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 AVProducerReferenceTime 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->streaming && os->availability_time_offset && !final)
666 avio_printf(out, "availabilityTimeComplete=\"false\" ");
668 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
669 if (c->presentation_time_offset)
670 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
671 avio_printf(out, ">\n");
672 if (c->use_timeline) {
673 int64_t cur_time = 0;
674 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
675 for (i = start_index; i < os->nb_segments; ) {
676 Segment *seg = os->segments[i];
678 avio_printf(out, "\t\t\t\t\t\t<S ");
679 if (i == start_index || seg->time != cur_time) {
680 cur_time = seg->time;
681 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
683 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
684 while (i + repeat + 1 < os->nb_segments &&
685 os->segments[i + repeat + 1]->duration == seg->duration &&
686 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
689 avio_printf(out, "r=\"%d\" ", repeat);
690 avio_printf(out, "/>\n");
692 cur_time += (1 + repeat) * seg->duration;
694 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
696 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
697 } else if (c->single_file) {
698 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
699 avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
700 avio_printf(out, "\t\t\t\t\t<Initialization range=\"%"PRId64"-%"PRId64"\" />\n", os->init_start_pos, os->init_start_pos + os->init_range_length - 1);
701 for (i = start_index; i < os->nb_segments; i++) {
702 Segment *seg = os->segments[i];
703 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
704 if (seg->index_length)
705 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
706 avio_printf(out, "/>\n");
708 avio_printf(out, "\t\t\t\t</SegmentList>\n");
710 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);
711 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
712 for (i = start_index; i < os->nb_segments; i++) {
713 Segment *seg = os->segments[i];
714 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
716 avio_printf(out, "\t\t\t\t</SegmentList>\n");
718 if (!c->lhls || final) {
719 write_hls_media_playlist(os, s, representation_id, final, NULL);
724 static char *xmlescape(const char *str) {
725 int outlen = strlen(str)*3/2 + 6;
726 char *out = av_realloc(NULL, outlen + 1);
730 for (; *str; str++) {
731 if (pos + 6 > outlen) {
733 outlen = 2 * outlen + 6;
734 tmp = av_realloc(out, outlen + 1);
742 memcpy(&out[pos], "&", 5);
744 } else if (*str == '<') {
745 memcpy(&out[pos], "<", 4);
747 } else if (*str == '>') {
748 memcpy(&out[pos], ">", 4);
750 } else if (*str == '\'') {
751 memcpy(&out[pos], "'", 6);
753 } else if (*str == '\"') {
754 memcpy(&out[pos], """, 6);
764 static void write_time(AVIOContext *out, int64_t time)
766 int seconds = time / AV_TIME_BASE;
767 int fractions = time % AV_TIME_BASE;
768 int minutes = seconds / 60;
769 int hours = minutes / 60;
772 avio_printf(out, "PT");
774 avio_printf(out, "%dH", hours);
775 if (hours || minutes)
776 avio_printf(out, "%dM", minutes);
777 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
780 static void format_date(char *buf, int size, int64_t time_us)
782 struct tm *ptm, tmbuf;
783 int64_t time_ms = time_us / 1000;
784 const time_t time_s = time_ms / 1000;
785 int millisec = time_ms - (time_s * 1000);
786 ptm = gmtime_r(&time_s, &tmbuf);
789 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
794 snprintf(buf + len, size - len, ".%03dZ", millisec);
798 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
801 DASHContext *c = s->priv_data;
802 AdaptationSet *as = &c->as[as_index];
803 AVDictionaryEntry *lang, *role;
806 avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
807 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
808 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)
809 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
810 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))
811 avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
812 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
813 avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
814 avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
816 lang = av_dict_get(as->metadata, "language", NULL, 0);
818 avio_printf(out, " lang=\"%s\"", lang->value);
819 avio_printf(out, ">\n");
821 if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
822 avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
823 if (as->trick_idx >= 0)
824 avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
825 role = av_dict_get(as->metadata, "role", NULL, 0);
827 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
829 avio_printf(out, "\t\t\t%s\n", as->descriptor);
830 for (i = 0; i < s->nb_streams; i++) {
831 AVStream *st = s->streams[i];
832 OutputStream *os = &c->streams[i];
833 char bandwidth_str[64] = {'\0'};
835 if (os->as_idx - 1 != as_index)
838 if (os->bit_rate > 0)
839 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
842 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
843 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
844 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
845 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
846 avio_printf(out, " scanType=\"unknown\"");
847 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
848 avio_printf(out, " scanType=\"interlaced\"");
849 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
850 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
851 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
852 if (as->trick_idx >= 0) {
853 AdaptationSet *tas = &c->as[as->trick_idx];
854 if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
855 avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
857 if (!os->coding_dependency)
858 avio_printf(out, " codingDependency=\"false\"");
859 avio_printf(out, ">\n");
861 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
862 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
863 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
864 s->streams[i]->codecpar->channels);
866 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
867 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
868 i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
869 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
870 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
872 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
873 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
874 avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
875 output_segment_list(os, out, s, i, final);
876 avio_printf(out, "\t\t\t</Representation>\n");
878 avio_printf(out, "\t\t</AdaptationSet>\n");
883 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
885 DASHContext *c = s->priv_data;
888 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
889 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
890 return AVERROR(EINVAL);
892 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
894 return AVERROR(ENOMEM);
898 *as = &c->as[c->nb_as - 1];
899 memset(*as, 0, sizeof(**as));
900 (*as)->media_type = type;
901 (*as)->frag_type = -1;
902 (*as)->trick_idx = -1;
907 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
909 DASHContext *c = s->priv_data;
910 AdaptationSet *as = &c->as[as_idx - 1];
911 OutputStream *os = &c->streams[i];
913 if (as->media_type != s->streams[i]->codecpar->codec_type) {
914 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
915 return AVERROR(EINVAL);
916 } else if (os->as_idx) {
917 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
918 return AVERROR(EINVAL);
920 if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
921 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
922 return AVERROR(EINVAL);
930 static int parse_adaptation_sets(AVFormatContext *s)
932 DASHContext *c = s->priv_data;
933 const char *p = c->adaptation_sets;
934 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
938 // default: one AdaptationSet for each stream
940 for (i = 0; i < s->nb_streams; i++) {
941 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
945 c->streams[i].as_idx = c->nb_as;
951 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
952 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
953 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
954 // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
955 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
956 // descriptor_str should be a self-closing xml tag.
957 // seg_duration and frag_duration have the same syntax as the global options of
958 // the same name, and the former have precedence over them if set.
964 } else if (state == new_set && av_strstart(p, "id=", &p)) {
965 char id_str[10], *end_str;
968 snprintf(id_str, sizeof(id_str), "%.*s", n, p);
970 i = strtol(id_str, &end_str, 10);
971 if (id_str == end_str || i < 0 || i > c->nb_as) {
972 av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
973 return AVERROR(EINVAL);
976 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
983 state = parse_default;
984 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
985 state = parse_seg_duration;
986 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
987 state = parse_frag_duration;
988 } else if (state == parse_seg_duration || state == parse_frag_duration) {
993 snprintf(str, sizeof(str), "%.*s", n, p);
998 ret = av_parse_time(&usecs, str, 1);
1000 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
1004 if (state == parse_seg_duration)
1005 as->seg_duration = usecs;
1007 as->frag_duration = usecs;
1008 state = parse_default;
1009 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1012 n = strcspn(p, ",");
1013 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1018 if (!strcmp(type_str, "duration"))
1019 as->frag_type = FRAG_TYPE_DURATION;
1020 else if (!strcmp(type_str, "pframes"))
1021 as->frag_type = FRAG_TYPE_PFRAMES;
1022 else if (!strcmp(type_str, "every_frame"))
1023 as->frag_type = FRAG_TYPE_EVERY_FRAME;
1024 else if (!strcmp(type_str, "none"))
1025 as->frag_type = FRAG_TYPE_NONE;
1027 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1030 state = parse_default;
1031 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1032 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1033 if (n < strlen(p)) {
1034 as->descriptor = av_strndup(p, n);
1036 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1037 return AVERROR(EINVAL);
1042 state = parse_default;
1043 } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1044 char trick_id_str[10], *end_str;
1046 n = strcspn(p, ",");
1047 snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1050 as->trick_idx = strtol(trick_id_str, &end_str, 10);
1051 if (trick_id_str == end_str || as->trick_idx < 0)
1052 return AVERROR(EINVAL);
1056 state = parse_default;
1057 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1058 state = parsing_streams;
1059 } else if (state == parsing_streams) {
1060 AdaptationSet *as = &c->as[c->nb_as - 1];
1061 char idx_str[8], *end_str;
1063 n = strcspn(p, " ,");
1064 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1067 // if value is "a" or "v", map all streams of that type
1068 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1069 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1070 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1072 for (i = 0; i < s->nb_streams; i++) {
1073 if (s->streams[i]->codecpar->codec_type != type)
1076 as->media_type = s->streams[i]->codecpar->codec_type;
1078 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1081 } else { // select single stream
1082 i = strtol(idx_str, &end_str, 10);
1083 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1084 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1085 return AVERROR(EINVAL);
1087 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1089 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1090 as->media_type = s->streams[i]->codecpar->codec_type;
1093 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1102 return AVERROR(EINVAL);
1107 // check for unassigned streams
1108 for (i = 0; i < s->nb_streams; i++) {
1109 OutputStream *os = &c->streams[i];
1111 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1112 return AVERROR(EINVAL);
1116 // check references for trick mode AdaptationSet
1117 for (i = 0; i < c->nb_as; i++) {
1119 if (as->trick_idx < 0)
1121 for (n = 0; n < c->nb_as; n++) {
1122 if (c->as[n].id == as->trick_idx)
1125 if (n >= c->nb_as) {
1126 av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1127 return AVERROR(EINVAL);
1134 static int write_manifest(AVFormatContext *s, int final)
1136 DASHContext *c = s->priv_data;
1138 char temp_filename[1024];
1140 const char *proto = avio_find_protocol_name(s->url);
1141 int use_rename = proto && !strcmp(proto, "file");
1142 static unsigned int warned_non_file = 0;
1143 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1144 AVDictionary *opts = NULL;
1146 if (!use_rename && !warned_non_file++)
1147 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1149 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1150 set_http_options(&opts, c);
1151 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1152 av_dict_free(&opts);
1154 return handle_io_open_error(s, ret, temp_filename);
1157 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1158 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1159 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1160 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1161 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1163 if (c->profile & MPD_PROFILE_DASH)
1164 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1165 if (c->profile & MPD_PROFILE_DVB)
1166 avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1167 avio_printf(out, "\ttype=\"%s\"\n",
1168 final ? "static" : "dynamic");
1170 avio_printf(out, "\tmediaPresentationDuration=\"");
1171 write_time(out, c->total_duration);
1172 avio_printf(out, "\"\n");
1174 int64_t update_period = c->last_duration / AV_TIME_BASE;
1176 if (c->use_template && !c->use_timeline)
1177 update_period = 500;
1178 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1180 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1181 if (c->availability_start_time[0])
1182 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1183 format_date(now_str, sizeof(now_str), av_gettime());
1185 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1186 if (c->window_size && c->use_template) {
1187 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1188 write_time(out, c->last_duration * c->window_size);
1189 avio_printf(out, "\"\n");
1192 avio_printf(out, "\tminBufferTime=\"");
1193 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1194 avio_printf(out, "\">\n");
1195 avio_printf(out, "\t<ProgramInformation>\n");
1197 char *escaped = xmlescape(title->value);
1198 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1201 avio_printf(out, "\t</ProgramInformation>\n");
1202 if (!final && c->target_latency && c->target_latency_refid >= 0) {
1203 avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1204 avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1205 if (s->nb_streams > 1)
1206 avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1207 avio_printf(out, "/>\n");
1208 avio_printf(out, "\t</ServiceDescription>\n");
1211 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1212 OutputStream *os = &c->streams[0];
1213 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1214 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1215 avio_printf(out, "\t<Period id=\"0\" start=\"");
1216 write_time(out, start_time);
1217 avio_printf(out, "\">\n");
1219 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1222 for (i = 0; i < c->nb_as; i++) {
1223 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1226 avio_printf(out, "\t</Period>\n");
1228 if (c->utc_timing_url)
1229 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1231 avio_printf(out, "</MPD>\n");
1233 dashenc_io_close(s, &c->mpd_out, temp_filename);
1236 if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1240 if (c->hls_playlist) {
1241 char filename_hls[1024];
1242 const char *audio_group = "A1";
1243 char audio_codec_str[128] = "\0";
1245 int max_audio_bitrate = 0;
1247 // Publish master playlist only the configured rate
1248 if (c->master_playlist_created && (!c->master_publish_rate ||
1249 c->streams[0].segment_index % c->master_publish_rate))
1253 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1255 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1257 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1259 set_http_options(&opts, c);
1260 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1261 av_dict_free(&opts);
1263 return handle_io_open_error(s, ret, temp_filename);
1266 ff_hls_write_playlist_version(c->m3u8_out, 7);
1268 for (i = 0; i < s->nb_streams; i++) {
1269 char playlist_file[64];
1270 AVStream *st = s->streams[i];
1271 OutputStream *os = &c->streams[i];
1272 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1274 if (os->segment_type != SEGMENT_TYPE_MP4)
1276 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1277 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1278 playlist_file, NULL, i, is_default);
1279 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1280 os->muxer_overhead, max_audio_bitrate);
1281 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1282 if (strlen(audio_codec_str))
1283 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1284 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1289 for (i = 0; i < s->nb_streams; i++) {
1290 char playlist_file[64];
1291 char codec_str[128];
1292 AVStream *st = s->streams[i];
1293 OutputStream *os = &c->streams[i];
1294 char *agroup = NULL;
1295 char *codec_str_ptr = NULL;
1296 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1297 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1299 if (os->segment_type != SEGMENT_TYPE_MP4)
1301 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1302 if (max_audio_bitrate) {
1303 agroup = (char *)audio_group;
1304 stream_bitrate += max_audio_bitrate;
1305 av_strlcat(codec_str, ",", sizeof(codec_str));
1306 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1308 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1309 codec_str_ptr = codec_str;
1311 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1312 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1313 playlist_file, agroup,
1314 codec_str_ptr, NULL, NULL);
1316 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1318 if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1320 c->master_playlist_created = 1;
1326 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1328 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1330 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1334 static int dash_init(AVFormatContext *s)
1336 DASHContext *c = s->priv_data;
1339 char basename[1024];
1341 c->nr_of_streams_to_flush = 0;
1342 if (c->single_file_name)
1345 c->use_template = 0;
1348 av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1349 return AVERROR(EINVAL);
1351 #if FF_API_DASH_MIN_SEG_DURATION
1352 if (c->min_seg_duration != 5000000) {
1353 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1354 c->seg_duration = c->min_seg_duration;
1357 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1358 av_log(s, AV_LOG_ERROR,
1359 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1360 return AVERROR_EXPERIMENTAL;
1363 if (c->lhls && !c->streaming) {
1364 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1368 if (c->lhls && !c->hls_playlist) {
1369 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1373 if (c->ldash && !c->streaming) {
1374 av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1378 if (c->target_latency && !c->streaming) {
1379 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1380 c->target_latency = 0;
1383 if (c->global_sidx && !c->single_file) {
1384 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1388 if (c->global_sidx && c->streaming) {
1389 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1392 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1393 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1394 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1397 if (c->write_prft < 0) {
1398 c->write_prft = c->ldash;
1400 av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1403 if (c->write_prft && !c->utc_timing_url) {
1404 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1408 if (c->write_prft && !c->streaming) {
1409 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1413 if (c->ldash && !c->write_prft) {
1414 av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1417 if (c->target_latency && !c->write_prft) {
1418 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1419 c->target_latency = 0;
1422 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1423 ptr = strrchr(c->dirname, '/');
1425 av_strlcpy(basename, &ptr[1], sizeof(basename));
1428 c->dirname[0] = '\0';
1429 av_strlcpy(basename, s->url, sizeof(basename));
1432 ptr = strrchr(basename, '.');
1436 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1438 return AVERROR(ENOMEM);
1440 if ((ret = parse_adaptation_sets(s)) < 0)
1443 if ((ret = init_segment_types(s)) < 0)
1446 for (i = 0; i < s->nb_streams; i++) {
1447 OutputStream *os = &c->streams[i];
1448 AdaptationSet *as = &c->as[os->as_idx - 1];
1449 AVFormatContext *ctx;
1451 AVDictionary *opts = NULL;
1452 char filename[1024];
1454 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1455 if (!os->bit_rate) {
1456 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1457 AV_LOG_ERROR : AV_LOG_WARNING;
1458 av_log(s, level, "No bit rate set for stream %d\n", i);
1459 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1460 return AVERROR(EINVAL);
1463 // copy AdaptationSet language and role from stream metadata
1464 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1465 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1467 if (c->init_seg_name) {
1468 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1469 if (!os->init_seg_name)
1470 return AVERROR(ENOMEM);
1472 if (c->media_seg_name) {
1473 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1474 if (!os->media_seg_name)
1475 return AVERROR(ENOMEM);
1477 if (c->single_file_name) {
1478 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1479 if (!os->single_file_name)
1480 return AVERROR(ENOMEM);
1483 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1484 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1485 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1486 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1487 av_log(s, AV_LOG_WARNING,
1488 "One or many segment file names doesn't end with .webm. "
1489 "Override -init_seg_name and/or -media_seg_name and/or "
1490 "-single_file_name to end with the extension .webm\n");
1493 // Streaming not supported as matroskaenc buffers internally before writing the output
1494 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1499 os->ctx = ctx = avformat_alloc_context();
1501 return AVERROR(ENOMEM);
1503 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1505 return AVERROR_MUXER_NOT_FOUND;
1506 ctx->interrupt_callback = s->interrupt_callback;
1507 ctx->opaque = s->opaque;
1508 ctx->io_close = s->io_close;
1509 ctx->io_open = s->io_open;
1510 ctx->strict_std_compliance = s->strict_std_compliance;
1512 if (!(st = avformat_new_stream(ctx, NULL)))
1513 return AVERROR(ENOMEM);
1514 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1515 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1516 st->time_base = s->streams[i]->time_base;
1517 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1518 ctx->avoid_negative_ts = s->avoid_negative_ts;
1519 ctx->flags = s->flags;
1521 os->parser = av_parser_init(st->codecpar->codec_id);
1523 os->parser_avctx = avcodec_alloc_context3(NULL);
1524 if (!os->parser_avctx)
1525 return AVERROR(ENOMEM);
1526 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1529 // We only want to parse frame headers
1530 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1533 if (c->single_file) {
1534 if (os->single_file_name)
1535 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1537 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1539 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1541 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1542 set_http_options(&opts, c);
1543 if (!c->single_file) {
1544 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1546 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1548 ctx->url = av_strdup(filename);
1549 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1551 av_dict_free(&opts);
1554 os->init_start_pos = 0;
1556 av_dict_copy(&opts, c->format_options, 0);
1557 if (!as->seg_duration)
1558 as->seg_duration = c->seg_duration;
1559 if (!as->frag_duration)
1560 as->frag_duration = c->frag_duration;
1561 if (as->frag_type < 0)
1562 as->frag_type = c->frag_type;
1563 os->seg_duration = as->seg_duration;
1564 os->frag_duration = as->frag_duration;
1565 os->frag_type = as->frag_type;
1567 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1568 av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1569 return AVERROR(EINVAL);
1572 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1573 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1574 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1576 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1577 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1578 return AVERROR(EINVAL);
1580 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1581 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1582 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1583 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1585 if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1586 // Set this now if a parser isn't used
1587 os->coding_dependency = 1;
1589 if (os->segment_type == SEGMENT_TYPE_MP4) {
1591 // skip_sidx : Reduce bitrate overhead
1592 // skip_trailer : Avoids growing memory usage with time
1593 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1596 av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1598 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1600 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1601 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1603 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1604 if (os->frag_type == FRAG_TYPE_DURATION)
1605 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1607 av_dict_set(&opts, "write_prft", "wallclock", 0);
1609 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1610 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1611 av_dict_set_int(&opts, "dash", 1, 0);
1612 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1613 av_dict_set_int(&opts, "live", 1, 0);
1615 ret = avformat_init_output(ctx, &opts);
1616 av_dict_free(&opts);
1620 avio_flush(ctx->pb);
1622 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1624 s->streams[i]->time_base = st->time_base;
1625 // If the muxer wants to shift timestamps, request to have them shifted
1626 // already before being handed to this muxer, so we don't have mismatches
1627 // between the MPD and the actual segments.
1628 s->avoid_negative_ts = ctx->avoid_negative_ts;
1629 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1630 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1632 if (avg_frame_rate.num > 0) {
1633 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1634 as->min_frame_rate = avg_frame_rate;
1635 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1636 as->max_frame_rate = avg_frame_rate;
1638 as->ambiguous_frame_rate = 1;
1641 if (st->codecpar->width > as->max_width)
1642 as->max_width = st->codecpar->width;
1643 if (st->codecpar->height > as->max_height)
1644 as->max_height = st->codecpar->height;
1646 if (st->sample_aspect_ratio.num)
1647 os->sar = st->sample_aspect_ratio;
1649 os->sar = (AVRational){1,1};
1650 av_reduce(&par.num, &par.den,
1651 st->codecpar->width * (int64_t)os->sar.num,
1652 st->codecpar->height * (int64_t)os->sar.den,
1655 if (as->par.num && av_cmp_q(par, as->par)) {
1656 av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
1657 return AVERROR(EINVAL);
1664 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1665 sizeof(os->codec_str));
1666 os->first_pts = AV_NOPTS_VALUE;
1667 os->max_pts = AV_NOPTS_VALUE;
1668 os->last_dts = AV_NOPTS_VALUE;
1669 os->segment_index = 1;
1671 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1672 c->nr_of_streams_to_flush++;
1675 if (!c->has_video && c->seg_duration <= 0) {
1676 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1677 return AVERROR(EINVAL);
1679 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1680 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1682 c->nr_of_streams_flushed = 0;
1683 c->target_latency_refid = -1;
1688 static int dash_write_header(AVFormatContext *s)
1690 DASHContext *c = s->priv_data;
1692 for (i = 0; i < s->nb_streams; i++) {
1693 OutputStream *os = &c->streams[i];
1694 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1697 // Flush init segment
1698 // Only for WebM segment, since for mp4 delay_moov is set and
1699 // the init segment is thus flushed after the first packets.
1700 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1701 (ret = flush_init_segment(s, os)) < 0)
1707 static int add_segment(OutputStream *os, const char *file,
1708 int64_t time, int64_t duration,
1709 int64_t start_pos, int64_t range_length,
1710 int64_t index_length, int next_exp_index)
1714 if (os->nb_segments >= os->segments_size) {
1715 os->segments_size = (os->segments_size + 1) * 2;
1716 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1717 os->segments_size)) < 0) {
1718 os->segments_size = 0;
1719 os->nb_segments = 0;
1723 seg = av_mallocz(sizeof(*seg));
1725 return AVERROR(ENOMEM);
1726 av_strlcpy(seg->file, file, sizeof(seg->file));
1728 seg->duration = duration;
1729 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1730 seg->duration += seg->time;
1733 seg->start_pos = start_pos;
1734 seg->range_length = range_length;
1735 seg->index_length = index_length;
1736 os->segments[os->nb_segments++] = seg;
1737 os->segment_index++;
1738 //correcting the segment index if it has fallen behind the expected value
1739 if (os->segment_index < next_exp_index) {
1740 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1741 file, os->segment_index, next_exp_index);
1742 os->segment_index = next_exp_index;
1747 static void write_styp(AVIOContext *pb)
1750 ffio_wfourcc(pb, "styp");
1751 ffio_wfourcc(pb, "msdh");
1752 avio_wb32(pb, 0); /* minor */
1753 ffio_wfourcc(pb, "msdh");
1754 ffio_wfourcc(pb, "msix");
1757 static void find_index_range(AVFormatContext *s, const char *full_path,
1758 int64_t pos, int *index_length)
1764 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1767 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1768 ff_format_io_close(s, &pb);
1771 ret = avio_read(pb, buf, 8);
1772 ff_format_io_close(s, &pb);
1775 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1777 *index_length = AV_RB32(&buf[0]);
1780 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1781 AVPacket *pkt, AVRational *frame_rate)
1783 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1785 int ret, extradata_size;
1787 if (par->extradata_size)
1790 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1791 if (!extradata_size)
1794 ret = ff_alloc_extradata(par, extradata_size);
1798 memcpy(par->extradata, extradata, extradata_size);
1800 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1805 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1806 DASHContext *c = s->priv_data;
1807 int http_base_proto = ff_is_http_proto(filename);
1809 if (http_base_proto) {
1810 AVIOContext *out = NULL;
1811 AVDictionary *http_opts = NULL;
1813 set_http_options(&http_opts, c);
1814 av_dict_set(&http_opts, "method", "DELETE", 0);
1816 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1817 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1820 av_dict_free(&http_opts);
1821 ff_format_io_close(s, &out);
1823 int res = avpriv_io_delete(filename);
1825 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1826 av_strerror(res, errbuf, sizeof(errbuf));
1827 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1832 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1834 DASHContext *c = s->priv_data;
1835 size_t dirname_len, file_len;
1836 char filename[1024];
1838 dirname_len = strlen(c->dirname);
1839 if (dirname_len >= sizeof(filename)) {
1840 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1841 (uint64_t)dirname_len, c->dirname);
1842 return AVERROR(ENAMETOOLONG);
1845 memcpy(filename, c->dirname, dirname_len);
1847 file_len = strlen(file);
1848 if ((dirname_len + file_len) >= sizeof(filename)) {
1849 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1850 (uint64_t)(dirname_len + file_len), c->dirname, file);
1851 return AVERROR(ENAMETOOLONG);
1854 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1855 dashenc_delete_file(s, filename);
1860 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1862 for (int i = 0; i < remove_count; ++i) {
1863 dashenc_delete_segment_file(s, os->segments[i]->file);
1865 // Delete the segment regardless of whether the file was successfully deleted
1866 av_free(os->segments[i]);
1869 os->nb_segments -= remove_count;
1870 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1873 static int dash_flush(AVFormatContext *s, int final, int stream)
1875 DASHContext *c = s->priv_data;
1878 const char *proto = avio_find_protocol_name(s->url);
1879 int use_rename = proto && !strcmp(proto, "file");
1881 int cur_flush_segment_index = 0, next_exp_index = -1;
1883 cur_flush_segment_index = c->streams[stream].segment_index;
1885 //finding the next segment's expected index, based on the current pts value
1886 if (c->use_template && !c->use_timeline && c->index_correction &&
1887 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1888 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1889 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1890 c->streams[stream].first_pts,
1891 s->streams[stream]->time_base,
1893 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1897 for (i = 0; i < s->nb_streams; i++) {
1898 OutputStream *os = &c->streams[i];
1899 AVStream *st = s->streams[i];
1900 int range_length, index_length = 0;
1902 if (!os->packets_written)
1905 // Flush the single stream that got a keyframe right now.
1906 // Flush all audio streams as well, in sync with video keyframes,
1907 // but not the other video streams.
1908 if (stream >= 0 && i != stream) {
1909 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1910 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1912 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1914 // Make sure we don't flush audio streams multiple times, when
1915 // all video streams are flushed one at a time.
1916 if (c->has_video && os->segment_index > cur_flush_segment_index)
1921 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1923 ret = flush_dynbuf(c, os, &range_length);
1926 os->packets_written = 0;
1928 if (c->single_file) {
1929 find_index_range(s, os->full_path, os->pos, &index_length);
1931 dashenc_io_close(s, &os->out, os->temp_path);
1934 ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1940 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1944 if (!os->muxer_overhead && os->max_pts > os->start_pts)
1945 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1947 av_rescale_q(os->max_pts - os->start_pts,
1948 st->time_base, AV_TIME_BASE_Q);
1949 os->total_pkt_size = 0;
1950 os->total_pkt_duration = 0;
1952 if (!os->bit_rate) {
1953 // calculate average bitrate of first segment
1954 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1958 os->bit_rate = bitrate;
1960 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1961 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1963 os->pos += range_length;
1966 if (c->window_size) {
1967 for (i = 0; i < s->nb_streams; i++) {
1968 OutputStream *os = &c->streams[i];
1969 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1970 if (remove_count > 0)
1971 dashenc_delete_media_segments(s, os, remove_count);
1976 for (i = 0; i < s->nb_streams; i++) {
1977 OutputStream *os = &c->streams[i];
1978 if (os->ctx && os->ctx_inited) {
1979 int64_t file_size = avio_tell(os->ctx->pb);
1980 av_write_trailer(os->ctx);
1981 if (c->global_sidx) {
1982 int j, start_index, start_number;
1983 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1984 get_start_index_number(os, c, &start_index, &start_number);
1985 if (start_index >= os->nb_segments ||
1986 os->segment_type != SEGMENT_TYPE_MP4)
1988 os->init_range_length += sidx_size;
1989 for (j = start_index; j < os->nb_segments; j++) {
1990 Segment *seg = os->segments[j];
1991 seg->start_pos += sidx_size;
1999 if (c->has_video && !final) {
2000 c->nr_of_streams_flushed++;
2001 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
2004 c->nr_of_streams_flushed = 0;
2006 ret = write_manifest(s, final);
2011 static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
2013 OutputStream *os = &c->streams[pkt->stream_index];
2014 AVProducerReferenceTime *prft;
2017 prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
2018 if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
2019 // No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
2020 // of letting the mov muxer generate one, do it here so we can also use it for the manifest.
2021 prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT,
2022 sizeof(AVProducerReferenceTime));
2024 return AVERROR(ENOMEM);
2025 prft->wallclock = av_gettime();
2028 if (os->first_pts == AV_NOPTS_VALUE) {
2029 os->producer_reference_time = *prft;
2030 if (c->target_latency_refid < 0)
2031 c->target_latency_refid = pkt->stream_index;
2037 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
2039 DASHContext *c = s->priv_data;
2040 AVStream *st = s->streams[pkt->stream_index];
2041 OutputStream *os = &c->streams[pkt->stream_index];
2042 AdaptationSet *as = &c->as[os->as_idx - 1];
2043 int64_t seg_end_duration, elapsed_duration;
2046 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2050 // Fill in a heuristic guess of the packet duration, if none is available.
2051 // The mp4 muxer will do something similar (for the last packet in a fragment)
2052 // if nothing is set (setting it for the other packets doesn't hurt).
2053 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2054 // invoke its heuristic (this doesn't have to be identical to that algorithm),
2055 // so that we know the exact timestamps of fragments.
2056 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2057 pkt->duration = pkt->dts - os->last_dts;
2058 os->last_dts = pkt->dts;
2060 // If forcing the stream to start at 0, the mp4 muxer will set the start
2061 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2062 if (os->first_pts == AV_NOPTS_VALUE &&
2063 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
2064 pkt->pts -= pkt->dts;
2068 if (c->write_prft) {
2069 ret = dash_parse_prft(c, pkt);
2074 if (os->first_pts == AV_NOPTS_VALUE) {
2075 os->first_pts = pkt->pts;
2077 os->last_pts = pkt->pts;
2079 if (!c->availability_start_time[0]) {
2080 int64_t start_time_us = av_gettime();
2081 c->start_time_s = start_time_us / 1000000;
2082 format_date(c->availability_start_time,
2083 sizeof(c->availability_start_time), start_time_us);
2086 if (!os->packets_written)
2087 os->availability_time_offset = 0;
2089 if (!os->availability_time_offset &&
2090 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2091 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2092 AdaptationSet *as = &c->as[os->as_idx - 1];
2093 int64_t frame_duration = 0;
2095 switch (os->frag_type) {
2096 case FRAG_TYPE_DURATION:
2097 frame_duration = os->frag_duration;
2099 case FRAG_TYPE_EVERY_FRAME:
2100 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2104 os->availability_time_offset = ((double) os->seg_duration -
2105 frame_duration) / AV_TIME_BASE;
2106 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2109 if (c->use_template && !c->use_timeline) {
2110 elapsed_duration = pkt->pts - os->first_pts;
2111 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2113 elapsed_duration = pkt->pts - os->start_pts;
2114 seg_end_duration = os->seg_duration;
2118 (os->frag_type == FRAG_TYPE_PFRAMES ||
2119 as->trick_idx >= 0)) {
2120 // Parse the packets only in scenarios where it's needed
2123 av_parser_parse2(os->parser, os->parser_avctx,
2124 &data, &size, pkt->data, pkt->size,
2125 pkt->pts, pkt->dts, pkt->pos);
2127 os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2130 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2131 av_compare_ts(elapsed_duration, st->time_base,
2132 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2133 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2134 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2137 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2141 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2142 if (c->last_duration < os->last_duration*9/10 ||
2143 c->last_duration > os->last_duration*11/10) {
2144 av_log(s, AV_LOG_WARNING,
2145 "Segment durations differ too much, enable use_timeline "
2146 "and use_template, or keep a stricter keyframe interval\n");
2151 if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
2152 format_date(os->producer_reference_time_str,
2153 sizeof(os->producer_reference_time_str),
2154 os->producer_reference_time.wallclock);
2156 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2160 if (!os->packets_written) {
2161 // If we wrote a previous segment, adjust the start time of the segment
2162 // to the end of the previous one (which is the same as the mp4 muxer
2163 // does). This avoids gaps in the timeline.
2164 if (os->max_pts != AV_NOPTS_VALUE)
2165 os->start_pts = os->max_pts;
2167 os->start_pts = pkt->pts;
2169 if (os->max_pts == AV_NOPTS_VALUE)
2170 os->max_pts = pkt->pts + pkt->duration;
2172 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2174 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2175 os->frag_type == FRAG_TYPE_PFRAMES &&
2176 os->packets_written) {
2177 av_assert0(os->parser);
2178 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2179 st->codecpar->video_delay &&
2180 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2181 pkt->flags & AV_PKT_FLAG_KEY) {
2182 ret = av_write_frame(os->ctx, NULL);
2186 if (!os->availability_time_offset) {
2187 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2189 os->availability_time_offset = ((double) os->seg_duration -
2190 frag_duration) / AV_TIME_BASE;
2191 as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2196 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2197 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2198 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2201 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2204 os->packets_written++;
2205 os->total_pkt_size += pkt->size;
2206 os->total_pkt_duration += pkt->duration;
2207 os->last_flags = pkt->flags;
2209 if (!os->init_range_length)
2210 flush_init_segment(s, os);
2212 //open the output context when the first frame of a segment is ready
2213 if (!c->single_file && os->packets_written == 1) {
2214 AVDictionary *opts = NULL;
2215 const char *proto = avio_find_protocol_name(s->url);
2216 int use_rename = proto && !strcmp(proto, "file");
2217 if (os->segment_type == SEGMENT_TYPE_MP4)
2218 write_styp(os->ctx->pb);
2219 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2220 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2221 os->media_seg_name, pkt->stream_index,
2222 os->segment_index, os->bit_rate, os->start_pts);
2223 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2225 snprintf(os->temp_path, sizeof(os->temp_path),
2226 use_rename ? "%s.tmp" : "%s", os->full_path);
2227 set_http_options(&opts, c);
2228 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2229 av_dict_free(&opts);
2231 return handle_io_open_error(s, ret, os->temp_path);
2234 char *prefetch_url = use_rename ? NULL : os->filename;
2235 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2239 //write out the data immediately in streaming mode
2240 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2242 uint8_t *buf = NULL;
2243 avio_flush(os->ctx->pb);
2244 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2246 avio_write(os->out, buf + os->written_len, len - os->written_len);
2247 avio_flush(os->out);
2249 os->written_len = len;
2255 static int dash_write_trailer(AVFormatContext *s)
2257 DASHContext *c = s->priv_data;
2260 if (s->nb_streams > 0) {
2261 OutputStream *os = &c->streams[0];
2262 // If no segments have been written so far, try to do a crude
2263 // guess of the segment duration
2264 if (!c->last_duration)
2265 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2266 s->streams[0]->time_base,
2268 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2269 s->streams[0]->time_base,
2272 dash_flush(s, 1, -1);
2274 if (c->remove_at_exit) {
2275 for (i = 0; i < s->nb_streams; ++i) {
2276 OutputStream *os = &c->streams[i];
2277 dashenc_delete_media_segments(s, os, os->nb_segments);
2278 dashenc_delete_segment_file(s, os->initfile);
2279 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2280 char filename[1024];
2281 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2282 dashenc_delete_file(s, filename);
2285 dashenc_delete_file(s, s->url);
2287 if (c->hls_playlist && c->master_playlist_created) {
2288 char filename[1024];
2289 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2290 dashenc_delete_file(s, filename);
2297 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2299 DASHContext *c = s->priv_data;
2300 OutputStream *os = &c->streams[avpkt->stream_index];
2301 AVFormatContext *oc = os->ctx;
2302 if (oc->oformat->check_bitstream) {
2304 AVPacket pkt = *avpkt;
2305 pkt.stream_index = 0;
2306 ret = oc->oformat->check_bitstream(oc, &pkt);
2308 AVStream *st = s->streams[avpkt->stream_index];
2309 AVStream *ost = oc->streams[0];
2310 st->internal->bsfcs = ost->internal->bsfcs;
2311 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2312 ost->internal->bsfcs = NULL;
2313 ost->internal->nb_bsfcs = 0;
2320 #define OFFSET(x) offsetof(DASHContext, x)
2321 #define E AV_OPT_FLAG_ENCODING_PARAM
2322 static const AVOption options[] = {
2323 { "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 },
2324 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2325 { "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 },
2326 #if FF_API_DASH_MIN_SEG_DURATION
2327 { "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 },
2329 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2330 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2331 { "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"},
2332 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2333 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2334 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2335 { "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"},
2336 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2337 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2338 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2339 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2340 { "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 },
2341 { "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 },
2342 { "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 },
2343 { "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 },
2344 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2345 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2346 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2347 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2348 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2349 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2350 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2351 { "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},
2352 { "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 },
2353 { "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"},
2354 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2355 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2356 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2357 { "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 },
2358 { "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 },
2359 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2360 { "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},
2361 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2362 { "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"},
2363 { "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"},
2364 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2365 { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2366 { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2370 static const AVClass dash_class = {
2371 .class_name = "dash muxer",
2372 .item_name = av_default_item_name,
2374 .version = LIBAVUTIL_VERSION_INT,
2377 AVOutputFormat ff_dash_muxer = {
2379 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2380 .extensions = "mpd",
2381 .priv_data_size = sizeof(DASHContext),
2382 .audio_codec = AV_CODEC_ID_AAC,
2383 .video_codec = AV_CODEC_ID_H264,
2384 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2386 .write_header = dash_write_header,
2387 .write_packet = dash_write_packet,
2388 .write_trailer = dash_write_trailer,
2389 .deinit = dash_free,
2390 .check_bitstream = dash_check_bitstream,
2391 .priv_class = &dash_class,