wrote a previous segment, adjust the start time of the segment
2131 // to the end of the previous one (which is the same as the mp4 muxer
2132 // does). This avoids gaps in the timeline.
2133 if (os->max_pts != AV_NOPTS_VALUE)
2134 os->start_pts = os->max_pts;
2136 os->start_pts = pkt->pts;
2138 if (os->max_pts == AV_NOPTS_VALUE)
2139 os->max_pts = pkt->pts + pkt->duration;
2141 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2143 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2144 os->frag_type == FRAG_TYPE_PFRAMES &&
2145 os->packets_written) {
2146 av_assert0(os->parser);
2147 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2148 st->codecpar->video_delay &&
2149 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2150 pkt->flags & AV_PKT_FLAG_KEY) {
2151 ret = av_write_frame(os->ctx, NULL);
2155 if (!os->availability_time_offset) {
2156 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2158 os->availability_time_offset = ((double) os->seg_duration -
2159 frag_duration) / AV_TIME_BASE;
2160 as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2165 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2166 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2167 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2170 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2173 os->packets_written++;
2174 os->total_pkt_size += pkt->size;
2175 os->total_pkt_duration += pkt->duration;
2176 os->last_flags = pkt->flags;
2178 if (!os->init_range_length)
2179 flush_init_segment(s, os);
2181 //open the output context when the first frame of a segment is ready
2182 if (!c->single_file && os->packets_written == 1) {
2183 AVDictionary *opts = NULL;
2184 const char *proto = avio_find_protocol_name(s->url);
2185 int use_rename = proto && !strcmp(proto, "file");
2186 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2187 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2188 os->media_seg_name, pkt->stream_index,
2189 os->segment_index, os->bit_rate, os->start_pts);
2190 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2192 snprintf(os->temp_path, sizeof(os->temp_path),
2193 use_rename ? "%s.tmp" : "%s", os->full_path);
2194 set_http_options(&opts, c);
2195 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2196 av_dict_free(&opts);
2198 return handle_io_open_error(s, ret, os->temp_path);
2201 char *prefetch_url = use_rename ? NULL : os->filename;
2202 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2206 //write out the data immediately in streaming mode
2207 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2209 uint8_t *buf = NULL;
2210 if (!os->written_len)
2211 write_styp(os->ctx->pb);
2212 avio_flush(os->ctx->pb);
2213 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2215 avio_write(os->out, buf + os->written_len, len - os->written_len);
2216 avio_flush(os->out);
2218 os->written_len = len;
2224 static int dash_write_trailer(AVFormatContext *s)
2226 DASHContext *c = s->priv_data;
2229 if (s->nb_streams > 0) {
2230 OutputStream *os = &c->streams[0];
2231 // If no segments have been written so far, try to do a crude
2232 // guess of the segment duration
2233 if (!c->last_duration)
2234 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2235 s->streams[0]->time_base,
2237 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2238 s->streams[0]->time_base,
2241 dash_flush(s, 1, -1);
2243 if (c->remove_at_exit) {
2244 for (i = 0; i < s->nb_streams; ++i) {
2245 OutputStream *os = &c->streams[i];
2246 dashenc_delete_media_segments(s, os, os->nb_segments);
2247 dashenc_delete_segment_file(s, os->initfile);
2248 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2249 char filename[1024];
2250 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2251 dashenc_delete_file(s, filename);
2254 dashenc_delete_file(s, s->url);
2256 if (c->hls_playlist && c->master_playlist_created) {
2257 char filename[1024];
2258 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2259 dashenc_delete_file(s, filename);
2266 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2268 DASHContext *c = s->priv_data;
2269 OutputStream *os = &c->streams[avpkt->stream_index];
2270 AVFormatContext *oc = os->ctx;
2271 if (oc->oformat->check_bitstream) {
2273 AVPacket pkt = *avpkt;
2274 pkt.stream_index = 0;
2275 ret = oc->oformat->check_bitstream(oc, &pkt);
2277 AVStream *st = s->streams[avpkt->stream_index];
2278 AVStream *ost = oc->streams[0];
2279 st->internal->bsfcs = ost->internal->bsfcs;
2280 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2281 ost->internal->bsfcs = NULL;
2282 ost->internal->nb_bsfcs = 0;
2289 #define OFFSET(x) offsetof(DASHContext, x)
2290 #define E AV_OPT_FLAG_ENCODING_PARAM
2291 static const AVOption options[] = {
2292 { "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 },
2293 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2294 { "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 },
2295 #if FF_API_DASH_MIN_SEG_DURATION
2296 { "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 },
2298 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2299 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2300 { "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"},
2301 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2302 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2303 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2304 { "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"},
2305 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2306 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2307 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2308 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2309 { "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 },
2310 { "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 },
2311 { "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 },
2312 { "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 },
2313 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2314 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2315 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2316 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2317 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2318 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2319 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2320 { "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},
2321 { "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 },
2322 { "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"},
2323 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2324 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2325 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2326 { "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 },
2327 { "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 },
2328 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2329 { "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},
2330 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2331 { "mpd_profile", "Set profiles. Elements and values used in the manifest may be constrained by them", OFFSET(profile), AV_OPT_TYPE_FLAGS, {.i64 = MPD_PROFILE_DASH }, 0, UINT_MAX, E, "mpd_profile"},
2332 { "dash", "MPEG-DASH ISO Base media file format live profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DASH }, 0, UINT_MAX, E, "mpd_profile"},
2333 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2334 { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2335 { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2339 static const AVClass dash_class = {
2340 .class_name = "dash muxer",
2341 .item_name = av_default_item_name,
2343 .version = LIBAVUTIL_VERSION_INT,
2346 AVOutputFormat ff_dash_muxer = {
2348 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2349 .extensions = "mpd",
2350 .priv_data_size = sizeof(DASHContext),
2351 .audio_codec = AV_CODEC_ID_AAC,
2352 .video_codec = AV_CODEC_ID_H264,
2353 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2355 .write_header = dash_write_header,
2356 .write_packet = dash_write_packet,
2357 .write_trailer = dash_write_trailer,
2358 .deinit = dash_free,
2359 .check_bitstream = dash_check_bitstream,
2360 .priv_class = &dash_class,