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 int first_segment_bit_rate;
119 SegmentType segment_type; /* segment type selected for this particular stream */
120 const char *format_name;
121 const char *extension_name;
122 const char *single_file_name; /* file names selected for this particular stream */
123 const char *init_seg_name;
124 const char *media_seg_name;
129 char full_path[1024];
130 char temp_path[1024];
131 double availability_time_offset;
132 AVProducerReferenceTime producer_reference_time;
133 char producer_reference_time_str[100];
135 int64_t total_pkt_duration;
140 int coding_dependency;
143 typedef struct DASHContext {
144 const AVClass *class; /* Class for private options. */
145 char *adaptation_sets;
149 int extra_window_size;
150 #if FF_API_DASH_MIN_SEG_DURATION
151 int min_seg_duration;
153 int64_t seg_duration;
154 int64_t frag_duration;
159 OutputStream *streams;
161 int64_t last_duration;
162 int64_t total_duration;
163 char availability_start_time[100];
165 int64_t presentation_time_offset;
167 const char *single_file_name; /* file names as specified in options */
168 const char *init_seg_name;
169 const char *media_seg_name;
170 const char *utc_timing_url;
172 const char *user_agent;
173 AVDictionary *http_opts;
175 const char *hls_master_name;
177 int master_playlist_created;
178 AVIOContext *mpd_out;
179 AVIOContext *m3u8_out;
182 int index_correction;
183 AVDictionary *format_options;
185 SegmentType segment_type_option; /* segment type as specified in options */
186 int ignore_io_errors;
189 int master_publish_rate;
190 int nr_of_streams_to_flush;
191 int nr_of_streams_flushed;
194 int64_t max_gop_size;
195 int64_t max_segment_duration;
197 int64_t target_latency;
198 int target_latency_refid;
199 AVRational min_playback_rate;
200 AVRational max_playback_rate;
203 static struct codec_string {
207 { AV_CODEC_ID_VP8, "vp8" },
208 { AV_CODEC_ID_VP9, "vp9" },
209 { AV_CODEC_ID_VORBIS, "vorbis" },
210 { AV_CODEC_ID_OPUS, "opus" },
211 { AV_CODEC_ID_FLAC, "flac" },
215 static struct format_string {
216 SegmentType segment_type;
219 { SEGMENT_TYPE_AUTO, "auto" },
220 { SEGMENT_TYPE_MP4, "mp4" },
221 { SEGMENT_TYPE_WEBM, "webm" },
225 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
226 AVDictionary **options) {
227 DASHContext *c = s->priv_data;
228 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
229 int err = AVERROR_MUXER_NOT_FOUND;
230 if (!*pb || !http_base_proto || !c->http_persistent) {
231 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
232 #if CONFIG_HTTP_PROTOCOL
234 URLContext *http_url_context = ffio_geturlcontext(*pb);
235 av_assert0(http_url_context);
236 err = ff_http_do_new_request(http_url_context, filename);
238 ff_format_io_close(s, pb);
244 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
245 DASHContext *c = s->priv_data;
246 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
251 if (!http_base_proto || !c->http_persistent) {
252 ff_format_io_close(s, pb);
253 #if CONFIG_HTTP_PROTOCOL
255 URLContext *http_url_context = ffio_geturlcontext(*pb);
256 av_assert0(http_url_context);
258 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
263 static const char *get_format_str(SegmentType segment_type) {
265 for (i = 0; i < SEGMENT_TYPE_NB; i++)
266 if (formats[i].segment_type == segment_type)
267 return formats[i].str;
271 static const char *get_extension_str(SegmentType type, int single_file)
275 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
276 case SEGMENT_TYPE_WEBM: return "webm";
277 default: return NULL;
281 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
282 DASHContext *c = s->priv_data;
283 char errbuf[AV_ERROR_MAX_STRING_SIZE];
284 av_strerror(err, errbuf, sizeof(errbuf));
285 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
286 "Unable to open %s for writing: %s\n", url, errbuf);
287 return c->ignore_io_errors ? 0 : err;
290 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
292 if (segment_type == SEGMENT_TYPE_AUTO) {
293 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
294 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
295 segment_type = SEGMENT_TYPE_WEBM;
297 segment_type = SEGMENT_TYPE_MP4;
304 static int init_segment_types(AVFormatContext *s)
306 DASHContext *c = s->priv_data;
307 int has_mp4_streams = 0;
308 for (int i = 0; i < s->nb_streams; ++i) {
309 OutputStream *os = &c->streams[i];
310 SegmentType segment_type = select_segment_type(
311 c->segment_type_option, s->streams[i]->codecpar->codec_id);
312 os->segment_type = segment_type;
313 os->format_name = get_format_str(segment_type);
314 if (!os->format_name) {
315 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
316 return AVERROR_MUXER_NOT_FOUND;
318 os->extension_name = get_extension_str(segment_type, c->single_file);
319 if (!os->extension_name) {
320 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
321 return AVERROR_MUXER_NOT_FOUND;
324 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
327 if (c->hls_playlist && !has_mp4_streams) {
328 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
335 static int check_file_extension(const char *filename, const char *extension) {
337 if (!filename || !extension)
339 dot = strrchr(filename, '.');
340 if (dot && !strcmp(dot + 1, extension))
345 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
346 AVRational *frame_rate, char *str, int size) {
348 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
350 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
351 vpcc.profile, vpcc.level, vpcc.bitdepth);
353 // Default to just vp9 in case of error while finding out profile or level
354 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
355 av_strlcpy(str, "vp9", size);
360 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
361 AVRational *frame_rate, char *str, int size)
363 const AVCodecTag *tags[2] = { NULL, NULL };
367 // common Webm codecs are not part of RFC 6381
368 for (i = 0; codecs[i].id; i++)
369 if (codecs[i].id == par->codec_id) {
370 if (codecs[i].id == AV_CODEC_ID_VP9) {
371 set_vp9_codec_str(s, par, frame_rate, str, size);
373 av_strlcpy(str, codecs[i].str, size);
378 // for codecs part of RFC 6381
379 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
380 tags[0] = ff_codec_movvideo_tags;
381 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
382 tags[0] = ff_codec_movaudio_tags;
386 tag = par->codec_tag;
388 tag = av_codec_get_tag(tags, par->codec_id);
396 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
398 tags[0] = ff_mp4_obj_type;
399 oti = av_codec_get_tag(tags, par->codec_id);
401 av_strlcatf(str, size, ".%02"PRIx32, oti);
405 if (tag == MKTAG('m', 'p', '4', 'a')) {
406 if (par->extradata_size >= 2) {
407 int aot = par->extradata[0] >> 3;
409 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
410 av_strlcatf(str, size, ".%d", aot);
412 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
413 // Unimplemented, should output ProfileLevelIndication as a decimal number
414 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
416 } else if (!strcmp(str, "avc1")) {
417 uint8_t *tmpbuf = NULL;
418 uint8_t *extradata = par->extradata;
419 int extradata_size = par->extradata_size;
422 if (extradata[0] != 1) {
424 if (avio_open_dyn_buf(&pb) < 0)
426 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
427 ffio_free_dyn_buf(&pb);
430 extradata_size = avio_close_dyn_buf(pb, &extradata);
434 if (extradata_size >= 4)
435 av_strlcatf(str, size, ".%02x%02x%02x",
436 extradata[1], extradata[2], extradata[3]);
438 } else if (!strcmp(str, "av01")) {
439 AV1SequenceParameters seq;
440 if (!par->extradata_size)
442 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
445 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
446 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
447 if (seq.color_description_present_flag)
448 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
450 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
451 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
456 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
461 return AVERROR(EINVAL);
465 av_write_frame(os->ctx, NULL);
466 avio_flush(os->ctx->pb);
468 if (!c->single_file) {
470 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
473 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
478 return avio_open_dyn_buf(&os->ctx->pb);
480 *range_length = avio_tell(os->ctx->pb) - os->pos;
485 static void set_http_options(AVDictionary **options, DASHContext *c)
488 av_dict_set(options, "method", c->method, 0);
489 av_dict_copy(options, c->http_opts, 0);
491 av_dict_set(options, "user_agent", c->user_agent, 0);
492 if (c->http_persistent)
493 av_dict_set_int(options, "multiple_requests", 1, 0);
495 av_dict_set_int(options, "timeout", c->timeout, 0);
498 static void get_hls_playlist_name(char *playlist_name, int string_size,
499 const char *base_url, int id) {
501 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
503 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
506 static void get_start_index_number(OutputStream *os, DASHContext *c,
507 int *start_index, int *start_number) {
510 if (c->window_size) {
511 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
512 *start_number = FFMAX(os->segment_index - c->window_size, 1);
516 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
517 int representation_id, int final,
518 char *prefetch_url) {
519 DASHContext *c = s->priv_data;
520 int timescale = os->ctx->streams[0]->time_base.den;
521 char temp_filename_hls[1024];
522 char filename_hls[1024];
523 AVDictionary *http_opts = NULL;
524 int target_duration = 0;
526 const char *proto = avio_find_protocol_name(c->dirname);
527 int use_rename = proto && !strcmp(proto, "file");
528 int i, start_index, start_number;
529 double prog_date_time = 0;
531 get_start_index_number(os, c, &start_index, &start_number);
533 if (!c->hls_playlist || start_index >= os->nb_segments ||
534 os->segment_type != SEGMENT_TYPE_MP4)
537 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
538 c->dirname, representation_id);
540 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
542 set_http_options(&http_opts, c);
543 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
544 av_dict_free(&http_opts);
546 handle_io_open_error(s, ret, temp_filename_hls);
549 for (i = start_index; i < os->nb_segments; i++) {
550 Segment *seg = os->segments[i];
551 double duration = (double) seg->duration / timescale;
552 if (target_duration <= duration)
553 target_duration = lrint(duration);
556 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
557 start_number, PLAYLIST_TYPE_NONE, 0);
559 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
560 os->init_range_length, os->init_start_pos);
562 for (i = start_index; i < os->nb_segments; i++) {
563 Segment *seg = os->segments[i];
565 if (prog_date_time == 0) {
566 if (os->nb_segments == 1)
567 prog_date_time = c->start_time_s;
569 prog_date_time = seg->prog_date_time;
571 seg->prog_date_time = prog_date_time;
573 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
574 (double) seg->duration / timescale, 0,
575 seg->range_length, seg->start_pos, NULL,
576 c->single_file ? os->initfile : seg->file,
577 &prog_date_time, 0, 0, 0);
579 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
584 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
587 ff_hls_write_end_list(c->m3u8_out);
589 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
592 ff_rename(temp_filename_hls, filename_hls, os->ctx);
595 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
597 DASHContext *c = s->priv_data;
598 int ret, range_length;
600 ret = flush_dynbuf(c, os, &range_length);
604 os->pos = os->init_range_length = range_length;
605 if (!c->single_file) {
607 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
608 dashenc_io_close(s, &os->out, filename);
613 static void dash_free(AVFormatContext *s)
615 DASHContext *c = s->priv_data;
619 for (i = 0; i < c->nb_as; i++) {
620 av_dict_free(&c->as[i].metadata);
621 av_freep(&c->as[i].descriptor);
629 for (i = 0; i < s->nb_streams; i++) {
630 OutputStream *os = &c->streams[i];
631 if (os->ctx && os->ctx->pb) {
633 ffio_free_dyn_buf(&os->ctx->pb);
635 avio_close(os->ctx->pb);
637 ff_format_io_close(s, &os->out);
638 avformat_free_context(os->ctx);
639 avcodec_free_context(&os->parser_avctx);
640 av_parser_close(os->parser);
641 for (j = 0; j < os->nb_segments; j++)
642 av_free(os->segments[j]);
643 av_free(os->segments);
644 av_freep(&os->single_file_name);
645 av_freep(&os->init_seg_name);
646 av_freep(&os->media_seg_name);
648 av_freep(&c->streams);
650 ff_format_io_close(s, &c->mpd_out);
651 ff_format_io_close(s, &c->m3u8_out);
654 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
655 int representation_id, int final)
657 DASHContext *c = s->priv_data;
658 int i, start_index, start_number;
659 get_start_index_number(os, c, &start_index, &start_number);
661 if (c->use_template) {
662 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
663 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
664 if (!c->use_timeline) {
665 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
666 if (c->streaming && os->availability_time_offset)
667 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
668 os->availability_time_offset);
670 if (c->streaming && os->availability_time_offset && !final)
671 avio_printf(out, "availabilityTimeComplete=\"false\" ");
673 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
674 if (c->presentation_time_offset)
675 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
676 avio_printf(out, ">\n");
677 if (c->use_timeline) {
678 int64_t cur_time = 0;
679 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
680 for (i = start_index; i < os->nb_segments; ) {
681 Segment *seg = os->segments[i];
683 avio_printf(out, "\t\t\t\t\t\t<S ");
684 if (i == start_index || seg->time != cur_time) {
685 cur_time = seg->time;
686 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
688 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
689 while (i + repeat + 1 < os->nb_segments &&
690 os->segments[i + repeat + 1]->duration == seg->duration &&
691 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
694 avio_printf(out, "r=\"%d\" ", repeat);
695 avio_printf(out, "/>\n");
697 cur_time += (1 + repeat) * seg->duration;
699 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
701 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
702 } else if (c->single_file) {
703 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
704 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);
705 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);
706 for (i = start_index; i < os->nb_segments; i++) {
707 Segment *seg = os->segments[i];
708 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
709 if (seg->index_length)
710 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
711 avio_printf(out, "/>\n");
713 avio_printf(out, "\t\t\t\t</SegmentList>\n");
715 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);
716 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
717 for (i = start_index; i < os->nb_segments; i++) {
718 Segment *seg = os->segments[i];
719 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
721 avio_printf(out, "\t\t\t\t</SegmentList>\n");
723 if (!c->lhls || final) {
724 write_hls_media_playlist(os, s, representation_id, final, NULL);
729 static char *xmlescape(const char *str) {
730 int outlen = strlen(str)*3/2 + 6;
731 char *out = av_realloc(NULL, outlen + 1);
735 for (; *str; str++) {
736 if (pos + 6 > outlen) {
738 outlen = 2 * outlen + 6;
739 tmp = av_realloc(out, outlen + 1);
747 memcpy(&out[pos], "&", 5);
749 } else if (*str == '<') {
750 memcpy(&out[pos], "<", 4);
752 } else if (*str == '>') {
753 memcpy(&out[pos], ">", 4);
755 } else if (*str == '\'') {
756 memcpy(&out[pos], "'", 6);
758 } else if (*str == '\"') {
759 memcpy(&out[pos], """, 6);
769 static void write_time(AVIOContext *out, int64_t time)
771 int seconds = time / AV_TIME_BASE;
772 int fractions = time % AV_TIME_BASE;
773 int minutes = seconds / 60;
774 int hours = minutes / 60;
777 avio_printf(out, "PT");
779 avio_printf(out, "%dH", hours);
780 if (hours || minutes)
781 avio_printf(out, "%dM", minutes);
782 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
785 static void format_date(char *buf, int size, int64_t time_us)
787 struct tm *ptm, tmbuf;
788 int64_t time_ms = time_us / 1000;
789 const time_t time_s = time_ms / 1000;
790 int millisec = time_ms - (time_s * 1000);
791 ptm = gmtime_r(&time_s, &tmbuf);
794 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
799 snprintf(buf + len, size - len, ".%03dZ", millisec);
803 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
806 DASHContext *c = s->priv_data;
807 AdaptationSet *as = &c->as[as_index];
808 AVDictionaryEntry *lang, *role;
811 avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" startWithSAP=\"1\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
812 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
813 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)
814 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
815 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))
816 avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
817 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
818 avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
819 avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
821 lang = av_dict_get(as->metadata, "language", NULL, 0);
823 avio_printf(out, " lang=\"%s\"", lang->value);
824 avio_printf(out, ">\n");
826 if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
827 avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
828 if (as->trick_idx >= 0)
829 avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
830 role = av_dict_get(as->metadata, "role", NULL, 0);
832 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
834 avio_printf(out, "\t\t\t%s\n", as->descriptor);
835 for (i = 0; i < s->nb_streams; i++) {
836 AVStream *st = s->streams[i];
837 OutputStream *os = &c->streams[i];
838 char bandwidth_str[64] = {'\0'};
840 if (os->as_idx - 1 != as_index)
843 if (os->bit_rate > 0)
844 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->bit_rate);
846 int average_bit_rate = os->pos * 8 * AV_TIME_BASE / c->total_duration;
847 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", average_bit_rate);
848 } else if (os->first_segment_bit_rate > 0)
849 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"", os->first_segment_bit_rate);
851 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
852 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
853 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
854 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
855 avio_printf(out, " scanType=\"unknown\"");
856 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
857 avio_printf(out, " scanType=\"interlaced\"");
858 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
859 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
860 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
861 if (as->trick_idx >= 0) {
862 AdaptationSet *tas = &c->as[as->trick_idx];
863 if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
864 avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
866 if (!os->coding_dependency)
867 avio_printf(out, " codingDependency=\"false\"");
868 avio_printf(out, ">\n");
870 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
871 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
872 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
873 s->streams[i]->codecpar->channels);
875 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
876 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
877 i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
878 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
879 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
881 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
882 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
883 avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
884 output_segment_list(os, out, s, i, final);
885 avio_printf(out, "\t\t\t</Representation>\n");
887 avio_printf(out, "\t\t</AdaptationSet>\n");
892 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
894 DASHContext *c = s->priv_data;
897 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
898 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
899 return AVERROR(EINVAL);
901 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
903 return AVERROR(ENOMEM);
907 *as = &c->as[c->nb_as - 1];
908 memset(*as, 0, sizeof(**as));
909 (*as)->media_type = type;
910 (*as)->frag_type = -1;
911 (*as)->trick_idx = -1;
916 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
918 DASHContext *c = s->priv_data;
919 AdaptationSet *as = &c->as[as_idx - 1];
920 OutputStream *os = &c->streams[i];
922 if (as->media_type != s->streams[i]->codecpar->codec_type) {
923 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
924 return AVERROR(EINVAL);
925 } else if (os->as_idx) {
926 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
927 return AVERROR(EINVAL);
929 if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
930 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
931 return AVERROR(EINVAL);
939 static int parse_adaptation_sets(AVFormatContext *s)
941 DASHContext *c = s->priv_data;
942 const char *p = c->adaptation_sets;
943 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
947 // default: one AdaptationSet for each stream
949 for (i = 0; i < s->nb_streams; i++) {
950 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
954 c->streams[i].as_idx = c->nb_as;
960 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
961 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
962 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
963 // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
964 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
965 // descriptor_str should be a self-closing xml tag.
966 // seg_duration and frag_duration have the same syntax as the global options of
967 // the same name, and the former have precedence over them if set.
973 } else if (state == new_set && av_strstart(p, "id=", &p)) {
974 char id_str[10], *end_str;
977 snprintf(id_str, sizeof(id_str), "%.*s", n, p);
979 i = strtol(id_str, &end_str, 10);
980 if (id_str == end_str || i < 0 || i > c->nb_as) {
981 av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
982 return AVERROR(EINVAL);
985 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
992 state = parse_default;
993 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
994 state = parse_seg_duration;
995 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
996 state = parse_frag_duration;
997 } else if (state == parse_seg_duration || state == parse_frag_duration) {
1001 n = strcspn(p, ",");
1002 snprintf(str, sizeof(str), "%.*s", n, p);
1007 ret = av_parse_time(&usecs, str, 1);
1009 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
1013 if (state == parse_seg_duration)
1014 as->seg_duration = usecs;
1016 as->frag_duration = usecs;
1017 state = parse_default;
1018 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1021 n = strcspn(p, ",");
1022 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1027 if (!strcmp(type_str, "duration"))
1028 as->frag_type = FRAG_TYPE_DURATION;
1029 else if (!strcmp(type_str, "pframes"))
1030 as->frag_type = FRAG_TYPE_PFRAMES;
1031 else if (!strcmp(type_str, "every_frame"))
1032 as->frag_type = FRAG_TYPE_EVERY_FRAME;
1033 else if (!strcmp(type_str, "none"))
1034 as->frag_type = FRAG_TYPE_NONE;
1036 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1039 state = parse_default;
1040 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1041 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1042 if (n < strlen(p)) {
1043 as->descriptor = av_strndup(p, n);
1045 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1046 return AVERROR(EINVAL);
1051 state = parse_default;
1052 } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1053 char trick_id_str[10], *end_str;
1055 n = strcspn(p, ",");
1056 snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1059 as->trick_idx = strtol(trick_id_str, &end_str, 10);
1060 if (trick_id_str == end_str || as->trick_idx < 0)
1061 return AVERROR(EINVAL);
1065 state = parse_default;
1066 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1067 state = parsing_streams;
1068 } else if (state == parsing_streams) {
1069 AdaptationSet *as = &c->as[c->nb_as - 1];
1070 char idx_str[8], *end_str;
1072 n = strcspn(p, " ,");
1073 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1076 // if value is "a" or "v", map all streams of that type
1077 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1078 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1079 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1081 for (i = 0; i < s->nb_streams; i++) {
1082 if (s->streams[i]->codecpar->codec_type != type)
1085 as->media_type = s->streams[i]->codecpar->codec_type;
1087 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1090 } else { // select single stream
1091 i = strtol(idx_str, &end_str, 10);
1092 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1093 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1094 return AVERROR(EINVAL);
1096 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1098 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1099 as->media_type = s->streams[i]->codecpar->codec_type;
1102 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1111 return AVERROR(EINVAL);
1116 // check for unassigned streams
1117 for (i = 0; i < s->nb_streams; i++) {
1118 OutputStream *os = &c->streams[i];
1120 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1121 return AVERROR(EINVAL);
1125 // check references for trick mode AdaptationSet
1126 for (i = 0; i < c->nb_as; i++) {
1128 if (as->trick_idx < 0)
1130 for (n = 0; n < c->nb_as; n++) {
1131 if (c->as[n].id == as->trick_idx)
1134 if (n >= c->nb_as) {
1135 av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1136 return AVERROR(EINVAL);
1143 static int write_manifest(AVFormatContext *s, int final)
1145 DASHContext *c = s->priv_data;
1147 char temp_filename[1024];
1149 const char *proto = avio_find_protocol_name(s->url);
1150 int use_rename = proto && !strcmp(proto, "file");
1151 static unsigned int warned_non_file = 0;
1152 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1153 AVDictionary *opts = NULL;
1155 if (!use_rename && !warned_non_file++)
1156 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1158 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1159 set_http_options(&opts, c);
1160 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1161 av_dict_free(&opts);
1163 return handle_io_open_error(s, ret, temp_filename);
1166 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1167 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1168 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1169 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1170 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1172 if (c->profile & MPD_PROFILE_DASH)
1173 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1174 if (c->profile & MPD_PROFILE_DVB)
1175 avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1176 avio_printf(out, "\ttype=\"%s\"\n",
1177 final ? "static" : "dynamic");
1179 avio_printf(out, "\tmediaPresentationDuration=\"");
1180 write_time(out, c->total_duration);
1181 avio_printf(out, "\"\n");
1183 int64_t update_period = c->last_duration / AV_TIME_BASE;
1185 if (c->use_template && !c->use_timeline)
1186 update_period = 500;
1187 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1189 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1190 if (c->availability_start_time[0])
1191 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1192 format_date(now_str, sizeof(now_str), av_gettime());
1194 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1195 if (c->window_size && c->use_template) {
1196 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1197 write_time(out, c->last_duration * c->window_size);
1198 avio_printf(out, "\"\n");
1201 avio_printf(out, "\tmaxSegmentDuration=\"");
1202 write_time(out, c->max_segment_duration);
1203 avio_printf(out, "\"\n");
1204 avio_printf(out, "\tminBufferTime=\"");
1205 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1206 avio_printf(out, "\">\n");
1207 avio_printf(out, "\t<ProgramInformation>\n");
1209 char *escaped = xmlescape(title->value);
1210 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1213 avio_printf(out, "\t</ProgramInformation>\n");
1215 avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1216 if (!final && c->target_latency && c->target_latency_refid >= 0) {
1217 avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1218 if (s->nb_streams > 1)
1219 avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1220 avio_printf(out, "/>\n");
1222 if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
1223 av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
1224 avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
1225 av_q2d(c->min_playback_rate), av_q2d(c->max_playback_rate));
1226 avio_printf(out, "\t</ServiceDescription>\n");
1228 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1229 OutputStream *os = &c->streams[0];
1230 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1231 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1232 avio_printf(out, "\t<Period id=\"0\" start=\"");
1233 write_time(out, start_time);
1234 avio_printf(out, "\">\n");
1236 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1239 for (i = 0; i < c->nb_as; i++) {
1240 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1243 avio_printf(out, "\t</Period>\n");
1245 if (c->utc_timing_url)
1246 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1248 avio_printf(out, "</MPD>\n");
1250 dashenc_io_close(s, &c->mpd_out, temp_filename);
1253 if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1257 if (c->hls_playlist) {
1258 char filename_hls[1024];
1259 const char *audio_group = "A1";
1260 char audio_codec_str[128] = "\0";
1262 int max_audio_bitrate = 0;
1264 // Publish master playlist only the configured rate
1265 if (c->master_playlist_created && (!c->master_publish_rate ||
1266 c->streams[0].segment_index % c->master_publish_rate))
1270 snprintf(filename_hls, sizeof(filename_hls), "%s%s", c->dirname, c->hls_master_name);
1272 snprintf(filename_hls, sizeof(filename_hls), "%s", c->hls_master_name);
1274 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1276 set_http_options(&opts, c);
1277 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1278 av_dict_free(&opts);
1280 return handle_io_open_error(s, ret, temp_filename);
1283 ff_hls_write_playlist_version(c->m3u8_out, 7);
1285 for (i = 0; i < s->nb_streams; i++) {
1286 char playlist_file[64];
1287 AVStream *st = s->streams[i];
1288 OutputStream *os = &c->streams[i];
1289 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1291 if (os->segment_type != SEGMENT_TYPE_MP4)
1293 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1294 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1295 playlist_file, NULL, i, is_default);
1296 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1297 os->muxer_overhead, max_audio_bitrate);
1298 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1299 if (strlen(audio_codec_str))
1300 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1301 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1306 for (i = 0; i < s->nb_streams; i++) {
1307 char playlist_file[64];
1308 char codec_str[128];
1309 AVStream *st = s->streams[i];
1310 OutputStream *os = &c->streams[i];
1311 char *agroup = NULL;
1312 char *codec_str_ptr = NULL;
1313 int stream_bitrate = os->muxer_overhead;
1314 if (os->bit_rate > 0)
1315 stream_bitrate += os->bit_rate;
1317 stream_bitrate += os->pos * 8 * AV_TIME_BASE / c->total_duration;
1318 else if (os->first_segment_bit_rate > 0)
1319 stream_bitrate += os->first_segment_bit_rate;
1320 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1322 if (os->segment_type != SEGMENT_TYPE_MP4)
1324 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1325 if (max_audio_bitrate) {
1326 agroup = (char *)audio_group;
1327 stream_bitrate += max_audio_bitrate;
1328 av_strlcat(codec_str, ",", sizeof(codec_str));
1329 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1331 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1332 codec_str_ptr = codec_str;
1334 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1335 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1336 playlist_file, agroup,
1337 codec_str_ptr, NULL, NULL);
1339 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1341 if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1343 c->master_playlist_created = 1;
1349 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1351 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1353 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1357 static int dash_init(AVFormatContext *s)
1359 DASHContext *c = s->priv_data;
1362 char basename[1024];
1364 c->nr_of_streams_to_flush = 0;
1365 if (c->single_file_name)
1368 c->use_template = 0;
1371 av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1372 return AVERROR(EINVAL);
1374 #if FF_API_DASH_MIN_SEG_DURATION
1375 if (c->min_seg_duration != 5000000) {
1376 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1377 c->seg_duration = c->min_seg_duration;
1380 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1381 av_log(s, AV_LOG_ERROR,
1382 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1383 return AVERROR_EXPERIMENTAL;
1386 if (c->lhls && !c->streaming) {
1387 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1391 if (c->lhls && !c->hls_playlist) {
1392 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1396 if (c->ldash && !c->streaming) {
1397 av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1401 if (c->target_latency && !c->streaming) {
1402 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1403 c->target_latency = 0;
1406 if (c->global_sidx && !c->single_file) {
1407 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1411 if (c->global_sidx && c->streaming) {
1412 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1415 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1416 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1417 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1420 if (c->write_prft < 0) {
1421 c->write_prft = c->ldash;
1423 av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
1426 if (c->write_prft && !c->utc_timing_url) {
1427 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1431 if (c->write_prft && !c->streaming) {
1432 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1436 if (c->ldash && !c->write_prft) {
1437 av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
1440 if (c->target_latency && !c->write_prft) {
1441 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1442 c->target_latency = 0;
1445 if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
1446 av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higer than the Maximum. Both will be ignored\n");
1447 c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
1450 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1451 ptr = strrchr(c->dirname, '/');
1453 av_strlcpy(basename, &ptr[1], sizeof(basename));
1456 c->dirname[0] = '\0';
1457 av_strlcpy(basename, s->url, sizeof(basename));
1460 ptr = strrchr(basename, '.');
1464 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1466 return AVERROR(ENOMEM);
1468 if ((ret = parse_adaptation_sets(s)) < 0)
1471 if ((ret = init_segment_types(s)) < 0)
1474 for (i = 0; i < s->nb_streams; i++) {
1475 OutputStream *os = &c->streams[i];
1476 AdaptationSet *as = &c->as[os->as_idx - 1];
1477 AVFormatContext *ctx;
1479 AVDictionary *opts = NULL;
1480 char filename[1024];
1482 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1483 if (!os->bit_rate) {
1484 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1485 AV_LOG_ERROR : AV_LOG_WARNING;
1486 av_log(s, level, "No bit rate set for stream %d\n", i);
1487 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1488 return AVERROR(EINVAL);
1491 // copy AdaptationSet language and role from stream metadata
1492 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1493 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1495 if (c->init_seg_name) {
1496 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1497 if (!os->init_seg_name)
1498 return AVERROR(ENOMEM);
1500 if (c->media_seg_name) {
1501 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1502 if (!os->media_seg_name)
1503 return AVERROR(ENOMEM);
1505 if (c->single_file_name) {
1506 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1507 if (!os->single_file_name)
1508 return AVERROR(ENOMEM);
1511 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1512 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1513 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1514 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1515 av_log(s, AV_LOG_WARNING,
1516 "One or many segment file names doesn't end with .webm. "
1517 "Override -init_seg_name and/or -media_seg_name and/or "
1518 "-single_file_name to end with the extension .webm\n");
1521 // Streaming not supported as matroskaenc buffers internally before writing the output
1522 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1527 os->ctx = ctx = avformat_alloc_context();
1529 return AVERROR(ENOMEM);
1531 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1533 return AVERROR_MUXER_NOT_FOUND;
1534 ctx->interrupt_callback = s->interrupt_callback;
1535 ctx->opaque = s->opaque;
1536 ctx->io_close = s->io_close;
1537 ctx->io_open = s->io_open;
1538 ctx->strict_std_compliance = s->strict_std_compliance;
1540 if (!(st = avformat_new_stream(ctx, NULL)))
1541 return AVERROR(ENOMEM);
1542 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1543 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1544 st->time_base = s->streams[i]->time_base;
1545 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1546 ctx->avoid_negative_ts = s->avoid_negative_ts;
1547 ctx->flags = s->flags;
1549 os->parser = av_parser_init(st->codecpar->codec_id);
1551 os->parser_avctx = avcodec_alloc_context3(NULL);
1552 if (!os->parser_avctx)
1553 return AVERROR(ENOMEM);
1554 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1557 // We only want to parse frame headers
1558 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1561 if (c->single_file) {
1562 if (os->single_file_name)
1563 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1565 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1567 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1569 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1570 set_http_options(&opts, c);
1571 if (!c->single_file) {
1572 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1574 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1576 ctx->url = av_strdup(filename);
1577 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1579 av_dict_free(&opts);
1582 os->init_start_pos = 0;
1584 av_dict_copy(&opts, c->format_options, 0);
1585 if (!as->seg_duration)
1586 as->seg_duration = c->seg_duration;
1587 if (!as->frag_duration)
1588 as->frag_duration = c->frag_duration;
1589 if (as->frag_type < 0)
1590 as->frag_type = c->frag_type;
1591 os->seg_duration = as->seg_duration;
1592 os->frag_duration = as->frag_duration;
1593 os->frag_type = as->frag_type;
1595 c->max_segment_duration = FFMAX(c->max_segment_duration, as->seg_duration);
1597 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1598 av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1599 return AVERROR(EINVAL);
1602 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1603 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1604 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1606 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1607 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1608 return AVERROR(EINVAL);
1610 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1611 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1612 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1613 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1615 if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1616 // Set this now if a parser isn't used
1617 os->coding_dependency = 1;
1619 if (os->segment_type == SEGMENT_TYPE_MP4) {
1621 // skip_sidx : Reduce bitrate overhead
1622 // skip_trailer : Avoids growing memory usage with time
1623 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1626 av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1628 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1630 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1631 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1633 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1634 if (os->frag_type == FRAG_TYPE_DURATION)
1635 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1637 av_dict_set(&opts, "write_prft", "wallclock", 0);
1639 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1640 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1641 av_dict_set_int(&opts, "dash", 1, 0);
1642 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1643 av_dict_set_int(&opts, "live", 1, 0);
1645 ret = avformat_init_output(ctx, &opts);
1646 av_dict_free(&opts);
1650 avio_flush(ctx->pb);
1652 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1654 s->streams[i]->time_base = st->time_base;
1655 // If the muxer wants to shift timestamps, request to have them shifted
1656 // already before being handed to this muxer, so we don't have mismatches
1657 // between the MPD and the actual segments.
1658 s->avoid_negative_ts = ctx->avoid_negative_ts;
1659 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1660 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1662 if (avg_frame_rate.num > 0) {
1663 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1664 as->min_frame_rate = avg_frame_rate;
1665 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1666 as->max_frame_rate = avg_frame_rate;
1668 as->ambiguous_frame_rate = 1;
1671 if (st->codecpar->width > as->max_width)
1672 as->max_width = st->codecpar->width;
1673 if (st->codecpar->height > as->max_height)
1674 as->max_height = st->codecpar->height;
1676 if (st->sample_aspect_ratio.num)
1677 os->sar = st->sample_aspect_ratio;
1679 os->sar = (AVRational){1,1};
1680 av_reduce(&par.num, &par.den,
1681 st->codecpar->width * (int64_t)os->sar.num,
1682 st->codecpar->height * (int64_t)os->sar.den,
1685 if (as->par.num && av_cmp_q(par, as->par)) {
1686 av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
1687 return AVERROR(EINVAL);
1694 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1695 sizeof(os->codec_str));
1696 os->first_pts = AV_NOPTS_VALUE;
1697 os->max_pts = AV_NOPTS_VALUE;
1698 os->last_dts = AV_NOPTS_VALUE;
1699 os->segment_index = 1;
1701 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1702 c->nr_of_streams_to_flush++;
1705 if (!c->has_video && c->seg_duration <= 0) {
1706 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1707 return AVERROR(EINVAL);
1709 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1710 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1712 c->nr_of_streams_flushed = 0;
1713 c->target_latency_refid = -1;
1718 static int dash_write_header(AVFormatContext *s)
1720 DASHContext *c = s->priv_data;
1722 for (i = 0; i < s->nb_streams; i++) {
1723 OutputStream *os = &c->streams[i];
1724 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1727 // Flush init segment
1728 // Only for WebM segment, since for mp4 delay_moov is set and
1729 // the init segment is thus flushed after the first packets.
1730 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1731 (ret = flush_init_segment(s, os)) < 0)
1737 static int add_segment(OutputStream *os, const char *file,
1738 int64_t time, int64_t duration,
1739 int64_t start_pos, int64_t range_length,
1740 int64_t index_length, int next_exp_index)
1744 if (os->nb_segments >= os->segments_size) {
1745 os->segments_size = (os->segments_size + 1) * 2;
1746 if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
1747 os->segments_size)) < 0) {
1748 os->segments_size = 0;
1749 os->nb_segments = 0;
1753 seg = av_mallocz(sizeof(*seg));
1755 return AVERROR(ENOMEM);
1756 av_strlcpy(seg->file, file, sizeof(seg->file));
1758 seg->duration = duration;
1759 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1760 seg->duration += seg->time;
1763 seg->start_pos = start_pos;
1764 seg->range_length = range_length;
1765 seg->index_length = index_length;
1766 os->segments[os->nb_segments++] = seg;
1767 os->segment_index++;
1768 //correcting the segment index if it has fallen behind the expected value
1769 if (os->segment_index < next_exp_index) {
1770 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1771 file, os->segment_index, next_exp_index);
1772 os->segment_index = next_exp_index;
1777 static void write_styp(AVIOContext *pb)
1780 ffio_wfourcc(pb, "styp");
1781 ffio_wfourcc(pb, "msdh");
1782 avio_wb32(pb, 0); /* minor */
1783 ffio_wfourcc(pb, "msdh");
1784 ffio_wfourcc(pb, "msix");
1787 static void find_index_range(AVFormatContext *s, const char *full_path,
1788 int64_t pos, int *index_length)
1794 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1797 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1798 ff_format_io_close(s, &pb);
1801 ret = avio_read(pb, buf, 8);
1802 ff_format_io_close(s, &pb);
1805 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1807 *index_length = AV_RB32(&buf[0]);
1810 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1811 AVPacket *pkt, AVRational *frame_rate)
1813 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1815 int ret, extradata_size;
1817 if (par->extradata_size)
1820 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1821 if (!extradata_size)
1824 ret = ff_alloc_extradata(par, extradata_size);
1828 memcpy(par->extradata, extradata, extradata_size);
1830 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1835 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1836 DASHContext *c = s->priv_data;
1837 int http_base_proto = ff_is_http_proto(filename);
1839 if (http_base_proto) {
1840 AVIOContext *out = NULL;
1841 AVDictionary *http_opts = NULL;
1843 set_http_options(&http_opts, c);
1844 av_dict_set(&http_opts, "method", "DELETE", 0);
1846 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1847 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1850 av_dict_free(&http_opts);
1851 ff_format_io_close(s, &out);
1853 int res = avpriv_io_delete(filename);
1855 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1856 av_strerror(res, errbuf, sizeof(errbuf));
1857 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1862 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1864 DASHContext *c = s->priv_data;
1867 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
1869 av_bprintf(&buf, "%s%s", c->dirname, file);
1870 if (!av_bprint_is_complete(&buf)) {
1871 av_bprint_finalize(&buf, NULL);
1872 av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
1873 return AVERROR(ENOMEM);
1876 dashenc_delete_file(s, buf.str);
1878 av_bprint_finalize(&buf, NULL);
1882 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1884 for (int i = 0; i < remove_count; ++i) {
1885 dashenc_delete_segment_file(s, os->segments[i]->file);
1887 // Delete the segment regardless of whether the file was successfully deleted
1888 av_free(os->segments[i]);
1891 os->nb_segments -= remove_count;
1892 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1895 static int dash_flush(AVFormatContext *s, int final, int stream)
1897 DASHContext *c = s->priv_data;
1900 const char *proto = avio_find_protocol_name(s->url);
1901 int use_rename = proto && !strcmp(proto, "file");
1903 int cur_flush_segment_index = 0, next_exp_index = -1;
1905 cur_flush_segment_index = c->streams[stream].segment_index;
1907 //finding the next segment's expected index, based on the current pts value
1908 if (c->use_template && !c->use_timeline && c->index_correction &&
1909 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1910 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1911 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1912 c->streams[stream].first_pts,
1913 s->streams[stream]->time_base,
1915 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1919 for (i = 0; i < s->nb_streams; i++) {
1920 OutputStream *os = &c->streams[i];
1921 AVStream *st = s->streams[i];
1922 int range_length, index_length = 0;
1925 if (!os->packets_written)
1928 // Flush the single stream that got a keyframe right now.
1929 // Flush all audio streams as well, in sync with video keyframes,
1930 // but not the other video streams.
1931 if (stream >= 0 && i != stream) {
1932 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1933 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1935 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1937 // Make sure we don't flush audio streams multiple times, when
1938 // all video streams are flushed one at a time.
1939 if (c->has_video && os->segment_index > cur_flush_segment_index)
1944 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1946 ret = flush_dynbuf(c, os, &range_length);
1949 os->packets_written = 0;
1951 if (c->single_file) {
1952 find_index_range(s, os->full_path, os->pos, &index_length);
1954 dashenc_io_close(s, &os->out, os->temp_path);
1957 ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1963 duration = av_rescale_q(os->max_pts - os->start_pts, st->time_base, AV_TIME_BASE_Q);
1964 os->last_duration = FFMAX(os->last_duration, duration);
1966 if (!os->muxer_overhead && os->max_pts > os->start_pts)
1967 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1968 8 * AV_TIME_BASE) / duration;
1969 os->total_pkt_size = 0;
1970 os->total_pkt_duration = 0;
1972 if (!os->bit_rate && !os->first_segment_bit_rate) {
1973 os->first_segment_bit_rate = (int64_t) range_length * 8 * AV_TIME_BASE / duration;
1975 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1976 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1978 os->pos += range_length;
1981 if (c->window_size) {
1982 for (i = 0; i < s->nb_streams; i++) {
1983 OutputStream *os = &c->streams[i];
1984 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1985 if (remove_count > 0)
1986 dashenc_delete_media_segments(s, os, remove_count);
1991 for (i = 0; i < s->nb_streams; i++) {
1992 OutputStream *os = &c->streams[i];
1993 if (os->ctx && os->ctx_inited) {
1994 int64_t file_size = avio_tell(os->ctx->pb);
1995 av_write_trailer(os->ctx);
1996 if (c->global_sidx) {
1997 int j, start_index, start_number;
1998 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1999 get_start_index_number(os, c, &start_index, &start_number);
2000 if (start_index >= os->nb_segments ||
2001 os->segment_type != SEGMENT_TYPE_MP4)
2003 os->init_range_length += sidx_size;
2004 for (j = start_index; j < os->nb_segments; j++) {
2005 Segment *seg = os->segments[j];
2006 seg->start_pos += sidx_size;
2014 if (c->has_video && !final) {
2015 c->nr_of_streams_flushed++;
2016 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
2019 c->nr_of_streams_flushed = 0;
2021 ret = write_manifest(s, final);
2026 static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
2028 OutputStream *os = &c->streams[pkt->stream_index];
2029 AVProducerReferenceTime *prft;
2032 prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
2033 if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
2034 // No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
2035 // of letting the mov muxer generate one, do it here so we can also use it for the manifest.
2036 prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT,
2037 sizeof(AVProducerReferenceTime));
2039 return AVERROR(ENOMEM);
2040 prft->wallclock = av_gettime();
2043 if (os->first_pts == AV_NOPTS_VALUE) {
2044 os->producer_reference_time = *prft;
2045 if (c->target_latency_refid < 0)
2046 c->target_latency_refid = pkt->stream_index;
2052 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
2054 DASHContext *c = s->priv_data;
2055 AVStream *st = s->streams[pkt->stream_index];
2056 OutputStream *os = &c->streams[pkt->stream_index];
2057 AdaptationSet *as = &c->as[os->as_idx - 1];
2058 int64_t seg_end_duration, elapsed_duration;
2061 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2065 // Fill in a heuristic guess of the packet duration, if none is available.
2066 // The mp4 muxer will do something similar (for the last packet in a fragment)
2067 // if nothing is set (setting it for the other packets doesn't hurt).
2068 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2069 // invoke its heuristic (this doesn't have to be identical to that algorithm),
2070 // so that we know the exact timestamps of fragments.
2071 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2072 pkt->duration = pkt->dts - os->last_dts;
2073 os->last_dts = pkt->dts;
2075 // If forcing the stream to start at 0, the mp4 muxer will set the start
2076 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2077 if (os->first_pts == AV_NOPTS_VALUE &&
2078 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
2079 pkt->pts -= pkt->dts;
2083 if (c->write_prft) {
2084 ret = dash_parse_prft(c, pkt);
2089 if (os->first_pts == AV_NOPTS_VALUE) {
2090 os->first_pts = pkt->pts;
2092 os->last_pts = pkt->pts;
2094 if (!c->availability_start_time[0]) {
2095 int64_t start_time_us = av_gettime();
2096 c->start_time_s = start_time_us / 1000000;
2097 format_date(c->availability_start_time,
2098 sizeof(c->availability_start_time), start_time_us);
2101 if (!os->packets_written)
2102 os->availability_time_offset = 0;
2104 if (!os->availability_time_offset &&
2105 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2106 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2107 AdaptationSet *as = &c->as[os->as_idx - 1];
2108 int64_t frame_duration = 0;
2110 switch (os->frag_type) {
2111 case FRAG_TYPE_DURATION:
2112 frame_duration = os->frag_duration;
2114 case FRAG_TYPE_EVERY_FRAME:
2115 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2119 os->availability_time_offset = ((double) os->seg_duration -
2120 frame_duration) / AV_TIME_BASE;
2121 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2124 if (c->use_template && !c->use_timeline) {
2125 elapsed_duration = pkt->pts - os->first_pts;
2126 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2128 elapsed_duration = pkt->pts - os->start_pts;
2129 seg_end_duration = os->seg_duration;
2133 (os->frag_type == FRAG_TYPE_PFRAMES ||
2134 as->trick_idx >= 0)) {
2135 // Parse the packets only in scenarios where it's needed
2138 av_parser_parse2(os->parser, os->parser_avctx,
2139 &data, &size, pkt->data, pkt->size,
2140 pkt->pts, pkt->dts, pkt->pos);
2142 os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2145 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2146 av_compare_ts(elapsed_duration, st->time_base,
2147 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2148 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2149 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2152 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2156 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2157 if (c->last_duration < os->last_duration*9/10 ||
2158 c->last_duration > os->last_duration*11/10) {
2159 av_log(s, AV_LOG_WARNING,
2160 "Segment durations differ too much, enable use_timeline "
2161 "and use_template, or keep a stricter keyframe interval\n");
2166 if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
2167 format_date(os->producer_reference_time_str,
2168 sizeof(os->producer_reference_time_str),
2169 os->producer_reference_time.wallclock);
2171 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2175 if (!os->packets_written) {
2176 // If we wrote a previous segment, adjust the start time of the segment
2177 // to the end of the previous one (which is the same as the mp4 muxer
2178 // does). This avoids gaps in the timeline.
2179 if (os->max_pts != AV_NOPTS_VALUE)
2180 os->start_pts = os->max_pts;
2182 os->start_pts = pkt->pts;
2184 if (os->max_pts == AV_NOPTS_VALUE)
2185 os->max_pts = pkt->pts + pkt->duration;
2187 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2189 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2190 os->frag_type == FRAG_TYPE_PFRAMES &&
2191 os->packets_written) {
2192 av_assert0(os->parser);
2193 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2194 st->codecpar->video_delay &&
2195 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2196 pkt->flags & AV_PKT_FLAG_KEY) {
2197 ret = av_write_frame(os->ctx, NULL);
2201 if (!os->availability_time_offset) {
2202 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2204 os->availability_time_offset = ((double) os->seg_duration -
2205 frag_duration) / AV_TIME_BASE;
2206 as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2211 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2212 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2213 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2216 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2219 os->packets_written++;
2220 os->total_pkt_size += pkt->size;
2221 os->total_pkt_duration += pkt->duration;
2222 os->last_flags = pkt->flags;
2224 if (!os->init_range_length)
2225 flush_init_segment(s, os);
2227 //open the output context when the first frame of a segment is ready
2228 if (!c->single_file && os->packets_written == 1) {
2229 AVDictionary *opts = NULL;
2230 const char *proto = avio_find_protocol_name(s->url);
2231 int use_rename = proto && !strcmp(proto, "file");
2232 if (os->segment_type == SEGMENT_TYPE_MP4)
2233 write_styp(os->ctx->pb);
2234 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2235 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2236 os->media_seg_name, pkt->stream_index,
2237 os->segment_index, os->bit_rate, os->start_pts);
2238 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2240 snprintf(os->temp_path, sizeof(os->temp_path),
2241 use_rename ? "%s.tmp" : "%s", os->full_path);
2242 set_http_options(&opts, c);
2243 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2244 av_dict_free(&opts);
2246 return handle_io_open_error(s, ret, os->temp_path);
2249 char *prefetch_url = use_rename ? NULL : os->filename;
2250 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2254 //write out the data immediately in streaming mode
2255 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2257 uint8_t *buf = NULL;
2258 avio_flush(os->ctx->pb);
2259 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2261 avio_write(os->out, buf + os->written_len, len - os->written_len);
2262 avio_flush(os->out);
2264 os->written_len = len;
2270 static int dash_write_trailer(AVFormatContext *s)
2272 DASHContext *c = s->priv_data;
2275 if (s->nb_streams > 0) {
2276 OutputStream *os = &c->streams[0];
2277 // If no segments have been written so far, try to do a crude
2278 // guess of the segment duration
2279 if (!c->last_duration)
2280 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2281 s->streams[0]->time_base,
2283 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2284 s->streams[0]->time_base,
2287 dash_flush(s, 1, -1);
2289 if (c->remove_at_exit) {
2290 for (i = 0; i < s->nb_streams; ++i) {
2291 OutputStream *os = &c->streams[i];
2292 dashenc_delete_media_segments(s, os, os->nb_segments);
2293 dashenc_delete_segment_file(s, os->initfile);
2294 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2295 char filename[1024];
2296 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2297 dashenc_delete_file(s, filename);
2300 dashenc_delete_file(s, s->url);
2302 if (c->hls_playlist && c->master_playlist_created) {
2303 char filename[1024];
2304 snprintf(filename, sizeof(filename), "%s%s", c->dirname, c->hls_master_name);
2305 dashenc_delete_file(s, filename);
2312 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2314 DASHContext *c = s->priv_data;
2315 OutputStream *os = &c->streams[avpkt->stream_index];
2316 AVFormatContext *oc = os->ctx;
2317 if (oc->oformat->check_bitstream) {
2319 AVPacket pkt = *avpkt;
2320 pkt.stream_index = 0;
2321 ret = oc->oformat->check_bitstream(oc, &pkt);
2323 AVStream *st = s->streams[avpkt->stream_index];
2324 AVStream *ost = oc->streams[0];
2325 st->internal->bsfc = ost->internal->bsfc;
2326 ost->internal->bsfc = NULL;
2333 #define OFFSET(x) offsetof(DASHContext, x)
2334 #define E AV_OPT_FLAG_ENCODING_PARAM
2335 static const AVOption options[] = {
2336 { "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 },
2337 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2338 { "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 },
2339 #if FF_API_DASH_MIN_SEG_DURATION
2340 { "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 },
2342 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2343 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2344 { "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"},
2345 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2346 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2347 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2348 { "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"},
2349 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2350 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2351 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2352 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2353 { "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 },
2354 { "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 },
2355 { "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 },
2356 { "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 },
2357 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2358 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2359 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2360 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2361 { "hls_master_name", "HLS master playlist name", OFFSET(hls_master_name), AV_OPT_TYPE_STRING, {.str = "master.m3u8"}, 0, 0, E },
2362 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2363 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2364 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2365 { "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},
2366 { "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 },
2367 { "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"},
2368 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2369 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2370 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2371 { "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 },
2372 { "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 },
2373 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2374 { "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},
2375 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
2376 { "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"},
2377 { "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"},
2378 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2379 { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2380 { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2381 { "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2382 { "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
2386 static const AVClass dash_class = {
2387 .class_name = "dash muxer",
2388 .item_name = av_default_item_name,
2390 .version = LIBAVUTIL_VERSION_INT,
2393 AVOutputFormat ff_dash_muxer = {
2395 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2396 .extensions = "mpd",
2397 .priv_data_size = sizeof(DASHContext),
2398 .audio_codec = AV_CODEC_ID_AAC,
2399 .video_codec = AV_CODEC_ID_H264,
2400 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2402 .write_header = dash_write_header,
2403 .write_packet = dash_write_packet,
2404 .write_trailer = dash_write_trailer,
2405 .deinit = dash_free,
2406 .check_bitstream = dash_check_bitstream,
2407 .priv_class = &dash_class,