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;
98 typedef struct OutputStream {
100 int ctx_inited, as_idx;
102 AVCodecParserContext *parser;
103 AVCodecContext *parser_avctx;
106 int64_t init_start_pos, pos;
107 int init_range_length;
108 int nb_segments, segments_size, segment_index;
109 int64_t seg_duration;
110 int64_t frag_duration;
111 int64_t last_duration;
113 int64_t first_pts, start_pts, max_pts;
114 int64_t last_dts, last_pts;
117 SegmentType segment_type; /* segment type selected for this particular stream */
118 const char *format_name;
119 const char *extension_name;
120 const char *single_file_name; /* file names selected for this particular stream */
121 const char *init_seg_name;
122 const char *media_seg_name;
127 char full_path[1024];
128 char temp_path[1024];
129 double availability_time_offset;
130 int64_t producer_reference_time;
131 char producer_reference_time_str[100];
133 int64_t total_pkt_duration;
140 typedef struct DASHContext {
141 const AVClass *class; /* Class for private options. */
142 char *adaptation_sets;
146 int extra_window_size;
147 #if FF_API_DASH_MIN_SEG_DURATION
148 int min_seg_duration;
150 int64_t seg_duration;
151 int64_t frag_duration;
156 OutputStream *streams;
158 int64_t last_duration;
159 int64_t total_duration;
160 char availability_start_time[100];
162 int64_t presentation_time_offset;
164 const char *single_file_name; /* file names as specified in options */
165 const char *init_seg_name;
166 const char *media_seg_name;
167 const char *utc_timing_url;
169 const char *user_agent;
172 int master_playlist_created;
173 AVIOContext *mpd_out;
174 AVIOContext *m3u8_out;
177 int index_correction;
178 AVDictionary *format_options;
180 SegmentType segment_type_option; /* segment type as specified in options */
181 int ignore_io_errors;
184 int master_publish_rate;
185 int nr_of_streams_to_flush;
186 int nr_of_streams_flushed;
189 int64_t max_gop_size;
193 static struct codec_string {
197 { AV_CODEC_ID_VP8, "vp8" },
198 { AV_CODEC_ID_VP9, "vp9" },
199 { AV_CODEC_ID_VORBIS, "vorbis" },
200 { AV_CODEC_ID_OPUS, "opus" },
201 { AV_CODEC_ID_FLAC, "flac" },
205 static struct format_string {
206 SegmentType segment_type;
209 { SEGMENT_TYPE_AUTO, "auto" },
210 { SEGMENT_TYPE_MP4, "mp4" },
211 { SEGMENT_TYPE_WEBM, "webm" },
215 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
216 AVDictionary **options) {
217 DASHContext *c = s->priv_data;
218 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
219 int err = AVERROR_MUXER_NOT_FOUND;
220 if (!*pb || !http_base_proto || !c->http_persistent) {
221 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
222 #if CONFIG_HTTP_PROTOCOL
224 URLContext *http_url_context = ffio_geturlcontext(*pb);
225 av_assert0(http_url_context);
226 err = ff_http_do_new_request(http_url_context, filename);
228 ff_format_io_close(s, pb);
234 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
235 DASHContext *c = s->priv_data;
236 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
241 if (!http_base_proto || !c->http_persistent) {
242 ff_format_io_close(s, pb);
243 #if CONFIG_HTTP_PROTOCOL
245 URLContext *http_url_context = ffio_geturlcontext(*pb);
246 av_assert0(http_url_context);
248 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
253 static const char *get_format_str(SegmentType segment_type) {
255 for (i = 0; i < SEGMENT_TYPE_NB; i++)
256 if (formats[i].segment_type == segment_type)
257 return formats[i].str;
261 static const char *get_extension_str(SegmentType type, int single_file)
265 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
266 case SEGMENT_TYPE_WEBM: return "webm";
267 default: return NULL;
271 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
272 DASHContext *c = s->priv_data;
273 char errbuf[AV_ERROR_MAX_STRING_SIZE];
274 av_strerror(err, errbuf, sizeof(errbuf));
275 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
276 "Unable to open %s for writing: %s\n", url, errbuf);
277 return c->ignore_io_errors ? 0 : err;
280 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
282 if (segment_type == SEGMENT_TYPE_AUTO) {
283 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
284 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
285 segment_type = SEGMENT_TYPE_WEBM;
287 segment_type = SEGMENT_TYPE_MP4;
294 static int init_segment_types(AVFormatContext *s)
296 DASHContext *c = s->priv_data;
297 int has_mp4_streams = 0;
298 for (int i = 0; i < s->nb_streams; ++i) {
299 OutputStream *os = &c->streams[i];
300 SegmentType segment_type = select_segment_type(
301 c->segment_type_option, s->streams[i]->codecpar->codec_id);
302 os->segment_type = segment_type;
303 os->format_name = get_format_str(segment_type);
304 if (!os->format_name) {
305 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
306 return AVERROR_MUXER_NOT_FOUND;
308 os->extension_name = get_extension_str(segment_type, c->single_file);
309 if (!os->extension_name) {
310 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
311 return AVERROR_MUXER_NOT_FOUND;
314 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
317 if (c->hls_playlist && !has_mp4_streams) {
318 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
325 static int check_file_extension(const char *filename, const char *extension) {
327 if (!filename || !extension)
329 dot = strrchr(filename, '.');
330 if (dot && !strcmp(dot + 1, extension))
335 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
336 AVRational *frame_rate, char *str, int size) {
338 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
340 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
341 vpcc.profile, vpcc.level, vpcc.bitdepth);
343 // Default to just vp9 in case of error while finding out profile or level
344 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
345 av_strlcpy(str, "vp9", size);
350 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
351 AVRational *frame_rate, char *str, int size)
353 const AVCodecTag *tags[2] = { NULL, NULL };
357 // common Webm codecs are not part of RFC 6381
358 for (i = 0; codecs[i].id; i++)
359 if (codecs[i].id == par->codec_id) {
360 if (codecs[i].id == AV_CODEC_ID_VP9) {
361 set_vp9_codec_str(s, par, frame_rate, str, size);
363 av_strlcpy(str, codecs[i].str, size);
368 // for codecs part of RFC 6381
369 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
370 tags[0] = ff_codec_movvideo_tags;
371 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
372 tags[0] = ff_codec_movaudio_tags;
376 tag = par->codec_tag;
378 tag = av_codec_get_tag(tags, par->codec_id);
386 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
388 tags[0] = ff_mp4_obj_type;
389 oti = av_codec_get_tag(tags, par->codec_id);
391 av_strlcatf(str, size, ".%02"PRIx32, oti);
395 if (tag == MKTAG('m', 'p', '4', 'a')) {
396 if (par->extradata_size >= 2) {
397 int aot = par->extradata[0] >> 3;
399 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
400 av_strlcatf(str, size, ".%d", aot);
402 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
403 // Unimplemented, should output ProfileLevelIndication as a decimal number
404 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
406 } else if (!strcmp(str, "avc1")) {
407 uint8_t *tmpbuf = NULL;
408 uint8_t *extradata = par->extradata;
409 int extradata_size = par->extradata_size;
412 if (extradata[0] != 1) {
414 if (avio_open_dyn_buf(&pb) < 0)
416 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
417 ffio_free_dyn_buf(&pb);
420 extradata_size = avio_close_dyn_buf(pb, &extradata);
424 if (extradata_size >= 4)
425 av_strlcatf(str, size, ".%02x%02x%02x",
426 extradata[1], extradata[2], extradata[3]);
428 } else if (!strcmp(str, "av01")) {
429 AV1SequenceParameters seq;
430 if (!par->extradata_size)
432 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
435 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
436 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
437 if (seq.color_description_present_flag)
438 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
440 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
441 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
446 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
451 return AVERROR(EINVAL);
455 av_write_frame(os->ctx, NULL);
456 avio_flush(os->ctx->pb);
458 if (!c->single_file) {
460 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
463 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
468 return avio_open_dyn_buf(&os->ctx->pb);
470 *range_length = avio_tell(os->ctx->pb) - os->pos;
475 static void set_http_options(AVDictionary **options, DASHContext *c)
478 av_dict_set(options, "method", c->method, 0);
480 av_dict_set(options, "user_agent", c->user_agent, 0);
481 if (c->http_persistent)
482 av_dict_set_int(options, "multiple_requests", 1, 0);
484 av_dict_set_int(options, "timeout", c->timeout, 0);
487 static void get_hls_playlist_name(char *playlist_name, int string_size,
488 const char *base_url, int id) {
490 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
492 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
495 static void get_start_index_number(OutputStream *os, DASHContext *c,
496 int *start_index, int *start_number) {
499 if (c->window_size) {
500 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
501 *start_number = FFMAX(os->segment_index - c->window_size, 1);
505 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
506 int representation_id, int final,
507 char *prefetch_url) {
508 DASHContext *c = s->priv_data;
509 int timescale = os->ctx->streams[0]->time_base.den;
510 char temp_filename_hls[1024];
511 char filename_hls[1024];
512 AVDictionary *http_opts = NULL;
513 int target_duration = 0;
515 const char *proto = avio_find_protocol_name(c->dirname);
516 int use_rename = proto && !strcmp(proto, "file");
517 int i, start_index, start_number;
518 double prog_date_time = 0;
520 get_start_index_number(os, c, &start_index, &start_number);
522 if (!c->hls_playlist || start_index >= os->nb_segments ||
523 os->segment_type != SEGMENT_TYPE_MP4)
526 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
527 c->dirname, representation_id);
529 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
531 set_http_options(&http_opts, c);
532 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
533 av_dict_free(&http_opts);
535 handle_io_open_error(s, ret, temp_filename_hls);
538 for (i = start_index; i < os->nb_segments; i++) {
539 Segment *seg = os->segments[i];
540 double duration = (double) seg->duration / timescale;
541 if (target_duration <= duration)
542 target_duration = lrint(duration);
545 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
546 start_number, PLAYLIST_TYPE_NONE, 0);
548 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
549 os->init_range_length, os->init_start_pos);
551 for (i = start_index; i < os->nb_segments; i++) {
552 Segment *seg = os->segments[i];
554 if (prog_date_time == 0) {
555 if (os->nb_segments == 1)
556 prog_date_time = c->start_time_s;
558 prog_date_time = seg->prog_date_time;
560 seg->prog_date_time = prog_date_time;
562 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
563 (double) seg->duration / timescale, 0,
564 seg->range_length, seg->start_pos, NULL,
565 c->single_file ? os->initfile : seg->file,
566 &prog_date_time, 0, 0, 0);
568 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
573 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
576 ff_hls_write_end_list(c->m3u8_out);
578 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
581 if (avpriv_io_move(temp_filename_hls, filename_hls) < 0) {
582 av_log(os->ctx, AV_LOG_WARNING, "renaming file %s to %s failed\n\n", temp_filename_hls, filename_hls);
586 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
588 DASHContext *c = s->priv_data;
589 int ret, range_length;
591 ret = flush_dynbuf(c, os, &range_length);
595 os->pos = os->init_range_length = range_length;
596 if (!c->single_file) {
598 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
599 dashenc_io_close(s, &os->out, filename);
604 static void dash_free(AVFormatContext *s)
606 DASHContext *c = s->priv_data;
610 for (i = 0; i < c->nb_as; i++) {
611 av_dict_free(&c->as[i].metadata);
612 av_freep(&c->as[i].descriptor);
620 for (i = 0; i < s->nb_streams; i++) {
621 OutputStream *os = &c->streams[i];
622 if (os->ctx && os->ctx->pb) {
624 ffio_free_dyn_buf(&os->ctx->pb);
626 avio_close(os->ctx->pb);
628 ff_format_io_close(s, &os->out);
629 avformat_free_context(os->ctx);
630 avcodec_free_context(&os->parser_avctx);
631 av_parser_close(os->parser);
632 for (j = 0; j < os->nb_segments; j++)
633 av_free(os->segments[j]);
634 av_free(os->segments);
635 av_freep(&os->single_file_name);
636 av_freep(&os->init_seg_name);
637 av_freep(&os->media_seg_name);
639 av_freep(&c->streams);
641 ff_format_io_close(s, &c->mpd_out);
642 ff_format_io_close(s, &c->m3u8_out);
645 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
646 int representation_id, int final)
648 DASHContext *c = s->priv_data;
649 int i, start_index, start_number;
650 get_start_index_number(os, c, &start_index, &start_number);
652 if (c->use_template) {
653 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
654 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
655 if (!c->use_timeline) {
656 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
657 if (c->streaming && os->availability_time_offset)
658 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
659 os->availability_time_offset);
661 if (c->ldash && !final && os->frag_type != FRAG_TYPE_NONE &&
662 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
663 avio_printf(out, "availabilityTimeComplete=\"false\" ");
665 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
666 if (c->presentation_time_offset)
667 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
668 avio_printf(out, ">\n");
669 if (c->use_timeline) {
670 int64_t cur_time = 0;
671 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
672 for (i = start_index; i < os->nb_segments; ) {
673 Segment *seg = os->segments[i];
675 avio_printf(out, "\t\t\t\t\t\t<S ");
676 if (i == start_index || seg->time != cur_time) {
677 cur_time = seg->time;
678 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
680 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
681 while (i + repeat + 1 < os->nb_segments &&
682 os->segments[i + repeat + 1]->duration == seg->duration &&
683 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
686 avio_printf(out, "r=\"%d\" ", repeat);
687 avio_printf(out, "/>\n");
689 cur_time += (1 + repeat) * seg->duration;
691 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
693 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
694 } else if (c->single_file) {
695 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
696 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);
697 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);
698 for (i = start_index; i < os->nb_segments; i++) {
699 Segment *seg = os->segments[i];
700 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
701 if (seg->index_length)
702 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
703 avio_printf(out, "/>\n");
705 avio_printf(out, "\t\t\t\t</SegmentList>\n");
707 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);
708 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
709 for (i = start_index; i < os->nb_segments; i++) {
710 Segment *seg = os->segments[i];
711 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
713 avio_printf(out, "\t\t\t\t</SegmentList>\n");
715 if (!c->lhls || final) {
716 write_hls_media_playlist(os, s, representation_id, final, NULL);
721 static char *xmlescape(const char *str) {
722 int outlen = strlen(str)*3/2 + 6;
723 char *out = av_realloc(NULL, outlen + 1);
727 for (; *str; str++) {
728 if (pos + 6 > outlen) {
730 outlen = 2 * outlen + 6;
731 tmp = av_realloc(out, outlen + 1);
739 memcpy(&out[pos], "&", 5);
741 } else if (*str == '<') {
742 memcpy(&out[pos], "<", 4);
744 } else if (*str == '>') {
745 memcpy(&out[pos], ">", 4);
747 } else if (*str == '\'') {
748 memcpy(&out[pos], "'", 6);
750 } else if (*str == '\"') {
751 memcpy(&out[pos], """, 6);
761 static void write_time(AVIOContext *out, int64_t time)
763 int seconds = time / AV_TIME_BASE;
764 int fractions = time % AV_TIME_BASE;
765 int minutes = seconds / 60;
766 int hours = minutes / 60;
769 avio_printf(out, "PT");
771 avio_printf(out, "%dH", hours);
772 if (hours || minutes)
773 avio_printf(out, "%dM", minutes);
774 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
777 static void format_date(char *buf, int size, int64_t time_us)
779 struct tm *ptm, tmbuf;
780 int64_t time_ms = time_us / 1000;
781 const time_t time_s = time_ms / 1000;
782 int millisec = time_ms - (time_s * 1000);
783 ptm = gmtime_r(&time_s, &tmbuf);
786 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
791 snprintf(buf + len, size - len, ".%03dZ", millisec);
795 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
798 DASHContext *c = s->priv_data;
799 AdaptationSet *as = &c->as[as_index];
800 AVDictionaryEntry *lang, *role;
803 avio_printf(out, "\t\t<AdaptationSet id=\"%s\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
804 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
805 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)
806 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
807 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))
808 avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
809 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
810 avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
811 avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
813 lang = av_dict_get(as->metadata, "language", NULL, 0);
815 avio_printf(out, " lang=\"%s\"", lang->value);
816 avio_printf(out, ">\n");
818 if (!final && c->ldash && as->max_frag_duration)
819 avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
820 role = av_dict_get(as->metadata, "role", NULL, 0);
822 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
824 avio_printf(out, "\t\t\t%s\n", as->descriptor);
825 for (i = 0; i < s->nb_streams; i++) {
826 AVStream *st = s->streams[i];
827 OutputStream *os = &c->streams[i];
828 char bandwidth_str[64] = {'\0'};
830 if (os->as_idx - 1 != as_index)
833 if (os->bit_rate > 0)
834 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
837 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
838 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
839 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
840 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
841 avio_printf(out, " scanType=\"unknown\"");
842 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
843 avio_printf(out, " scanType=\"interlaced\"");
844 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
845 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
846 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
847 avio_printf(out, ">\n");
849 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
850 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
851 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
852 s->streams[i]->codecpar->channels);
854 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
855 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"encoder\" wallclockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
856 i, os->producer_reference_time_str, c->presentation_time_offset);
857 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
858 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
860 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE &&
861 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
862 avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
863 output_segment_list(os, out, s, i, final);
864 avio_printf(out, "\t\t\t</Representation>\n");
866 avio_printf(out, "\t\t</AdaptationSet>\n");
871 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
873 DASHContext *c = s->priv_data;
876 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
877 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
878 return AVERROR(EINVAL);
880 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
882 return AVERROR(ENOMEM);
886 *as = &c->as[c->nb_as - 1];
887 memset(*as, 0, sizeof(**as));
888 (*as)->media_type = type;
889 (*as)->frag_type = -1;
894 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
896 DASHContext *c = s->priv_data;
897 AdaptationSet *as = &c->as[as_idx - 1];
898 OutputStream *os = &c->streams[i];
900 if (as->media_type != s->streams[i]->codecpar->codec_type) {
901 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
902 return AVERROR(EINVAL);
903 } else if (os->as_idx) {
904 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
905 return AVERROR(EINVAL);
907 if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
908 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
909 return AVERROR(EINVAL);
917 static int parse_adaptation_sets(AVFormatContext *s)
919 DASHContext *c = s->priv_data;
920 const char *p = c->adaptation_sets;
921 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
925 // default: one AdaptationSet for each stream
927 for (i = 0; i < s->nb_streams; i++) {
928 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
930 snprintf(as->id, sizeof(as->id), "%d", i);
932 c->streams[i].as_idx = c->nb_as;
938 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
939 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
940 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2 and so on
941 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
942 // descriptor_str should be a self-closing xml tag.
943 // seg_duration and frag_duration have the same syntax as the global options of
944 // the same name, and the former have precedence over them if set.
950 } else if (state == new_set && av_strstart(p, "id=", &p)) {
952 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
956 snprintf(as->id, sizeof(as->id), "%.*s", n, p);
961 state = parse_default;
962 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
963 state = parse_seg_duration;
964 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
965 state = parse_frag_duration;
966 } else if (state == parse_seg_duration || state == parse_frag_duration) {
971 snprintf(str, sizeof(str), "%.*s", n, p);
976 ret = av_parse_time(&usecs, str, 1);
978 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
982 if (state == parse_seg_duration)
983 as->seg_duration = usecs;
985 as->frag_duration = usecs;
986 state = parse_default;
987 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
991 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
996 if (!strcmp(type_str, "duration"))
997 as->frag_type = FRAG_TYPE_DURATION;
998 else if (!strcmp(type_str, "pframes"))
999 as->frag_type = FRAG_TYPE_PFRAMES;
1000 else if (!strcmp(type_str, "every_frame"))
1001 as->frag_type = FRAG_TYPE_EVERY_FRAME;
1002 else if (!strcmp(type_str, "none"))
1003 as->frag_type = FRAG_TYPE_NONE;
1005 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1008 state = parse_default;
1009 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1010 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1011 if (n < strlen(p)) {
1012 as->descriptor = av_strndup(p, n);
1014 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1015 return AVERROR(EINVAL);
1020 state = parse_default;
1021 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1022 state = parsing_streams;
1023 } else if (state == parsing_streams) {
1024 AdaptationSet *as = &c->as[c->nb_as - 1];
1025 char idx_str[8], *end_str;
1027 n = strcspn(p, " ,");
1028 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1031 // if value is "a" or "v", map all streams of that type
1032 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1033 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1034 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1036 for (i = 0; i < s->nb_streams; i++) {
1037 if (s->streams[i]->codecpar->codec_type != type)
1040 as->media_type = s->streams[i]->codecpar->codec_type;
1042 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1045 } else { // select single stream
1046 i = strtol(idx_str, &end_str, 10);
1047 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1048 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1049 return AVERROR(EINVAL);
1051 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1053 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1054 as->media_type = s->streams[i]->codecpar->codec_type;
1057 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1066 return AVERROR(EINVAL);
1071 // check for unassigned streams
1072 for (i = 0; i < s->nb_streams; i++) {
1073 OutputStream *os = &c->streams[i];
1075 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1076 return AVERROR(EINVAL);
1082 static int write_manifest(AVFormatContext *s, int final)
1084 DASHContext *c = s->priv_data;
1086 char temp_filename[1024];
1088 const char *proto = avio_find_protocol_name(s->url);
1089 int use_rename = proto && !strcmp(proto, "file");
1090 static unsigned int warned_non_file = 0;
1091 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1092 AVDictionary *opts = NULL;
1094 if (!use_rename && !warned_non_file++)
1095 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1097 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1098 set_http_options(&opts, c);
1099 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1100 av_dict_free(&opts);
1102 return handle_io_open_error(s, ret, temp_filename);
1105 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1106 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1107 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1108 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1109 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1111 if (c->profile & MPD_PROFILE_DASH)
1112 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1113 if (c->profile & MPD_PROFILE_DVB)
1114 avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1115 avio_printf(out, "\ttype=\"%s\"\n",
1116 final ? "static" : "dynamic");
1118 avio_printf(out, "\tmediaPresentationDuration=\"");
1119 write_time(out, c->total_duration);
1120 avio_printf(out, "\"\n");
1122 int64_t update_period = c->last_duration / AV_TIME_BASE;
1124 if (c->use_template && !c->use_timeline)
1125 update_period = 500;
1126 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1128 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1129 if (c->availability_start_time[0])
1130 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1131 format_date(now_str, sizeof(now_str), av_gettime());
1133 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1134 if (c->window_size && c->use_template) {
1135 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1136 write_time(out, c->last_duration * c->window_size);
1137 avio_printf(out, "\"\n");
1140 avio_printf(out, "\tminBufferTime=\"");
1141 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1142 avio_printf(out, "\">\n");
1143 avio_printf(out, "\t<ProgramInformation>\n");
1145 char *escaped = xmlescape(title->value);
1146 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1149 avio_printf(out, "\t</ProgramInformation>\n");
1151 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1152 OutputStream *os = &c->streams[0];
1153 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1154 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1155 avio_printf(out, "\t<Period id=\"0\" start=\"");
1156 write_time(out, start_time);
1157 avio_printf(out, "\">\n");
1159 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1162 for (i = 0; i < c->nb_as; i++) {
1163 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1166 avio_printf(out, "\t</Period>\n");
1168 if (c->utc_timing_url)
1169 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1171 avio_printf(out, "</MPD>\n");
1173 dashenc_io_close(s, &c->mpd_out, temp_filename);
1176 if ((ret = avpriv_io_move(temp_filename, s->url)) < 0)
1180 if (c->hls_playlist) {
1181 char filename_hls[1024];
1182 const char *audio_group = "A1";
1183 char audio_codec_str[128] = "\0";
1185 int max_audio_bitrate = 0;
1187 // Publish master playlist only the configured rate
1188 if (c->master_playlist_created && (!c->master_publish_rate ||
1189 c->streams[0].segment_index % c->master_publish_rate))
1193 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1195 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1197 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1199 set_http_options(&opts, c);
1200 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1201 av_dict_free(&opts);
1203 return handle_io_open_error(s, ret, temp_filename);
1206 ff_hls_write_playlist_version(c->m3u8_out, 7);
1208 for (i = 0; i < s->nb_streams; i++) {
1209 char playlist_file[64];
1210 AVStream *st = s->streams[i];
1211 OutputStream *os = &c->streams[i];
1212 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1214 if (os->segment_type != SEGMENT_TYPE_MP4)
1216 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1217 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1218 playlist_file, NULL, i, is_default);
1219 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1220 os->muxer_overhead, max_audio_bitrate);
1221 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1222 if (strlen(audio_codec_str))
1223 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1224 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1229 for (i = 0; i < s->nb_streams; i++) {
1230 char playlist_file[64];
1231 char codec_str[128];
1232 AVStream *st = s->streams[i];
1233 OutputStream *os = &c->streams[i];
1234 char *agroup = NULL;
1235 char *codec_str_ptr = NULL;
1236 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1237 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1239 if (os->segment_type != SEGMENT_TYPE_MP4)
1241 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1242 if (max_audio_bitrate) {
1243 agroup = (char *)audio_group;
1244 stream_bitrate += max_audio_bitrate;
1245 av_strlcat(codec_str, ",", sizeof(codec_str));
1246 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1248 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1249 codec_str_ptr = codec_str;
1251 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1252 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1253 playlist_file, agroup,
1254 codec_str_ptr, NULL);
1256 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1258 if ((ret = avpriv_io_move(temp_filename, filename_hls)) < 0)
1260 c->master_playlist_created = 1;
1266 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1268 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1270 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1274 static int dash_init(AVFormatContext *s)
1276 DASHContext *c = s->priv_data;
1279 char basename[1024];
1281 c->nr_of_streams_to_flush = 0;
1282 if (c->single_file_name)
1285 c->use_template = 0;
1288 av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1289 return AVERROR(EINVAL);
1291 #if FF_API_DASH_MIN_SEG_DURATION
1292 if (c->min_seg_duration != 5000000) {
1293 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1294 c->seg_duration = c->min_seg_duration;
1297 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1298 av_log(s, AV_LOG_ERROR,
1299 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1300 return AVERROR_EXPERIMENTAL;
1303 if (c->lhls && !c->streaming) {
1304 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1308 if (c->lhls && !c->hls_playlist) {
1309 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1313 if (c->ldash && !c->streaming) {
1314 av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1318 if (c->global_sidx && !c->single_file) {
1319 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1323 if (c->global_sidx && c->streaming) {
1324 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1327 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1328 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1329 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1332 if (c->write_prft && !c->utc_timing_url) {
1333 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1337 if (c->write_prft && !c->streaming) {
1338 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1342 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1343 ptr = strrchr(c->dirname, '/');
1345 av_strlcpy(basename, &ptr[1], sizeof(basename));
1348 c->dirname[0] = '\0';
1349 av_strlcpy(basename, s->url, sizeof(basename));
1352 ptr = strrchr(basename, '.');
1356 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1358 return AVERROR(ENOMEM);
1360 if ((ret = parse_adaptation_sets(s)) < 0)
1363 if ((ret = init_segment_types(s)) < 0)
1366 for (i = 0; i < s->nb_streams; i++) {
1367 OutputStream *os = &c->streams[i];
1368 AdaptationSet *as = &c->as[os->as_idx - 1];
1369 AVFormatContext *ctx;
1371 AVDictionary *opts = NULL;
1372 char filename[1024];
1374 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1375 if (!os->bit_rate) {
1376 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1377 AV_LOG_ERROR : AV_LOG_WARNING;
1378 av_log(s, level, "No bit rate set for stream %d\n", i);
1379 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1380 return AVERROR(EINVAL);
1383 // copy AdaptationSet language and role from stream metadata
1384 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1385 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1387 if (c->init_seg_name) {
1388 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1389 if (!os->init_seg_name)
1390 return AVERROR(ENOMEM);
1392 if (c->media_seg_name) {
1393 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1394 if (!os->media_seg_name)
1395 return AVERROR(ENOMEM);
1397 if (c->single_file_name) {
1398 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1399 if (!os->single_file_name)
1400 return AVERROR(ENOMEM);
1403 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1404 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1405 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1406 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1407 av_log(s, AV_LOG_WARNING,
1408 "One or many segment file names doesn't end with .webm. "
1409 "Override -init_seg_name and/or -media_seg_name and/or "
1410 "-single_file_name to end with the extension .webm\n");
1413 // Streaming not supported as matroskaenc buffers internally before writing the output
1414 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1419 os->ctx = ctx = avformat_alloc_context();
1421 return AVERROR(ENOMEM);
1423 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1425 return AVERROR_MUXER_NOT_FOUND;
1426 ctx->interrupt_callback = s->interrupt_callback;
1427 ctx->opaque = s->opaque;
1428 ctx->io_close = s->io_close;
1429 ctx->io_open = s->io_open;
1430 ctx->strict_std_compliance = s->strict_std_compliance;
1432 if (!(st = avformat_new_stream(ctx, NULL)))
1433 return AVERROR(ENOMEM);
1434 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1435 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1436 st->time_base = s->streams[i]->time_base;
1437 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1438 ctx->avoid_negative_ts = s->avoid_negative_ts;
1439 ctx->flags = s->flags;
1441 os->parser = av_parser_init(st->codecpar->codec_id);
1443 os->parser_avctx = avcodec_alloc_context3(NULL);
1444 if (!os->parser_avctx)
1445 return AVERROR(ENOMEM);
1446 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1449 // We only want to parse frame headers
1450 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1453 if (c->single_file) {
1454 if (os->single_file_name)
1455 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1457 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1459 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1461 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1462 set_http_options(&opts, c);
1463 if (!c->single_file) {
1464 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1466 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1468 ctx->url = av_strdup(filename);
1469 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1471 av_dict_free(&opts);
1474 os->init_start_pos = 0;
1476 av_dict_copy(&opts, c->format_options, 0);
1477 if (!as->seg_duration)
1478 as->seg_duration = c->seg_duration;
1479 if (!as->frag_duration)
1480 as->frag_duration = c->frag_duration;
1481 if (as->frag_type < 0)
1482 as->frag_type = c->frag_type;
1483 os->seg_duration = as->seg_duration;
1484 os->frag_duration = as->frag_duration;
1485 os->frag_type = as->frag_type;
1487 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1488 av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1489 return AVERROR(EINVAL);
1492 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1493 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1494 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1496 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1497 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1498 return AVERROR(EINVAL);
1500 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1501 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1502 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1503 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1506 if (os->segment_type == SEGMENT_TYPE_MP4) {
1508 // skip_sidx : Reduce bitrate overhead
1509 // skip_trailer : Avoids growing memory usage with time
1510 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1513 av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1515 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1517 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1518 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1520 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1521 if (os->frag_type == FRAG_TYPE_DURATION)
1522 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1524 av_dict_set(&opts, "write_prft", "wallclock", 0);
1526 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1527 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1528 av_dict_set_int(&opts, "dash", 1, 0);
1529 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1530 av_dict_set_int(&opts, "live", 1, 0);
1532 ret = avformat_init_output(ctx, &opts);
1533 av_dict_free(&opts);
1537 avio_flush(ctx->pb);
1539 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1541 s->streams[i]->time_base = st->time_base;
1542 // If the muxer wants to shift timestamps, request to have them shifted
1543 // already before being handed to this muxer, so we don't have mismatches
1544 // between the MPD and the actual segments.
1545 s->avoid_negative_ts = ctx->avoid_negative_ts;
1546 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1547 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1549 if (avg_frame_rate.num > 0) {
1550 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1551 as->min_frame_rate = avg_frame_rate;
1552 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1553 as->max_frame_rate = avg_frame_rate;
1555 as->ambiguous_frame_rate = 1;
1558 if (st->codecpar->width > as->max_width)
1559 as->max_width = st->codecpar->width;
1560 if (st->codecpar->height > as->max_height)
1561 as->max_height = st->codecpar->height;
1563 if (st->sample_aspect_ratio.num)
1564 os->sar = st->sample_aspect_ratio;
1566 os->sar = (AVRational){1,1};
1567 av_reduce(&par.num, &par.den,
1568 st->codecpar->width * (int64_t)os->sar.num,
1569 st->codecpar->height * (int64_t)os->sar.den,
1572 if (as->par.num && av_cmp_q(par, as->par)) {
1573 av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
1574 return AVERROR(EINVAL);
1581 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1582 sizeof(os->codec_str));
1583 os->first_pts = AV_NOPTS_VALUE;
1584 os->max_pts = AV_NOPTS_VALUE;
1585 os->last_dts = AV_NOPTS_VALUE;
1586 os->segment_index = 1;
1588 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1589 c->nr_of_streams_to_flush++;
1592 if (!c->has_video && c->seg_duration <= 0) {
1593 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1594 return AVERROR(EINVAL);
1596 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1597 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1599 c->nr_of_streams_flushed = 0;
1604 static int dash_write_header(AVFormatContext *s)
1606 DASHContext *c = s->priv_data;
1608 for (i = 0; i < s->nb_streams; i++) {
1609 OutputStream *os = &c->streams[i];
1610 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1613 // Flush init segment
1614 // Only for WebM segment, since for mp4 delay_moov is set and
1615 // the init segment is thus flushed after the first packets.
1616 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1617 (ret = flush_init_segment(s, os)) < 0)
1623 static int add_segment(OutputStream *os, const char *file,
1624 int64_t time, int64_t duration,
1625 int64_t start_pos, int64_t range_length,
1626 int64_t index_length, int next_exp_index)
1630 if (os->nb_segments >= os->segments_size) {
1631 os->segments_size = (os->segments_size + 1) * 2;
1632 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1633 os->segments_size)) < 0) {
1634 os->segments_size = 0;
1635 os->nb_segments = 0;
1639 seg = av_mallocz(sizeof(*seg));
1641 return AVERROR(ENOMEM);
1642 av_strlcpy(seg->file, file, sizeof(seg->file));
1644 seg->duration = duration;
1645 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1646 seg->duration += seg->time;
1649 seg->start_pos = start_pos;
1650 seg->range_length = range_length;
1651 seg->index_length = index_length;
1652 os->segments[os->nb_segments++] = seg;
1653 os->segment_index++;
1654 //correcting the segment index if it has fallen behind the expected value
1655 if (os->segment_index < next_exp_index) {
1656 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1657 file, os->segment_index, next_exp_index);
1658 os->segment_index = next_exp_index;
1663 static void write_styp(AVIOContext *pb)
1666 ffio_wfourcc(pb, "styp");
1667 ffio_wfourcc(pb, "msdh");
1668 avio_wb32(pb, 0); /* minor */
1669 ffio_wfourcc(pb, "msdh");
1670 ffio_wfourcc(pb, "msix");
1673 static void find_index_range(AVFormatContext *s, const char *full_path,
1674 int64_t pos, int *index_length)
1680 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1683 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1684 ff_format_io_close(s, &pb);
1687 ret = avio_read(pb, buf, 8);
1688 ff_format_io_close(s, &pb);
1691 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1693 *index_length = AV_RB32(&buf[0]);
1696 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1697 AVPacket *pkt, AVRational *frame_rate)
1699 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1701 int ret, extradata_size;
1703 if (par->extradata_size)
1706 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1707 if (!extradata_size)
1710 ret = ff_alloc_extradata(par, extradata_size);
1714 memcpy(par->extradata, extradata, extradata_size);
1716 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1721 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1722 DASHContext *c = s->priv_data;
1723 int http_base_proto = ff_is_http_proto(filename);
1725 if (http_base_proto) {
1726 AVIOContext *out = NULL;
1727 AVDictionary *http_opts = NULL;
1729 set_http_options(&http_opts, c);
1730 av_dict_set(&http_opts, "method", "DELETE", 0);
1732 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1733 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1736 av_dict_free(&http_opts);
1737 ff_format_io_close(s, &out);
1739 int res = avpriv_io_delete(filename);
1741 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1742 av_strerror(res, errbuf, sizeof(errbuf));
1743 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1748 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1750 DASHContext *c = s->priv_data;
1751 size_t dirname_len, file_len;
1752 char filename[1024];
1754 dirname_len = strlen(c->dirname);
1755 if (dirname_len >= sizeof(filename)) {
1756 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1757 (uint64_t)dirname_len, c->dirname);
1758 return AVERROR(ENAMETOOLONG);
1761 memcpy(filename, c->dirname, dirname_len);
1763 file_len = strlen(file);
1764 if ((dirname_len + file_len) >= sizeof(filename)) {
1765 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1766 (uint64_t)(dirname_len + file_len), c->dirname, file);
1767 return AVERROR(ENAMETOOLONG);
1770 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1771 dashenc_delete_file(s, filename);
1776 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1778 for (int i = 0; i < remove_count; ++i) {
1779 dashenc_delete_segment_file(s, os->segments[i]->file);
1781 // Delete the segment regardless of whether the file was successfully deleted
1782 av_free(os->segments[i]);
1785 os->nb_segments -= remove_count;
1786 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1789 static int dash_flush(AVFormatContext *s, int final, int stream)
1791 DASHContext *c = s->priv_data;
1794 const char *proto = avio_find_protocol_name(s->url);
1795 int use_rename = proto && !strcmp(proto, "file");
1797 int cur_flush_segment_index = 0, next_exp_index = -1;
1799 cur_flush_segment_index = c->streams[stream].segment_index;
1801 //finding the next segment's expected index, based on the current pts value
1802 if (c->use_template && !c->use_timeline && c->index_correction &&
1803 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1804 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1805 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1806 c->streams[stream].first_pts,
1807 s->streams[stream]->time_base,
1809 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1813 for (i = 0; i < s->nb_streams; i++) {
1814 OutputStream *os = &c->streams[i];
1815 AVStream *st = s->streams[i];
1816 int range_length, index_length = 0;
1818 if (!os->packets_written)
1821 // Flush the single stream that got a keyframe right now.
1822 // Flush all audio streams as well, in sync with video keyframes,
1823 // but not the other video streams.
1824 if (stream >= 0 && i != stream) {
1825 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1826 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1828 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1830 // Make sure we don't flush audio streams multiple times, when
1831 // all video streams are flushed one at a time.
1832 if (c->has_video && os->segment_index > cur_flush_segment_index)
1836 if (!c->single_file) {
1837 if (os->segment_type == SEGMENT_TYPE_MP4 && !os->written_len)
1838 write_styp(os->ctx->pb);
1840 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1843 ret = flush_dynbuf(c, os, &range_length);
1846 os->packets_written = 0;
1848 if (c->single_file) {
1849 find_index_range(s, os->full_path, os->pos, &index_length);
1851 dashenc_io_close(s, &os->out, os->temp_path);
1854 ret = avpriv_io_move(os->temp_path, os->full_path);
1860 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1864 if (!os->muxer_overhead)
1865 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1867 av_rescale_q(os->max_pts - os->start_pts,
1868 st->time_base, AV_TIME_BASE_Q);
1869 os->total_pkt_size = 0;
1870 os->total_pkt_duration = 0;
1872 if (!os->bit_rate) {
1873 // calculate average bitrate of first segment
1874 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1878 os->bit_rate = bitrate;
1880 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1881 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1883 os->pos += range_length;
1886 if (c->window_size) {
1887 for (i = 0; i < s->nb_streams; i++) {
1888 OutputStream *os = &c->streams[i];
1889 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1890 if (remove_count > 0)
1891 dashenc_delete_media_segments(s, os, remove_count);
1896 for (i = 0; i < s->nb_streams; i++) {
1897 OutputStream *os = &c->streams[i];
1898 if (os->ctx && os->ctx_inited) {
1899 int64_t file_size = avio_tell(os->ctx->pb);
1900 av_write_trailer(os->ctx);
1901 if (c->global_sidx) {
1902 int j, start_index, start_number;
1903 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1904 get_start_index_number(os, c, &start_index, &start_number);
1905 if (start_index >= os->nb_segments ||
1906 os->segment_type != SEGMENT_TYPE_MP4)
1908 os->init_range_length += sidx_size;
1909 for (j = start_index; j < os->nb_segments; j++) {
1910 Segment *seg = os->segments[j];
1911 seg->start_pos += sidx_size;
1919 if (c->has_video && !final) {
1920 c->nr_of_streams_flushed++;
1921 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1924 c->nr_of_streams_flushed = 0;
1926 ret = write_manifest(s, final);
1931 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
1933 DASHContext *c = s->priv_data;
1934 AVStream *st = s->streams[pkt->stream_index];
1935 OutputStream *os = &c->streams[pkt->stream_index];
1936 AdaptationSet *as = &c->as[os->as_idx - 1];
1937 int64_t seg_end_duration, elapsed_duration;
1940 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
1944 // Fill in a heuristic guess of the packet duration, if none is available.
1945 // The mp4 muxer will do something similar (for the last packet in a fragment)
1946 // if nothing is set (setting it for the other packets doesn't hurt).
1947 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
1948 // invoke its heuristic (this doesn't have to be identical to that algorithm),
1949 // so that we know the exact timestamps of fragments.
1950 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
1951 pkt->duration = pkt->dts - os->last_dts;
1952 os->last_dts = pkt->dts;
1954 // If forcing the stream to start at 0, the mp4 muxer will set the start
1955 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
1956 if (os->first_pts == AV_NOPTS_VALUE &&
1957 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
1958 pkt->pts -= pkt->dts;
1962 if (os->first_pts == AV_NOPTS_VALUE) {
1964 AVProducerReferenceTime *prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT,
1966 if (prft && side_data_size == sizeof(AVProducerReferenceTime) && !prft->flags)
1967 os->producer_reference_time = prft->wallclock;
1968 os->first_pts = pkt->pts;
1970 os->last_pts = pkt->pts;
1972 if (!c->availability_start_time[0]) {
1973 int64_t start_time_us = av_gettime();
1974 c->start_time_s = start_time_us / 1000000;
1975 format_date(c->availability_start_time,
1976 sizeof(c->availability_start_time), start_time_us);
1979 if (!os->packets_written)
1980 os->availability_time_offset = 0;
1982 if (!os->availability_time_offset &&
1983 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
1984 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
1985 int64_t frame_duration = 0;
1987 switch (os->frag_type) {
1988 case FRAG_TYPE_DURATION:
1989 frame_duration = os->frag_duration;
1991 case FRAG_TYPE_EVERY_FRAME:
1992 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
1996 os->availability_time_offset = ((double) os->seg_duration -
1997 frame_duration) / AV_TIME_BASE;
1998 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2001 if (c->use_template && !c->use_timeline) {
2002 elapsed_duration = pkt->pts - os->first_pts;
2003 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2005 elapsed_duration = pkt->pts - os->start_pts;
2006 seg_end_duration = os->seg_duration;
2009 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2010 av_compare_ts(elapsed_duration, st->time_base,
2011 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2012 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2013 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2016 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2020 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2021 if (c->last_duration < os->last_duration*9/10 ||
2022 c->last_duration > os->last_duration*11/10) {
2023 av_log(s, AV_LOG_WARNING,
2024 "Segment durations differ too much, enable use_timeline "
2025 "and use_template, or keep a stricter keyframe interval\n");
2030 if (c->write_prft && os->producer_reference_time && !os->producer_reference_time_str[0])
2031 format_date(os->producer_reference_time_str,
2032 sizeof(os->producer_reference_time_str),
2033 os->producer_reference_time);
2035 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2039 if (!os->packets_written) {
2040 // If we wrote a previous segment, adjust the start time of the segment
2041 // to the end of the previous one (which is the same as the mp4 muxer
2042 // does). This avoids gaps in the timeline.
2043 if (os->max_pts != AV_NOPTS_VALUE)
2044 os->start_pts = os->max_pts;
2046 os->start_pts = pkt->pts;
2048 if (os->max_pts == AV_NOPTS_VALUE)
2049 os->max_pts = pkt->pts + pkt->duration;
2051 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2053 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2054 os->frag_type == FRAG_TYPE_PFRAMES &&
2055 os->packets_written) {
2059 av_assert0(os->parser);
2060 av_parser_parse2(os->parser, os->parser_avctx,
2061 &data, &size, pkt->data, pkt->size,
2062 pkt->pts, pkt->dts, pkt->pos);
2064 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2065 st->codecpar->video_delay &&
2066 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2067 pkt->flags & AV_PKT_FLAG_KEY) {
2068 ret = av_write_frame(os->ctx, NULL);
2072 if (!os->availability_time_offset) {
2073 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2075 os->availability_time_offset = ((double) os->seg_duration -
2076 frag_duration) / AV_TIME_BASE;
2077 as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2082 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size) {
2083 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2084 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2087 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2090 os->packets_written++;
2091 os->total_pkt_size += pkt->size;
2092 os->total_pkt_duration += pkt->duration;
2093 os->last_flags = pkt->flags;
2095 if (!os->init_range_length)
2096 flush_init_segment(s, os);
2098 //open the output context when the first frame of a segment is ready
2099 if (!c->single_file && os->packets_written == 1) {
2100 AVDictionary *opts = NULL;
2101 const char *proto = avio_find_protocol_name(s->url);
2102 int use_rename = proto && !strcmp(proto, "file");
2103 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2104 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2105 os->media_seg_name, pkt->stream_index,
2106 os->segment_index, os->bit_rate, os->start_pts);
2107 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2109 snprintf(os->temp_path, sizeof(os->temp_path),
2110 use_rename ? "%s.tmp" : "%s", os->full_path);
2111 set_http_options(&opts, c);
2112 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2113 av_dict_free(&opts);
2115 return handle_io_open_error(s, ret, os->temp_path);
2118 char *prefetch_url = use_rename ? NULL : os->filename;
2119 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2123 //write out the data immediately in streaming mode
2124 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2126 uint8_t *buf = NULL;
2127 if (!os->written_len)
2128 write_styp(os->ctx->pb);
2129 avio_flush(os->ctx->pb);
2130 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2132 avio_write(os->out, buf + os->written_len, len - os->written_len);
2133 avio_flush(os->out);
2135 os->written_len = len;
2141 static int dash_write_trailer(AVFormatContext *s)
2143 DASHContext *c = s->priv_data;
2146 if (s->nb_streams > 0) {
2147 OutputStream *os = &c->streams[0];
2148 // If no segments have been written so far, try to do a crude
2149 // guess of the segment duration
2150 if (!c->last_duration)
2151 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2152 s->streams[0]->time_base,
2154 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2155 s->streams[0]->time_base,
2158 dash_flush(s, 1, -1);
2160 if (c->remove_at_exit) {
2161 for (i = 0; i < s->nb_streams; ++i) {
2162 OutputStream *os = &c->streams[i];
2163 dashenc_delete_media_segments(s, os, os->nb_segments);
2164 dashenc_delete_segment_file(s, os->initfile);
2165 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2166 char filename[1024];
2167 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2168 dashenc_delete_file(s, filename);
2171 dashenc_delete_file(s, s->url);
2173 if (c->hls_playlist && c->master_playlist_created) {
2174 char filename[1024];
2175 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2176 dashenc_delete_file(s, filename);
2183 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2185 DASHContext *c = s->priv_data;
2186 OutputStream *os = &c->streams[avpkt->stream_index];
2187 AVFormatContext *oc = os->ctx;
2188 if (oc->oformat->check_bitstream) {
2190 AVPacket pkt = *avpkt;
2191 pkt.stream_index = 0;
2192 ret = oc->oformat->check_bitstream(oc, &pkt);
2194 AVStream *st = s->streams[avpkt->stream_index];
2195 AVStream *ost = oc->streams[0];
2196 st->internal->bsfcs = ost->internal->bsfcs;
2197 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2198 ost->internal->bsfcs = NULL;
2199 ost->internal->nb_bsfcs = 0;
2206 #define OFFSET(x) offsetof(DASHContext, x)
2207 #define E AV_OPT_FLAG_ENCODING_PARAM
2208 static const AVOption options[] = {
2209 { "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 },
2210 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2211 { "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 },
2212 #if FF_API_DASH_MIN_SEG_DURATION
2213 { "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 },
2215 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2216 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2217 { "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"},
2218 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2219 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2220 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2221 { "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"},
2222 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2223 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2224 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2225 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2226 { "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 },
2227 { "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 },
2228 { "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 },
2229 { "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 },
2230 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2231 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2232 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2233 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2234 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2235 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2236 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2237 { "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},
2238 { "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 },
2239 { "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"},
2240 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2241 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2242 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2243 { "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 },
2244 { "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 },
2245 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2246 { "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},
2247 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2248 { "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"},
2249 { "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"},
2250 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2254 static const AVClass dash_class = {
2255 .class_name = "dash muxer",
2256 .item_name = av_default_item_name,
2258 .version = LIBAVUTIL_VERSION_INT,
2261 AVOutputFormat ff_dash_muxer = {
2263 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2264 .extensions = "mpd",
2265 .priv_data_size = sizeof(DASHContext),
2266 .audio_codec = AV_CODEC_ID_AAC,
2267 .video_codec = AV_CODEC_ID_H264,
2268 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2270 .write_header = dash_write_header,
2271 .write_packet = dash_write_packet,
2272 .write_trailer = dash_write_trailer,
2273 .deinit = dash_free,
2274 .check_bitstream = dash_check_bitstream,
2275 .priv_class = &dash_class,