2 * MPEG-DASH ISO BMFF segmenter
3 * Copyright (c) 2014 Martin Storsjo
4 * Copyright (c) 2018 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avassert.h"
29 #include "libavutil/avutil.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/parseutils.h"
35 #include "libavutil/rational.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
42 #include "avio_internal.h"
43 #include "hlsplaylist.h"
44 #if CONFIG_HTTP_PROTOCOL
49 #include "os_support.h"
55 SEGMENT_TYPE_AUTO = 0,
63 FRAG_TYPE_EVERY_FRAME,
69 #define MPD_PROFILE_DASH 1
70 #define MPD_PROFILE_DVB 2
72 typedef struct Segment {
75 int range_length, index_length;
77 double prog_date_time;
82 typedef struct AdaptationSet {
86 int64_t frag_duration;
88 enum AVMediaType media_type;
89 AVDictionary *metadata;
90 AVRational min_frame_rate, max_frame_rate;
91 int ambiguous_frame_rate;
92 int64_t max_frag_duration;
93 int max_width, max_height;
99 typedef struct OutputStream {
100 AVFormatContext *ctx;
101 int ctx_inited, as_idx;
103 AVCodecParserContext *parser;
104 AVCodecContext *parser_avctx;
107 int64_t init_start_pos, pos;
108 int init_range_length;
109 int nb_segments, segments_size, segment_index;
110 int64_t seg_duration;
111 int64_t frag_duration;
112 int64_t last_duration;
114 int64_t first_pts, start_pts, max_pts;
115 int64_t last_dts, last_pts;
118 SegmentType segment_type; /* segment type selected for this particular stream */
119 const char *format_name;
120 const char *extension_name;
121 const char *single_file_name; /* file names selected for this particular stream */
122 const char *init_seg_name;
123 const char *media_seg_name;
128 char full_path[1024];
129 char temp_path[1024];
130 double availability_time_offset;
131 int64_t producer_reference_time;
132 char producer_reference_time_str[100];
134 int64_t total_pkt_duration;
139 int coding_dependency;
142 typedef struct DASHContext {
143 const AVClass *class; /* Class for private options. */
144 char *adaptation_sets;
148 int extra_window_size;
149 #if FF_API_DASH_MIN_SEG_DURATION
150 int min_seg_duration;
152 int64_t seg_duration;
153 int64_t frag_duration;
158 OutputStream *streams;
160 int64_t last_duration;
161 int64_t total_duration;
162 char availability_start_time[100];
164 int64_t presentation_time_offset;
166 const char *single_file_name; /* file names as specified in options */
167 const char *init_seg_name;
168 const char *media_seg_name;
169 const char *utc_timing_url;
171 const char *user_agent;
172 AVDictionary *http_opts;
175 int master_playlist_created;
176 AVIOContext *mpd_out;
177 AVIOContext *m3u8_out;
180 int index_correction;
181 AVDictionary *format_options;
183 SegmentType segment_type_option; /* segment type as specified in options */
184 int ignore_io_errors;
187 int master_publish_rate;
188 int nr_of_streams_to_flush;
189 int nr_of_streams_flushed;
192 int64_t max_gop_size;
194 int64_t target_latency;
195 int target_latency_refid;
198 static struct codec_string {
202 { AV_CODEC_ID_VP8, "vp8" },
203 { AV_CODEC_ID_VP9, "vp9" },
204 { AV_CODEC_ID_VORBIS, "vorbis" },
205 { AV_CODEC_ID_OPUS, "opus" },
206 { AV_CODEC_ID_FLAC, "flac" },
210 static struct format_string {
211 SegmentType segment_type;
214 { SEGMENT_TYPE_AUTO, "auto" },
215 { SEGMENT_TYPE_MP4, "mp4" },
216 { SEGMENT_TYPE_WEBM, "webm" },
220 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
221 AVDictionary **options) {
222 DASHContext *c = s->priv_data;
223 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
224 int err = AVERROR_MUXER_NOT_FOUND;
225 if (!*pb || !http_base_proto || !c->http_persistent) {
226 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
227 #if CONFIG_HTTP_PROTOCOL
229 URLContext *http_url_context = ffio_geturlcontext(*pb);
230 av_assert0(http_url_context);
231 err = ff_http_do_new_request(http_url_context, filename);
233 ff_format_io_close(s, pb);
239 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
240 DASHContext *c = s->priv_data;
241 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
246 if (!http_base_proto || !c->http_persistent) {
247 ff_format_io_close(s, pb);
248 #if CONFIG_HTTP_PROTOCOL
250 URLContext *http_url_context = ffio_geturlcontext(*pb);
251 av_assert0(http_url_context);
253 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
258 static const char *get_format_str(SegmentType segment_type) {
260 for (i = 0; i < SEGMENT_TYPE_NB; i++)
261 if (formats[i].segment_type == segment_type)
262 return formats[i].str;
266 static const char *get_extension_str(SegmentType type, int single_file)
270 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
271 case SEGMENT_TYPE_WEBM: return "webm";
272 default: return NULL;
276 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
277 DASHContext *c = s->priv_data;
278 char errbuf[AV_ERROR_MAX_STRING_SIZE];
279 av_strerror(err, errbuf, sizeof(errbuf));
280 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
281 "Unable to open %s for writing: %s\n", url, errbuf);
282 return c->ignore_io_errors ? 0 : err;
285 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
287 if (segment_type == SEGMENT_TYPE_AUTO) {
288 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
289 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
290 segment_type = SEGMENT_TYPE_WEBM;
292 segment_type = SEGMENT_TYPE_MP4;
299 static int init_segment_types(AVFormatContext *s)
301 DASHContext *c = s->priv_data;
302 int has_mp4_streams = 0;
303 for (int i = 0; i < s->nb_streams; ++i) {
304 OutputStream *os = &c->streams[i];
305 SegmentType segment_type = select_segment_type(
306 c->segment_type_option, s->streams[i]->codecpar->codec_id);
307 os->segment_type = segment_type;
308 os->format_name = get_format_str(segment_type);
309 if (!os->format_name) {
310 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
311 return AVERROR_MUXER_NOT_FOUND;
313 os->extension_name = get_extension_str(segment_type, c->single_file);
314 if (!os->extension_name) {
315 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
316 return AVERROR_MUXER_NOT_FOUND;
319 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
322 if (c->hls_playlist && !has_mp4_streams) {
323 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
330 static int check_file_extension(const char *filename, const char *extension) {
332 if (!filename || !extension)
334 dot = strrchr(filename, '.');
335 if (dot && !strcmp(dot + 1, extension))
340 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
341 AVRational *frame_rate, char *str, int size) {
343 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
345 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
346 vpcc.profile, vpcc.level, vpcc.bitdepth);
348 // Default to just vp9 in case of error while finding out profile or level
349 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
350 av_strlcpy(str, "vp9", size);
355 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
356 AVRational *frame_rate, char *str, int size)
358 const AVCodecTag *tags[2] = { NULL, NULL };
362 // common Webm codecs are not part of RFC 6381
363 for (i = 0; codecs[i].id; i++)
364 if (codecs[i].id == par->codec_id) {
365 if (codecs[i].id == AV_CODEC_ID_VP9) {
366 set_vp9_codec_str(s, par, frame_rate, str, size);
368 av_strlcpy(str, codecs[i].str, size);
373 // for codecs part of RFC 6381
374 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
375 tags[0] = ff_codec_movvideo_tags;
376 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
377 tags[0] = ff_codec_movaudio_tags;
381 tag = par->codec_tag;
383 tag = av_codec_get_tag(tags, par->codec_id);
391 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
393 tags[0] = ff_mp4_obj_type;
394 oti = av_codec_get_tag(tags, par->codec_id);
396 av_strlcatf(str, size, ".%02"PRIx32, oti);
400 if (tag == MKTAG('m', 'p', '4', 'a')) {
401 if (par->extradata_size >= 2) {
402 int aot = par->extradata[0] >> 3;
404 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
405 av_strlcatf(str, size, ".%d", aot);
407 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
408 // Unimplemented, should output ProfileLevelIndication as a decimal number
409 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
411 } else if (!strcmp(str, "avc1")) {
412 uint8_t *tmpbuf = NULL;
413 uint8_t *extradata = par->extradata;
414 int extradata_size = par->extradata_size;
417 if (extradata[0] != 1) {
419 if (avio_open_dyn_buf(&pb) < 0)
421 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
422 ffio_free_dyn_buf(&pb);
425 extradata_size = avio_close_dyn_buf(pb, &extradata);
429 if (extradata_size >= 4)
430 av_strlcatf(str, size, ".%02x%02x%02x",
431 extradata[1], extradata[2], extradata[3]);
433 } else if (!strcmp(str, "av01")) {
434 AV1SequenceParameters seq;
435 if (!par->extradata_size)
437 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
440 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
441 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
442 if (seq.color_description_present_flag)
443 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
445 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
446 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
451 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
456 return AVERROR(EINVAL);
460 av_write_frame(os->ctx, NULL);
461 avio_flush(os->ctx->pb);
463 if (!c->single_file) {
465 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
468 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
473 return avio_open_dyn_buf(&os->ctx->pb);
475 *range_length = avio_tell(os->ctx->pb) - os->pos;
480 static void set_http_options(AVDictionary **options, DASHContext *c)
483 av_dict_set(options, "method", c->method, 0);
484 av_dict_copy(options, c->http_opts, 0);
486 av_dict_set(options, "user_agent", c->user_agent, 0);
487 if (c->http_persistent)
488 av_dict_set_int(options, "multiple_requests", 1, 0);
490 av_dict_set_int(options, "timeout", c->timeout, 0);
493 static void get_hls_playlist_name(char *playlist_name, int string_size,
494 const char *base_url, int id) {
496 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
498 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
501 static void get_start_index_number(OutputStream *os, DASHContext *c,
502 int *start_index, int *start_number) {
505 if (c->window_size) {
506 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
507 *start_number = FFMAX(os->segment_index - c->window_size, 1);
511 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
512 int representation_id, int final,
513 char *prefetch_url) {
514 DASHContext *c = s->priv_data;
515 int timescale = os->ctx->streams[0]->time_base.den;
516 char temp_filename_hls[1024];
517 char filename_hls[1024];
518 AVDictionary *http_opts = NULL;
519 int target_duration = 0;
521 const char *proto = avio_find_protocol_name(c->dirname);
522 int use_rename = proto && !strcmp(proto, "file");
523 int i, start_index, start_number;
524 double prog_date_time = 0;
526 get_start_index_number(os, c, &start_index, &start_number);
528 if (!c->hls_playlist || start_index >= os->nb_segments ||
529 os->segment_type != SEGMENT_TYPE_MP4)
532 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
533 c->dirname, representation_id);
535 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
537 set_http_options(&http_opts, c);
538 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
539 av_dict_free(&http_opts);
541 handle_io_open_error(s, ret, temp_filename_hls);
544 for (i = start_index; i < os->nb_segments; i++) {
545 Segment *seg = os->segments[i];
546 double duration = (double) seg->duration / timescale;
547 if (target_duration <= duration)
548 target_duration = lrint(duration);
551 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
552 start_number, PLAYLIST_TYPE_NONE, 0);
554 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
555 os->init_range_length, os->init_start_pos);
557 for (i = start_index; i < os->nb_segments; i++) {
558 Segment *seg = os->segments[i];
560 if (prog_date_time == 0) {
561 if (os->nb_segments == 1)
562 prog_date_time = c->start_time_s;
564 prog_date_time = seg->prog_date_time;
566 seg->prog_date_time = prog_date_time;
568 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
569 (double) seg->duration / timescale, 0,
570 seg->range_length, seg->start_pos, NULL,
571 c->single_file ? os->initfile : seg->file,
572 &prog_date_time, 0, 0, 0);
574 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
579 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
582 ff_hls_write_end_list(c->m3u8_out);
584 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
587 ff_rename(temp_filename_hls, filename_hls, os->ctx);
590 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
592 DASHContext *c = s->priv_data;
593 int ret, range_length;
595 ret = flush_dynbuf(c, os, &range_length);
599 os->pos = os->init_range_length = range_length;
600 if (!c->single_file) {
602 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
603 dashenc_io_close(s, &os->out, filename);
608 static void dash_free(AVFormatContext *s)
610 DASHContext *c = s->priv_data;
614 for (i = 0; i < c->nb_as; i++) {
615 av_dict_free(&c->as[i].metadata);
616 av_freep(&c->as[i].descriptor);
624 for (i = 0; i < s->nb_streams; i++) {
625 OutputStream *os = &c->streams[i];
626 if (os->ctx && os->ctx->pb) {
628 ffio_free_dyn_buf(&os->ctx->pb);
630 avio_close(os->ctx->pb);
632 ff_format_io_close(s, &os->out);
633 avformat_free_context(os->ctx);
634 avcodec_free_context(&os->parser_avctx);
635 av_parser_close(os->parser);
636 for (j = 0; j < os->nb_segments; j++)
637 av_free(os->segments[j]);
638 av_free(os->segments);
639 av_freep(&os->single_file_name);
640 av_freep(&os->init_seg_name);
641 av_freep(&os->media_seg_name);
643 av_freep(&c->streams);
645 ff_format_io_close(s, &c->mpd_out);
646 ff_format_io_close(s, &c->m3u8_out);
649 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
650 int representation_id, int final)
652 DASHContext *c = s->priv_data;
653 int i, start_index, start_number;
654 get_start_index_number(os, c, &start_index, &start_number);
656 if (c->use_template) {
657 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
658 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
659 if (!c->use_timeline) {
660 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
661 if (c->streaming && os->availability_time_offset)
662 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
663 os->availability_time_offset);
665 if (c->streaming && os->availability_time_offset && !final)
666 avio_printf(out, "availabilityTimeComplete=\"false\" ");
668 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
669 if (c->presentation_time_offset)
670 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
671 avio_printf(out, ">\n");
672 if (c->use_timeline) {
673 int64_t cur_time = 0;
674 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
675 for (i = start_index; i < os->nb_segments; ) {
676 Segment *seg = os->segments[i];
678 avio_printf(out, "\t\t\t\t\t\t<S ");
679 if (i == start_index || seg->time != cur_time) {
680 cur_time = seg->time;
681 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
683 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
684 while (i + repeat + 1 < os->nb_segments &&
685 os->segments[i + repeat + 1]->duration == seg->duration &&
686 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
689 avio_printf(out, "r=\"%d\" ", repeat);
690 avio_printf(out, "/>\n");
692 cur_time += (1 + repeat) * seg->duration;
694 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
696 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
697 } else if (c->single_file) {
698 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
699 avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
700 avio_printf(out, "\t\t\t\t\t<Initialization range=\"%"PRId64"-%"PRId64"\" />\n", os->init_start_pos, os->init_start_pos + os->init_range_length - 1);
701 for (i = start_index; i < os->nb_segments; i++) {
702 Segment *seg = os->segments[i];
703 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
704 if (seg->index_length)
705 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
706 avio_printf(out, "/>\n");
708 avio_printf(out, "\t\t\t\t</SegmentList>\n");
710 avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
711 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
712 for (i = start_index; i < os->nb_segments; i++) {
713 Segment *seg = os->segments[i];
714 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
716 avio_printf(out, "\t\t\t\t</SegmentList>\n");
718 if (!c->lhls || final) {
719 write_hls_media_playlist(os, s, representation_id, final, NULL);
724 static char *xmlescape(const char *str) {
725 int outlen = strlen(str)*3/2 + 6;
726 char *out = av_realloc(NULL, outlen + 1);
730 for (; *str; str++) {
731 if (pos + 6 > outlen) {
733 outlen = 2 * outlen + 6;
734 tmp = av_realloc(out, outlen + 1);
742 memcpy(&out[pos], "&", 5);
744 } else if (*str == '<') {
745 memcpy(&out[pos], "<", 4);
747 } else if (*str == '>') {
748 memcpy(&out[pos], ">", 4);
750 } else if (*str == '\'') {
751 memcpy(&out[pos], "'", 6);
753 } else if (*str == '\"') {
754 memcpy(&out[pos], """, 6);
764 static void write_time(AVIOContext *out, int64_t time)
766 int seconds = time / AV_TIME_BASE;
767 int fractions = time % AV_TIME_BASE;
768 int minutes = seconds / 60;
769 int hours = minutes / 60;
772 avio_printf(out, "PT");
774 avio_printf(out, "%dH", hours);
775 if (hours || minutes)
776 avio_printf(out, "%dM", minutes);
777 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
780 static void format_date(char *buf, int size, int64_t time_us)
782 struct tm *ptm, tmbuf;
783 int64_t time_ms = time_us / 1000;
784 const time_t time_s = time_ms / 1000;
785 int millisec = time_ms - (time_s * 1000);
786 ptm = gmtime_r(&time_s, &tmbuf);
789 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
794 snprintf(buf + len, size - len, ".%03dZ", millisec);
798 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
801 DASHContext *c = s->priv_data;
802 AdaptationSet *as = &c->as[as_index];
803 AVDictionaryEntry *lang, *role;
806 avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
807 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
808 if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
809 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
810 else if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && !av_cmp_q(as->min_frame_rate, as->max_frame_rate))
811 avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
812 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
813 avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
814 avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
816 lang = av_dict_get(as->metadata, "language", NULL, 0);
818 avio_printf(out, " lang=\"%s\"", lang->value);
819 avio_printf(out, ">\n");
821 if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
822 avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
823 if (as->trick_idx >= 0)
824 avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
825 role = av_dict_get(as->metadata, "role", NULL, 0);
827 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
829 avio_printf(out, "\t\t\t%s\n", as->descriptor);
830 for (i = 0; i < s->nb_streams; i++) {
831 AVStream *st = s->streams[i];
832 OutputStream *os = &c->streams[i];
833 char bandwidth_str[64] = {'\0'};
835 if (os->as_idx - 1 != as_index)
838 if (os->bit_rate > 0)
839 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
842 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
843 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
844 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
845 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
846 avio_printf(out, " scanType=\"unknown\"");
847 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
848 avio_printf(out, " scanType=\"interlaced\"");
849 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
850 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
851 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
852 if (as->trick_idx >= 0) {
853 AdaptationSet *tas = &c->as[as->trick_idx];
854 if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
855 avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
857 if (!os->coding_dependency)
858 avio_printf(out, " codingDependency=\"false\"");
859 avio_printf(out, ">\n");
861 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
862 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
863 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
864 s->streams[i]->codecpar->channels);
866 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
867 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"encoder\" wallclockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
868 i, os->producer_reference_time_str, c->presentation_time_offset);
869 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
870 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
872 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
873 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
874 avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
875 output_segment_list(os, out, s, i, final);
876 avio_printf(out, "\t\t\t</Representation>\n");
878 avio_printf(out, "\t\t</AdaptationSet>\n");
883 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
885 DASHContext *c = s->priv_data;
888 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
889 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
890 return AVERROR(EINVAL);
892 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
894 return AVERROR(ENOMEM);
898 *as = &c->as[c->nb_as - 1];
899 memset(*as, 0, sizeof(**as));
900 (*as)->media_type = type;
901 (*as)->frag_type = -1;
902 (*as)->trick_idx = -1;
907 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
909 DASHContext *c = s->priv_data;
910 AdaptationSet *as = &c->as[as_idx - 1];
911 OutputStream *os = &c->streams[i];
913 if (as->media_type != s->streams[i]->codecpar->codec_type) {
914 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
915 return AVERROR(EINVAL);
916 } else if (os->as_idx) {
917 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
918 return AVERROR(EINVAL);
920 if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
921 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
922 return AVERROR(EINVAL);
930 static int parse_adaptation_sets(AVFormatContext *s)
932 DASHContext *c = s->priv_data;
933 const char *p = c->adaptation_sets;
934 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
938 // default: one AdaptationSet for each stream
940 for (i = 0; i < s->nb_streams; i++) {
941 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
945 c->streams[i].as_idx = c->nb_as;
951 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
952 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
953 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
954 // id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
955 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
956 // descriptor_str should be a self-closing xml tag.
957 // seg_duration and frag_duration have the same syntax as the global options of
958 // the same name, and the former have precedence over them if set.
964 } else if (state == new_set && av_strstart(p, "id=", &p)) {
965 char id_str[10], *end_str;
968 snprintf(id_str, sizeof(id_str), "%.*s", n, p);
970 i = strtol(id_str, &end_str, 10);
971 if (id_str == end_str || i < 0 || i > c->nb_as) {
972 av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
973 return AVERROR(EINVAL);
976 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
983 state = parse_default;
984 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
985 state = parse_seg_duration;
986 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
987 state = parse_frag_duration;
988 } else if (state == parse_seg_duration || state == parse_frag_duration) {
993 snprintf(str, sizeof(str), "%.*s", n, p);
998 ret = av_parse_time(&usecs, str, 1);
1000 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
1004 if (state == parse_seg_duration)
1005 as->seg_duration = usecs;
1007 as->frag_duration = usecs;
1008 state = parse_default;
1009 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1012 n = strcspn(p, ",");
1013 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1018 if (!strcmp(type_str, "duration"))
1019 as->frag_type = FRAG_TYPE_DURATION;
1020 else if (!strcmp(type_str, "pframes"))
1021 as->frag_type = FRAG_TYPE_PFRAMES;
1022 else if (!strcmp(type_str, "every_frame"))
1023 as->frag_type = FRAG_TYPE_EVERY_FRAME;
1024 else if (!strcmp(type_str, "none"))
1025 as->frag_type = FRAG_TYPE_NONE;
1027 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1030 state = parse_default;
1031 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1032 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1033 if (n < strlen(p)) {
1034 as->descriptor = av_strndup(p, n);
1036 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1037 return AVERROR(EINVAL);
1042 state = parse_default;
1043 } else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
1044 char trick_id_str[10], *end_str;
1046 n = strcspn(p, ",");
1047 snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
1050 as->trick_idx = strtol(trick_id_str, &end_str, 10);
1051 if (trick_id_str == end_str || as->trick_idx < 0)
1052 return AVERROR(EINVAL);
1056 state = parse_default;
1057 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1058 state = parsing_streams;
1059 } else if (state == parsing_streams) {
1060 AdaptationSet *as = &c->as[c->nb_as - 1];
1061 char idx_str[8], *end_str;
1063 n = strcspn(p, " ,");
1064 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1067 // if value is "a" or "v", map all streams of that type
1068 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1069 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1070 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1072 for (i = 0; i < s->nb_streams; i++) {
1073 if (s->streams[i]->codecpar->codec_type != type)
1076 as->media_type = s->streams[i]->codecpar->codec_type;
1078 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1081 } else { // select single stream
1082 i = strtol(idx_str, &end_str, 10);
1083 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1084 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1085 return AVERROR(EINVAL);
1087 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1089 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1090 as->media_type = s->streams[i]->codecpar->codec_type;
1093 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1102 return AVERROR(EINVAL);
1107 // check for unassigned streams
1108 for (i = 0; i < s->nb_streams; i++) {
1109 OutputStream *os = &c->streams[i];
1111 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1112 return AVERROR(EINVAL);
1116 // check references for trick mode AdaptationSet
1117 for (i = 0; i < c->nb_as; i++) {
1119 if (as->trick_idx < 0)
1121 for (n = 0; n < c->nb_as; n++) {
1122 if (c->as[n].id == as->trick_idx)
1125 if (n >= c->nb_as) {
1126 av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
1127 return AVERROR(EINVAL);
1134 static int write_manifest(AVFormatContext *s, int final)
1136 DASHContext *c = s->priv_data;
1138 char temp_filename[1024];
1140 const char *proto = avio_find_protocol_name(s->url);
1141 int use_rename = proto && !strcmp(proto, "file");
1142 static unsigned int warned_non_file = 0;
1143 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1144 AVDictionary *opts = NULL;
1146 if (!use_rename && !warned_non_file++)
1147 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1149 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1150 set_http_options(&opts, c);
1151 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1152 av_dict_free(&opts);
1154 return handle_io_open_error(s, ret, temp_filename);
1157 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1158 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1159 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1160 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1161 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1163 if (c->profile & MPD_PROFILE_DASH)
1164 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1165 if (c->profile & MPD_PROFILE_DVB)
1166 avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1167 avio_printf(out, "\ttype=\"%s\"\n",
1168 final ? "static" : "dynamic");
1170 avio_printf(out, "\tmediaPresentationDuration=\"");
1171 write_time(out, c->total_duration);
1172 avio_printf(out, "\"\n");
1174 int64_t update_period = c->last_duration / AV_TIME_BASE;
1176 if (c->use_template && !c->use_timeline)
1177 update_period = 500;
1178 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1180 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1181 if (c->availability_start_time[0])
1182 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1183 format_date(now_str, sizeof(now_str), av_gettime());
1185 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1186 if (c->window_size && c->use_template) {
1187 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1188 write_time(out, c->last_duration * c->window_size);
1189 avio_printf(out, "\"\n");
1192 avio_printf(out, "\tminBufferTime=\"");
1193 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1194 avio_printf(out, "\">\n");
1195 avio_printf(out, "\t<ProgramInformation>\n");
1197 char *escaped = xmlescape(title->value);
1198 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1201 avio_printf(out, "\t</ProgramInformation>\n");
1202 if (!final && c->target_latency && c->target_latency_refid >= 0) {
1203 avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1204 avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1205 if (s->nb_streams > 1)
1206 avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1207 avio_printf(out, "/>\n");
1208 avio_printf(out, "\t</ServiceDescription>\n");
1211 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1212 OutputStream *os = &c->streams[0];
1213 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1214 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1215 avio_printf(out, "\t<Period id=\"0\" start=\"");
1216 write_time(out, start_time);
1217 avio_printf(out, "\">\n");
1219 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1222 for (i = 0; i < c->nb_as; i++) {
1223 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1226 avio_printf(out, "\t</Period>\n");
1228 if (c->utc_timing_url)
1229 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1231 avio_printf(out, "</MPD>\n");
1233 dashenc_io_close(s, &c->mpd_out, temp_filename);
1236 if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1240 if (c->hls_playlist) {
1241 char filename_hls[1024];
1242 const char *audio_group = "A1";
1243 char audio_codec_str[128] = "\0";
1245 int max_audio_bitrate = 0;
1247 // Publish master playlist only the configured rate
1248 if (c->master_playlist_created && (!c->master_publish_rate ||
1249 c->streams[0].segment_index % c->master_publish_rate))
1253 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1255 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1257 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1259 set_http_options(&opts, c);
1260 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1261 av_dict_free(&opts);
1263 return handle_io_open_error(s, ret, temp_filename);
1266 ff_hls_write_playlist_version(c->m3u8_out, 7);
1268 for (i = 0; i < s->nb_streams; i++) {
1269 char playlist_file[64];
1270 AVStream *st = s->streams[i];
1271 OutputStream *os = &c->streams[i];
1272 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1274 if (os->segment_type != SEGMENT_TYPE_MP4)
1276 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1277 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1278 playlist_file, NULL, i, is_default);
1279 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1280 os->muxer_overhead, max_audio_bitrate);
1281 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1282 if (strlen(audio_codec_str))
1283 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1284 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1289 for (i = 0; i < s->nb_streams; i++) {
1290 char playlist_file[64];
1291 char codec_str[128];
1292 AVStream *st = s->streams[i];
1293 OutputStream *os = &c->streams[i];
1294 char *agroup = NULL;
1295 char *codec_str_ptr = NULL;
1296 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1297 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1299 if (os->segment_type != SEGMENT_TYPE_MP4)
1301 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1302 if (max_audio_bitrate) {
1303 agroup = (char *)audio_group;
1304 stream_bitrate += max_audio_bitrate;
1305 av_strlcat(codec_str, ",", sizeof(codec_str));
1306 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1308 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1309 codec_str_ptr = codec_str;
1311 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1312 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1313 playlist_file, agroup,
1314 codec_str_ptr, NULL);
1316 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1318 if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1320 c->master_playlist_created = 1;
1326 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1328 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1330 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1334 static int dash_init(AVFormatContext *s)
1336 DASHContext *c = s->priv_data;
1339 char basename[1024];
1341 c->nr_of_streams_to_flush = 0;
1342 if (c->single_file_name)
1345 c->use_template = 0;
1348 av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1349 return AVERROR(EINVAL);
1351 #if FF_API_DASH_MIN_SEG_DURATION
1352 if (c->min_seg_duration != 5000000) {
1353 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1354 c->seg_duration = c->min_seg_duration;
1357 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1358 av_log(s, AV_LOG_ERROR,
1359 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1360 return AVERROR_EXPERIMENTAL;
1363 if (c->lhls && !c->streaming) {
1364 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1368 if (c->lhls && !c->hls_playlist) {
1369 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1373 if (c->ldash && !c->streaming) {
1374 av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1378 if (c->target_latency && !c->streaming) {
1379 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1380 c->target_latency = 0;
1383 if (c->global_sidx && !c->single_file) {
1384 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1388 if (c->global_sidx && c->streaming) {
1389 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1392 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1393 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1394 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1397 if (c->write_prft && !c->utc_timing_url) {
1398 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1402 if (c->write_prft && !c->streaming) {
1403 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1407 if (c->target_latency && !c->write_prft) {
1408 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1409 c->target_latency = 0;
1412 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1413 ptr = strrchr(c->dirname, '/');
1415 av_strlcpy(basename, &ptr[1], sizeof(basename));
1418 c->dirname[0] = '\0';
1419 av_strlcpy(basename, s->url, sizeof(basename));
1422 ptr = strrchr(basename, '.');
1426 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1428 return AVERROR(ENOMEM);
1430 if ((ret = parse_adaptation_sets(s)) < 0)
1433 if ((ret = init_segment_types(s)) < 0)
1436 for (i = 0; i < s->nb_streams; i++) {
1437 OutputStream *os = &c->streams[i];
1438 AdaptationSet *as = &c->as[os->as_idx - 1];
1439 AVFormatContext *ctx;
1441 AVDictionary *opts = NULL;
1442 char filename[1024];
1444 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1445 if (!os->bit_rate) {
1446 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1447 AV_LOG_ERROR : AV_LOG_WARNING;
1448 av_log(s, level, "No bit rate set for stream %d\n", i);
1449 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1450 return AVERROR(EINVAL);
1453 // copy AdaptationSet language and role from stream metadata
1454 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1455 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1457 if (c->init_seg_name) {
1458 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1459 if (!os->init_seg_name)
1460 return AVERROR(ENOMEM);
1462 if (c->media_seg_name) {
1463 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1464 if (!os->media_seg_name)
1465 return AVERROR(ENOMEM);
1467 if (c->single_file_name) {
1468 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1469 if (!os->single_file_name)
1470 return AVERROR(ENOMEM);
1473 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1474 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1475 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1476 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1477 av_log(s, AV_LOG_WARNING,
1478 "One or many segment file names doesn't end with .webm. "
1479 "Override -init_seg_name and/or -media_seg_name and/or "
1480 "-single_file_name to end with the extension .webm\n");
1483 // Streaming not supported as matroskaenc buffers internally before writing the output
1484 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1489 os->ctx = ctx = avformat_alloc_context();
1491 return AVERROR(ENOMEM);
1493 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1495 return AVERROR_MUXER_NOT_FOUND;
1496 ctx->interrupt_callback = s->interrupt_callback;
1497 ctx->opaque = s->opaque;
1498 ctx->io_close = s->io_close;
1499 ctx->io_open = s->io_open;
1500 ctx->strict_std_compliance = s->strict_std_compliance;
1502 if (!(st = avformat_new_stream(ctx, NULL)))
1503 return AVERROR(ENOMEM);
1504 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1505 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1506 st->time_base = s->streams[i]->time_base;
1507 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1508 ctx->avoid_negative_ts = s->avoid_negative_ts;
1509 ctx->flags = s->flags;
1511 os->parser = av_parser_init(st->codecpar->codec_id);
1513 os->parser_avctx = avcodec_alloc_context3(NULL);
1514 if (!os->parser_avctx)
1515 return AVERROR(ENOMEM);
1516 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1519 // We only want to parse frame headers
1520 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1523 if (c->single_file) {
1524 if (os->single_file_name)
1525 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1527 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1529 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1531 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1532 set_http_options(&opts, c);
1533 if (!c->single_file) {
1534 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1536 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1538 ctx->url = av_strdup(filename);
1539 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1541 av_dict_free(&opts);
1544 os->init_start_pos = 0;
1546 av_dict_copy(&opts, c->format_options, 0);
1547 if (!as->seg_duration)
1548 as->seg_duration = c->seg_duration;
1549 if (!as->frag_duration)
1550 as->frag_duration = c->frag_duration;
1551 if (as->frag_type < 0)
1552 as->frag_type = c->frag_type;
1553 os->seg_duration = as->seg_duration;
1554 os->frag_duration = as->frag_duration;
1555 os->frag_type = as->frag_type;
1557 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1558 av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1559 return AVERROR(EINVAL);
1562 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1563 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1564 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1566 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1567 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1568 return AVERROR(EINVAL);
1570 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1571 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1572 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1573 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1575 if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
1576 // Set this now if a parser isn't used
1577 os->coding_dependency = 1;
1579 if (os->segment_type == SEGMENT_TYPE_MP4) {
1581 // skip_sidx : Reduce bitrate overhead
1582 // skip_trailer : Avoids growing memory usage with time
1583 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1586 av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1588 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1590 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1591 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1593 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1594 if (os->frag_type == FRAG_TYPE_DURATION)
1595 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1597 av_dict_set(&opts, "write_prft", "wallclock", 0);
1599 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1600 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1601 av_dict_set_int(&opts, "dash", 1, 0);
1602 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1603 av_dict_set_int(&opts, "live", 1, 0);
1605 ret = avformat_init_output(ctx, &opts);
1606 av_dict_free(&opts);
1610 avio_flush(ctx->pb);
1612 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1614 s->streams[i]->time_base = st->time_base;
1615 // If the muxer wants to shift timestamps, request to have them shifted
1616 // already before being handed to this muxer, so we don't have mismatches
1617 // between the MPD and the actual segments.
1618 s->avoid_negative_ts = ctx->avoid_negative_ts;
1619 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1620 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1622 if (avg_frame_rate.num > 0) {
1623 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1624 as->min_frame_rate = avg_frame_rate;
1625 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1626 as->max_frame_rate = avg_frame_rate;
1628 as->ambiguous_frame_rate = 1;
1631 if (st->codecpar->width > as->max_width)
1632 as->max_width = st->codecpar->width;
1633 if (st->codecpar->height > as->max_height)
1634 as->max_height = st->codecpar->height;
1636 if (st->sample_aspect_ratio.num)
1637 os->sar = st->sample_aspect_ratio;
1639 os->sar = (AVRational){1,1};
1640 av_reduce(&par.num, &par.den,
1641 st->codecpar->width * (int64_t)os->sar.num,
1642 st->codecpar->height * (int64_t)os->sar.den,
1645 if (as->par.num && av_cmp_q(par, as->par)) {
1646 av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
1647 return AVERROR(EINVAL);
1654 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1655 sizeof(os->codec_str));
1656 os->first_pts = AV_NOPTS_VALUE;
1657 os->max_pts = AV_NOPTS_VALUE;
1658 os->last_dts = AV_NOPTS_VALUE;
1659 os->segment_index = 1;
1661 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1662 c->nr_of_streams_to_flush++;
1665 if (!c->has_video && c->seg_duration <= 0) {
1666 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1667 return AVERROR(EINVAL);
1669 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1670 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1672 c->nr_of_streams_flushed = 0;
1673 c->target_latency_refid = -1;
1678 static int dash_write_header(AVFormatContext *s)
1680 DASHContext *c = s->priv_data;
1682 for (i = 0; i < s->nb_streams; i++) {
1683 OutputStream *os = &c->streams[i];
1684 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1687 // Flush init segment
1688 // Only for WebM segment, since for mp4 delay_moov is set and
1689 // the init segment is thus flushed after the first packets.
1690 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1691 (ret = flush_init_segment(s, os)) < 0)
1697 static int add_segment(OutputStream *os, const char *file,
1698 int64_t time, int64_t duration,
1699 int64_t start_pos, int64_t range_length,
1700 int64_t index_length, int next_exp_index)
1704 if (os->nb_segments >= os->segments_size) {
1705 os->segments_size = (os->segments_size + 1) * 2;
1706 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1707 os->segments_size)) < 0) {
1708 os->segments_size = 0;
1709 os->nb_segments = 0;
1713 seg = av_mallocz(sizeof(*seg));
1715 return AVERROR(ENOMEM);
1716 av_strlcpy(seg->file, file, sizeof(seg->file));
1718 seg->duration = duration;
1719 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1720 seg->duration += seg->time;
1723 seg->start_pos = start_pos;
1724 seg->range_length = range_length;
1725 seg->index_length = index_length;
1726 os->segments[os->nb_segments++] = seg;
1727 os->segment_index++;
1728 //correcting the segment index if it has fallen behind the expected value
1729 if (os->segment_index < next_exp_index) {
1730 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1731 file, os->segment_index, next_exp_index);
1732 os->segment_index = next_exp_index;
1737 static void write_styp(AVIOContext *pb)
1740 ffio_wfourcc(pb, "styp");
1741 ffio_wfourcc(pb, "msdh");
1742 avio_wb32(pb, 0); /* minor */
1743 ffio_wfourcc(pb, "msdh");
1744 ffio_wfourcc(pb, "msix");
1747 static void find_index_range(AVFormatContext *s, const char *full_path,
1748 int64_t pos, int *index_length)
1754 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1757 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1758 ff_format_io_close(s, &pb);
1761 ret = avio_read(pb, buf, 8);
1762 ff_format_io_close(s, &pb);
1765 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1767 *index_length = AV_RB32(&buf[0]);
1770 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1771 AVPacket *pkt, AVRational *frame_rate)
1773 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1775 int ret, extradata_size;
1777 if (par->extradata_size)
1780 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1781 if (!extradata_size)
1784 ret = ff_alloc_extradata(par, extradata_size);
1788 memcpy(par->extradata, extradata, extradata_size);
1790 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1795 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1796 DASHContext *c = s->priv_data;
1797 int http_base_proto = ff_is_http_proto(filename);
1799 if (http_base_proto) {
1800 AVIOContext *out = NULL;
1801 AVDictionary *http_opts = NULL;
1803 set_http_options(&http_opts, c);
1804 av_dict_set(&http_opts, "method", "DELETE", 0);
1806 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1807 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1810 av_dict_free(&http_opts);
1811 ff_format_io_close(s, &out);
1813 int res = avpriv_io_delete(filename);
1815 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1816 av_strerror(res, errbuf, sizeof(errbuf));
1817 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1822 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1824 DASHContext *c = s->priv_data;
1825 size_t dirname_len, file_len;
1826 char filename[1024];
1828 dirname_len = strlen(c->dirname);
1829 if (dirname_len >= sizeof(filename)) {
1830 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1831 (uint64_t)dirname_len, c->dirname);
1832 return AVERROR(ENAMETOOLONG);
1835 memcpy(filename, c->dirname, dirname_len);
1837 file_len = strlen(file);
1838 if ((dirname_len + file_len) >= sizeof(filename)) {
1839 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1840 (uint64_t)(dirname_len + file_len), c->dirname, file);
1841 return AVERROR(ENAMETOOLONG);
1844 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1845 dashenc_delete_file(s, filename);
1850 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1852 for (int i = 0; i < remove_count; ++i) {
1853 dashenc_delete_segment_file(s, os->segments[i]->file);
1855 // Delete the segment regardless of whether the file was successfully deleted
1856 av_free(os->segments[i]);
1859 os->nb_segments -= remove_count;
1860 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1863 static int dash_flush(AVFormatContext *s, int final, int stream)
1865 DASHContext *c = s->priv_data;
1868 const char *proto = avio_find_protocol_name(s->url);
1869 int use_rename = proto && !strcmp(proto, "file");
1871 int cur_flush_segment_index = 0, next_exp_index = -1;
1873 cur_flush_segment_index = c->streams[stream].segment_index;
1875 //finding the next segment's expected index, based on the current pts value
1876 if (c->use_template && !c->use_timeline && c->index_correction &&
1877 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1878 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1879 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1880 c->streams[stream].first_pts,
1881 s->streams[stream]->time_base,
1883 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1887 for (i = 0; i < s->nb_streams; i++) {
1888 OutputStream *os = &c->streams[i];
1889 AVStream *st = s->streams[i];
1890 int range_length, index_length = 0;
1892 if (!os->packets_written)
1895 // Flush the single stream that got a keyframe right now.
1896 // Flush all audio streams as well, in sync with video keyframes,
1897 // but not the other video streams.
1898 if (stream >= 0 && i != stream) {
1899 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1900 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1902 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1904 // Make sure we don't flush audio streams multiple times, when
1905 // all video streams are flushed one at a time.
1906 if (c->has_video && os->segment_index > cur_flush_segment_index)
1910 if (!c->single_file) {
1911 if (os->segment_type == SEGMENT_TYPE_MP4 && !os->written_len)
1912 write_styp(os->ctx->pb);
1914 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1917 ret = flush_dynbuf(c, os, &range_length);
1920 os->packets_written = 0;
1922 if (c->single_file) {
1923 find_index_range(s, os->full_path, os->pos, &index_length);
1925 dashenc_io_close(s, &os->out, os->temp_path);
1928 ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1934 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1938 if (!os->muxer_overhead && os->max_pts > os->start_pts)
1939 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1941 av_rescale_q(os->max_pts - os->start_pts,
1942 st->time_base, AV_TIME_BASE_Q);
1943 os->total_pkt_size = 0;
1944 os->total_pkt_duration = 0;
1946 if (!os->bit_rate) {
1947 // calculate average bitrate of first segment
1948 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1952 os->bit_rate = bitrate;
1954 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1955 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1957 os->pos += range_length;
1960 if (c->window_size) {
1961 for (i = 0; i < s->nb_streams; i++) {
1962 OutputStream *os = &c->streams[i];
1963 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1964 if (remove_count > 0)
1965 dashenc_delete_media_segments(s, os, remove_count);
1970 for (i = 0; i < s->nb_streams; i++) {
1971 OutputStream *os = &c->streams[i];
1972 if (os->ctx && os->ctx_inited) {
1973 int64_t file_size = avio_tell(os->ctx->pb);
1974 av_write_trailer(os->ctx);
1975 if (c->global_sidx) {
1976 int j, start_index, start_number;
1977 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1978 get_start_index_number(os, c, &start_index, &start_number);
1979 if (start_index >= os->nb_segments ||
1980 os->segment_type != SEGMENT_TYPE_MP4)
1982 os->init_range_length += sidx_size;
1983 for (j = start_index; j < os->nb_segments; j++) {
1984 Segment *seg = os->segments[j];
1985 seg->start_pos += sidx_size;
1993 if (c->has_video && !final) {
1994 c->nr_of_streams_flushed++;
1995 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1998 c->nr_of_streams_flushed = 0;
2000 ret = write_manifest(s, final);
2005 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
2007 DASHContext *c = s->priv_data;
2008 AVStream *st = s->streams[pkt->stream_index];
2009 OutputStream *os = &c->streams[pkt->stream_index];
2010 AdaptationSet *as = &c->as[os->as_idx - 1];
2011 int64_t seg_end_duration, elapsed_duration;
2014 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
2018 // Fill in a heuristic guess of the packet duration, if none is available.
2019 // The mp4 muxer will do something similar (for the last packet in a fragment)
2020 // if nothing is set (setting it for the other packets doesn't hurt).
2021 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
2022 // invoke its heuristic (this doesn't have to be identical to that algorithm),
2023 // so that we know the exact timestamps of fragments.
2024 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
2025 pkt->duration = pkt->dts - os->last_dts;
2026 os->last_dts = pkt->dts;
2028 // If forcing the stream to start at 0, the mp4 muxer will set the start
2029 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
2030 if (os->first_pts == AV_NOPTS_VALUE &&
2031 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
2032 pkt->pts -= pkt->dts;
2036 if (os->first_pts == AV_NOPTS_VALUE) {
2038 AVProducerReferenceTime *prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT,
2040 if (prft && side_data_size == sizeof(AVProducerReferenceTime) && !prft->flags) {
2041 os->producer_reference_time = prft->wallclock;
2042 if (c->target_latency_refid < 0)
2043 c->target_latency_refid = pkt->stream_index;
2045 os->first_pts = pkt->pts;
2047 os->last_pts = pkt->pts;
2049 if (!c->availability_start_time[0]) {
2050 int64_t start_time_us = av_gettime();
2051 c->start_time_s = start_time_us / 1000000;
2052 format_date(c->availability_start_time,
2053 sizeof(c->availability_start_time), start_time_us);
2056 if (!os->packets_written)
2057 os->availability_time_offset = 0;
2059 if (!os->availability_time_offset &&
2060 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2061 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2062 AdaptationSet *as = &c->as[os->as_idx - 1];
2063 int64_t frame_duration = 0;
2065 switch (os->frag_type) {
2066 case FRAG_TYPE_DURATION:
2067 frame_duration = os->frag_duration;
2069 case FRAG_TYPE_EVERY_FRAME:
2070 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2074 os->availability_time_offset = ((double) os->seg_duration -
2075 frame_duration) / AV_TIME_BASE;
2076 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2079 if (c->use_template && !c->use_timeline) {
2080 elapsed_duration = pkt->pts - os->first_pts;
2081 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2083 elapsed_duration = pkt->pts - os->start_pts;
2084 seg_end_duration = os->seg_duration;
2088 (os->frag_type == FRAG_TYPE_PFRAMES ||
2089 as->trick_idx >= 0)) {
2090 // Parse the packets only in scenarios where it's needed
2093 av_parser_parse2(os->parser, os->parser_avctx,
2094 &data, &size, pkt->data, pkt->size,
2095 pkt->pts, pkt->dts, pkt->pos);
2097 os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
2100 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2101 av_compare_ts(elapsed_duration, st->time_base,
2102 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2103 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2104 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2107 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2111 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2112 if (c->last_duration < os->last_duration*9/10 ||
2113 c->last_duration > os->last_duration*11/10) {
2114 av_log(s, AV_LOG_WARNING,
2115 "Segment durations differ too much, enable use_timeline "
2116 "and use_template, or keep a stricter keyframe interval\n");
2121 if (c->write_prft && os->producer_reference_time && !os->producer_reference_time_str[0])
2122 format_date(os->producer_reference_time_str,
2123 sizeof(os->producer_reference_time_str),
2124 os->producer_reference_time);
2126 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2130 if (!os->packets_written) {
2131 // If we wrote a previous segment, adjust the start time of the segment
2132 // to the end of the previous one (which is the same as the mp4 muxer
2133 // does). This avoids gaps in the timeline.
2134 if (os->max_pts != AV_NOPTS_VALUE)
2135 os->start_pts = os->max_pts;
2137 os->start_pts = pkt->pts;
2139 if (os->max_pts == AV_NOPTS_VALUE)
2140 os->max_pts = pkt->pts + pkt->duration;
2142 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2144 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2145 os->frag_type == FRAG_TYPE_PFRAMES &&
2146 os->packets_written) {
2147 av_assert0(os->parser);
2148 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2149 st->codecpar->video_delay &&
2150 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2151 pkt->flags & AV_PKT_FLAG_KEY) {
2152 ret = av_write_frame(os->ctx, NULL);
2156 if (!os->availability_time_offset) {
2157 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2159 os->availability_time_offset = ((double) os->seg_duration -
2160 frag_duration) / AV_TIME_BASE;
2161 as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2166 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
2167 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2168 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2171 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2174 os->packets_written++;
2175 os->total_pkt_size += pkt->size;
2176 os->total_pkt_duration += pkt->duration;
2177 os->last_flags = pkt->flags;
2179 if (!os->init_range_length)
2180 flush_init_segment(s, os);
2182 //open the output context when the first frame of a segment is ready
2183 if (!c->single_file && os->packets_written == 1) {
2184 AVDictionary *opts = NULL;
2185 const char *proto = avio_find_protocol_name(s->url);
2186 int use_rename = proto && !strcmp(proto, "file");
2187 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2188 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2189 os->media_seg_name, pkt->stream_index,
2190 os->segment_index, os->bit_rate, os->start_pts);
2191 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2193 snprintf(os->temp_path, sizeof(os->temp_path),
2194 use_rename ? "%s.tmp" : "%s", os->full_path);
2195 set_http_options(&opts, c);
2196 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2197 av_dict_free(&opts);
2199 return handle_io_open_error(s, ret, os->temp_path);
2202 char *prefetch_url = use_rename ? NULL : os->filename;
2203 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2207 //write out the data immediately in streaming mode
2208 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2210 uint8_t *buf = NULL;
2211 if (!os->written_len)
2212 write_styp(os->ctx->pb);
2213 avio_flush(os->ctx->pb);
2214 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2216 avio_write(os->out, buf + os->written_len, len - os->written_len);
2217 avio_flush(os->out);
2219 os->written_len = len;
2225 static int dash_write_trailer(AVFormatContext *s)
2227 DASHContext *c = s->priv_data;
2230 if (s->nb_streams > 0) {
2231 OutputStream *os = &c->streams[0];
2232 // If no segments have been written so far, try to do a crude
2233 // guess of the segment duration
2234 if (!c->last_duration)
2235 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2236 s->streams[0]->time_base,
2238 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2239 s->streams[0]->time_base,
2242 dash_flush(s, 1, -1);
2244 if (c->remove_at_exit) {
2245 for (i = 0; i < s->nb_streams; ++i) {
2246 OutputStream *os = &c->streams[i];
2247 dashenc_delete_media_segments(s, os, os->nb_segments);
2248 dashenc_delete_segment_file(s, os->initfile);
2249 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2250 char filename[1024];
2251 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2252 dashenc_delete_file(s, filename);
2255 dashenc_delete_file(s, s->url);
2257 if (c->hls_playlist && c->master_playlist_created) {
2258 char filename[1024];
2259 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2260 dashenc_delete_file(s, filename);
2267 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2269 DASHContext *c = s->priv_data;
2270 OutputStream *os = &c->streams[avpkt->stream_index];
2271 AVFormatContext *oc = os->ctx;
2272 if (oc->oformat->check_bitstream) {
2274 AVPacket pkt = *avpkt;
2275 pkt.stream_index = 0;
2276 ret = oc->oformat->check_bitstream(oc, &pkt);
2278 AVStream *st = s->streams[avpkt->stream_index];
2279 AVStream *ost = oc->streams[0];
2280 st->internal->bsfcs = ost->internal->bsfcs;
2281 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2282 ost->internal->bsfcs = NULL;
2283 ost->internal->nb_bsfcs = 0;
2290 #define OFFSET(x) offsetof(DASHContext, x)
2291 #define E AV_OPT_FLAG_ENCODING_PARAM
2292 static const AVOption options[] = {
2293 { "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 },
2294 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2295 { "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 },
2296 #if FF_API_DASH_MIN_SEG_DURATION
2297 { "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 },
2299 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2300 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2301 { "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"},
2302 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2303 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2304 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2305 { "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"},
2306 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2307 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2308 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2309 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2310 { "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 },
2311 { "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 },
2312 { "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 },
2313 { "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 },
2314 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2315 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2316 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2317 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2318 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2319 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2320 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2321 { "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},
2322 { "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 },
2323 { "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"},
2324 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2325 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2326 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2327 { "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 },
2328 { "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 },
2329 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2330 { "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},
2331 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2332 { "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"},
2333 { "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"},
2334 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2335 { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2336 { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2340 static const AVClass dash_class = {
2341 .class_name = "dash muxer",
2342 .item_name = av_default_item_name,
2344 .version = LIBAVUTIL_VERSION_INT,
2347 AVOutputFormat ff_dash_muxer = {
2349 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2350 .extensions = "mpd",
2351 .priv_data_size = sizeof(DASHContext),
2352 .audio_codec = AV_CODEC_ID_AAC,
2353 .video_codec = AV_CODEC_ID_H264,
2354 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2356 .write_header = dash_write_header,
2357 .write_packet = dash_write_packet,
2358 .write_trailer = dash_write_trailer,
2359 .deinit = dash_free,
2360 .check_bitstream = dash_check_bitstream,
2361 .priv_class = &dash_class,