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;
170 AVDictionary *http_opts;
173 int master_playlist_created;
174 AVIOContext *mpd_out;
175 AVIOContext *m3u8_out;
178 int index_correction;
179 AVDictionary *format_options;
181 SegmentType segment_type_option; /* segment type as specified in options */
182 int ignore_io_errors;
185 int master_publish_rate;
186 int nr_of_streams_to_flush;
187 int nr_of_streams_flushed;
190 int64_t max_gop_size;
192 int64_t target_latency;
193 int target_latency_refid;
196 static struct codec_string {
200 { AV_CODEC_ID_VP8, "vp8" },
201 { AV_CODEC_ID_VP9, "vp9" },
202 { AV_CODEC_ID_VORBIS, "vorbis" },
203 { AV_CODEC_ID_OPUS, "opus" },
204 { AV_CODEC_ID_FLAC, "flac" },
208 static struct format_string {
209 SegmentType segment_type;
212 { SEGMENT_TYPE_AUTO, "auto" },
213 { SEGMENT_TYPE_MP4, "mp4" },
214 { SEGMENT_TYPE_WEBM, "webm" },
218 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
219 AVDictionary **options) {
220 DASHContext *c = s->priv_data;
221 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
222 int err = AVERROR_MUXER_NOT_FOUND;
223 if (!*pb || !http_base_proto || !c->http_persistent) {
224 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
225 #if CONFIG_HTTP_PROTOCOL
227 URLContext *http_url_context = ffio_geturlcontext(*pb);
228 av_assert0(http_url_context);
229 err = ff_http_do_new_request(http_url_context, filename);
231 ff_format_io_close(s, pb);
237 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
238 DASHContext *c = s->priv_data;
239 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
244 if (!http_base_proto || !c->http_persistent) {
245 ff_format_io_close(s, pb);
246 #if CONFIG_HTTP_PROTOCOL
248 URLContext *http_url_context = ffio_geturlcontext(*pb);
249 av_assert0(http_url_context);
251 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
256 static const char *get_format_str(SegmentType segment_type) {
258 for (i = 0; i < SEGMENT_TYPE_NB; i++)
259 if (formats[i].segment_type == segment_type)
260 return formats[i].str;
264 static const char *get_extension_str(SegmentType type, int single_file)
268 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
269 case SEGMENT_TYPE_WEBM: return "webm";
270 default: return NULL;
274 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
275 DASHContext *c = s->priv_data;
276 char errbuf[AV_ERROR_MAX_STRING_SIZE];
277 av_strerror(err, errbuf, sizeof(errbuf));
278 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
279 "Unable to open %s for writing: %s\n", url, errbuf);
280 return c->ignore_io_errors ? 0 : err;
283 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
285 if (segment_type == SEGMENT_TYPE_AUTO) {
286 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
287 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
288 segment_type = SEGMENT_TYPE_WEBM;
290 segment_type = SEGMENT_TYPE_MP4;
297 static int init_segment_types(AVFormatContext *s)
299 DASHContext *c = s->priv_data;
300 int has_mp4_streams = 0;
301 for (int i = 0; i < s->nb_streams; ++i) {
302 OutputStream *os = &c->streams[i];
303 SegmentType segment_type = select_segment_type(
304 c->segment_type_option, s->streams[i]->codecpar->codec_id);
305 os->segment_type = segment_type;
306 os->format_name = get_format_str(segment_type);
307 if (!os->format_name) {
308 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
309 return AVERROR_MUXER_NOT_FOUND;
311 os->extension_name = get_extension_str(segment_type, c->single_file);
312 if (!os->extension_name) {
313 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
314 return AVERROR_MUXER_NOT_FOUND;
317 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
320 if (c->hls_playlist && !has_mp4_streams) {
321 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
328 static int check_file_extension(const char *filename, const char *extension) {
330 if (!filename || !extension)
332 dot = strrchr(filename, '.');
333 if (dot && !strcmp(dot + 1, extension))
338 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
339 AVRational *frame_rate, char *str, int size) {
341 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
343 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
344 vpcc.profile, vpcc.level, vpcc.bitdepth);
346 // Default to just vp9 in case of error while finding out profile or level
347 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
348 av_strlcpy(str, "vp9", size);
353 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
354 AVRational *frame_rate, char *str, int size)
356 const AVCodecTag *tags[2] = { NULL, NULL };
360 // common Webm codecs are not part of RFC 6381
361 for (i = 0; codecs[i].id; i++)
362 if (codecs[i].id == par->codec_id) {
363 if (codecs[i].id == AV_CODEC_ID_VP9) {
364 set_vp9_codec_str(s, par, frame_rate, str, size);
366 av_strlcpy(str, codecs[i].str, size);
371 // for codecs part of RFC 6381
372 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
373 tags[0] = ff_codec_movvideo_tags;
374 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
375 tags[0] = ff_codec_movaudio_tags;
379 tag = par->codec_tag;
381 tag = av_codec_get_tag(tags, par->codec_id);
389 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
391 tags[0] = ff_mp4_obj_type;
392 oti = av_codec_get_tag(tags, par->codec_id);
394 av_strlcatf(str, size, ".%02"PRIx32, oti);
398 if (tag == MKTAG('m', 'p', '4', 'a')) {
399 if (par->extradata_size >= 2) {
400 int aot = par->extradata[0] >> 3;
402 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
403 av_strlcatf(str, size, ".%d", aot);
405 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
406 // Unimplemented, should output ProfileLevelIndication as a decimal number
407 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
409 } else if (!strcmp(str, "avc1")) {
410 uint8_t *tmpbuf = NULL;
411 uint8_t *extradata = par->extradata;
412 int extradata_size = par->extradata_size;
415 if (extradata[0] != 1) {
417 if (avio_open_dyn_buf(&pb) < 0)
419 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
420 ffio_free_dyn_buf(&pb);
423 extradata_size = avio_close_dyn_buf(pb, &extradata);
427 if (extradata_size >= 4)
428 av_strlcatf(str, size, ".%02x%02x%02x",
429 extradata[1], extradata[2], extradata[3]);
431 } else if (!strcmp(str, "av01")) {
432 AV1SequenceParameters seq;
433 if (!par->extradata_size)
435 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
438 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
439 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
440 if (seq.color_description_present_flag)
441 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
443 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
444 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
449 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
454 return AVERROR(EINVAL);
458 av_write_frame(os->ctx, NULL);
459 avio_flush(os->ctx->pb);
461 if (!c->single_file) {
463 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
466 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
471 return avio_open_dyn_buf(&os->ctx->pb);
473 *range_length = avio_tell(os->ctx->pb) - os->pos;
478 static void set_http_options(AVDictionary **options, DASHContext *c)
481 av_dict_set(options, "method", c->method, 0);
482 av_dict_copy(options, c->http_opts, 0);
484 av_dict_set(options, "user_agent", c->user_agent, 0);
485 if (c->http_persistent)
486 av_dict_set_int(options, "multiple_requests", 1, 0);
488 av_dict_set_int(options, "timeout", c->timeout, 0);
491 static void get_hls_playlist_name(char *playlist_name, int string_size,
492 const char *base_url, int id) {
494 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
496 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
499 static void get_start_index_number(OutputStream *os, DASHContext *c,
500 int *start_index, int *start_number) {
503 if (c->window_size) {
504 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
505 *start_number = FFMAX(os->segment_index - c->window_size, 1);
509 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
510 int representation_id, int final,
511 char *prefetch_url) {
512 DASHContext *c = s->priv_data;
513 int timescale = os->ctx->streams[0]->time_base.den;
514 char temp_filename_hls[1024];
515 char filename_hls[1024];
516 AVDictionary *http_opts = NULL;
517 int target_duration = 0;
519 const char *proto = avio_find_protocol_name(c->dirname);
520 int use_rename = proto && !strcmp(proto, "file");
521 int i, start_index, start_number;
522 double prog_date_time = 0;
524 get_start_index_number(os, c, &start_index, &start_number);
526 if (!c->hls_playlist || start_index >= os->nb_segments ||
527 os->segment_type != SEGMENT_TYPE_MP4)
530 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
531 c->dirname, representation_id);
533 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
535 set_http_options(&http_opts, c);
536 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
537 av_dict_free(&http_opts);
539 handle_io_open_error(s, ret, temp_filename_hls);
542 for (i = start_index; i < os->nb_segments; i++) {
543 Segment *seg = os->segments[i];
544 double duration = (double) seg->duration / timescale;
545 if (target_duration <= duration)
546 target_duration = lrint(duration);
549 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
550 start_number, PLAYLIST_TYPE_NONE, 0);
552 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
553 os->init_range_length, os->init_start_pos);
555 for (i = start_index; i < os->nb_segments; i++) {
556 Segment *seg = os->segments[i];
558 if (prog_date_time == 0) {
559 if (os->nb_segments == 1)
560 prog_date_time = c->start_time_s;
562 prog_date_time = seg->prog_date_time;
564 seg->prog_date_time = prog_date_time;
566 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
567 (double) seg->duration / timescale, 0,
568 seg->range_length, seg->start_pos, NULL,
569 c->single_file ? os->initfile : seg->file,
570 &prog_date_time, 0, 0, 0);
572 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
577 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
580 ff_hls_write_end_list(c->m3u8_out);
582 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
585 ff_rename(temp_filename_hls, filename_hls, os->ctx);
588 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
590 DASHContext *c = s->priv_data;
591 int ret, range_length;
593 ret = flush_dynbuf(c, os, &range_length);
597 os->pos = os->init_range_length = range_length;
598 if (!c->single_file) {
600 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
601 dashenc_io_close(s, &os->out, filename);
606 static void dash_free(AVFormatContext *s)
608 DASHContext *c = s->priv_data;
612 for (i = 0; i < c->nb_as; i++) {
613 av_dict_free(&c->as[i].metadata);
614 av_freep(&c->as[i].descriptor);
622 for (i = 0; i < s->nb_streams; i++) {
623 OutputStream *os = &c->streams[i];
624 if (os->ctx && os->ctx->pb) {
626 ffio_free_dyn_buf(&os->ctx->pb);
628 avio_close(os->ctx->pb);
630 ff_format_io_close(s, &os->out);
631 avformat_free_context(os->ctx);
632 avcodec_free_context(&os->parser_avctx);
633 av_parser_close(os->parser);
634 for (j = 0; j < os->nb_segments; j++)
635 av_free(os->segments[j]);
636 av_free(os->segments);
637 av_freep(&os->single_file_name);
638 av_freep(&os->init_seg_name);
639 av_freep(&os->media_seg_name);
641 av_freep(&c->streams);
643 ff_format_io_close(s, &c->mpd_out);
644 ff_format_io_close(s, &c->m3u8_out);
647 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
648 int representation_id, int final)
650 DASHContext *c = s->priv_data;
651 int i, start_index, start_number;
652 get_start_index_number(os, c, &start_index, &start_number);
654 if (c->use_template) {
655 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
656 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
657 if (!c->use_timeline) {
658 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
659 if (c->streaming && os->availability_time_offset)
660 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
661 os->availability_time_offset);
663 if (c->ldash && !final && os->frag_type != FRAG_TYPE_NONE &&
664 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
665 avio_printf(out, "availabilityTimeComplete=\"false\" ");
667 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
668 if (c->presentation_time_offset)
669 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
670 avio_printf(out, ">\n");
671 if (c->use_timeline) {
672 int64_t cur_time = 0;
673 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
674 for (i = start_index; i < os->nb_segments; ) {
675 Segment *seg = os->segments[i];
677 avio_printf(out, "\t\t\t\t\t\t<S ");
678 if (i == start_index || seg->time != cur_time) {
679 cur_time = seg->time;
680 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
682 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
683 while (i + repeat + 1 < os->nb_segments &&
684 os->segments[i + repeat + 1]->duration == seg->duration &&
685 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
688 avio_printf(out, "r=\"%d\" ", repeat);
689 avio_printf(out, "/>\n");
691 cur_time += (1 + repeat) * seg->duration;
693 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
695 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
696 } else if (c->single_file) {
697 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
698 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);
699 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);
700 for (i = start_index; i < os->nb_segments; i++) {
701 Segment *seg = os->segments[i];
702 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
703 if (seg->index_length)
704 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
705 avio_printf(out, "/>\n");
707 avio_printf(out, "\t\t\t\t</SegmentList>\n");
709 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);
710 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
711 for (i = start_index; i < os->nb_segments; i++) {
712 Segment *seg = os->segments[i];
713 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
715 avio_printf(out, "\t\t\t\t</SegmentList>\n");
717 if (!c->lhls || final) {
718 write_hls_media_playlist(os, s, representation_id, final, NULL);
723 static char *xmlescape(const char *str) {
724 int outlen = strlen(str)*3/2 + 6;
725 char *out = av_realloc(NULL, outlen + 1);
729 for (; *str; str++) {
730 if (pos + 6 > outlen) {
732 outlen = 2 * outlen + 6;
733 tmp = av_realloc(out, outlen + 1);
741 memcpy(&out[pos], "&", 5);
743 } else if (*str == '<') {
744 memcpy(&out[pos], "<", 4);
746 } else if (*str == '>') {
747 memcpy(&out[pos], ">", 4);
749 } else if (*str == '\'') {
750 memcpy(&out[pos], "'", 6);
752 } else if (*str == '\"') {
753 memcpy(&out[pos], """, 6);
763 static void write_time(AVIOContext *out, int64_t time)
765 int seconds = time / AV_TIME_BASE;
766 int fractions = time % AV_TIME_BASE;
767 int minutes = seconds / 60;
768 int hours = minutes / 60;
771 avio_printf(out, "PT");
773 avio_printf(out, "%dH", hours);
774 if (hours || minutes)
775 avio_printf(out, "%dM", minutes);
776 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
779 static void format_date(char *buf, int size, int64_t time_us)
781 struct tm *ptm, tmbuf;
782 int64_t time_ms = time_us / 1000;
783 const time_t time_s = time_ms / 1000;
784 int millisec = time_ms - (time_s * 1000);
785 ptm = gmtime_r(&time_s, &tmbuf);
788 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
793 snprintf(buf + len, size - len, ".%03dZ", millisec);
797 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
800 DASHContext *c = s->priv_data;
801 AdaptationSet *as = &c->as[as_index];
802 AVDictionaryEntry *lang, *role;
805 avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
806 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
807 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)
808 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
809 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))
810 avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
811 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
812 avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
813 avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
815 lang = av_dict_get(as->metadata, "language", NULL, 0);
817 avio_printf(out, " lang=\"%s\"", lang->value);
818 avio_printf(out, ">\n");
820 if (!final && c->ldash && as->max_frag_duration)
821 avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
822 role = av_dict_get(as->metadata, "role", NULL, 0);
824 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
826 avio_printf(out, "\t\t\t%s\n", as->descriptor);
827 for (i = 0; i < s->nb_streams; i++) {
828 AVStream *st = s->streams[i];
829 OutputStream *os = &c->streams[i];
830 char bandwidth_str[64] = {'\0'};
832 if (os->as_idx - 1 != as_index)
835 if (os->bit_rate > 0)
836 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
839 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
840 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
841 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
842 if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
843 avio_printf(out, " scanType=\"unknown\"");
844 else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
845 avio_printf(out, " scanType=\"interlaced\"");
846 avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
847 if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
848 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
849 avio_printf(out, ">\n");
851 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
852 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
853 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
854 s->streams[i]->codecpar->channels);
856 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
857 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"encoder\" wallclockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
858 i, os->producer_reference_time_str, c->presentation_time_offset);
859 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
860 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
862 if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE &&
863 (os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
864 avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
865 output_segment_list(os, out, s, i, final);
866 avio_printf(out, "\t\t\t</Representation>\n");
868 avio_printf(out, "\t\t</AdaptationSet>\n");
873 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
875 DASHContext *c = s->priv_data;
878 if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
879 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
880 return AVERROR(EINVAL);
882 mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
884 return AVERROR(ENOMEM);
888 *as = &c->as[c->nb_as - 1];
889 memset(*as, 0, sizeof(**as));
890 (*as)->media_type = type;
891 (*as)->frag_type = -1;
896 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
898 DASHContext *c = s->priv_data;
899 AdaptationSet *as = &c->as[as_idx - 1];
900 OutputStream *os = &c->streams[i];
902 if (as->media_type != s->streams[i]->codecpar->codec_type) {
903 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
904 return AVERROR(EINVAL);
905 } else if (os->as_idx) {
906 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
907 return AVERROR(EINVAL);
909 if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
910 av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
911 return AVERROR(EINVAL);
919 static int parse_adaptation_sets(AVFormatContext *s)
921 DASHContext *c = s->priv_data;
922 const char *p = c->adaptation_sets;
923 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
927 // default: one AdaptationSet for each stream
929 for (i = 0; i < s->nb_streams; i++) {
930 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
934 c->streams[i].as_idx = c->nb_as;
940 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
941 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
942 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2 and so on
943 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
944 // descriptor_str should be a self-closing xml tag.
945 // seg_duration and frag_duration have the same syntax as the global options of
946 // the same name, and the former have precedence over them if set.
952 } else if (state == new_set && av_strstart(p, "id=", &p)) {
953 char id_str[10], *end_str;
956 snprintf(id_str, sizeof(id_str), "%.*s", n, p);
958 i = strtol(id_str, &end_str, 10);
959 if (id_str == end_str || i < 0 || i > c->nb_as) {
960 av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
961 return AVERROR(EINVAL);
964 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
971 state = parse_default;
972 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
973 state = parse_seg_duration;
974 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
975 state = parse_frag_duration;
976 } else if (state == parse_seg_duration || state == parse_frag_duration) {
981 snprintf(str, sizeof(str), "%.*s", n, p);
986 ret = av_parse_time(&usecs, str, 1);
988 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
992 if (state == parse_seg_duration)
993 as->seg_duration = usecs;
995 as->frag_duration = usecs;
996 state = parse_default;
997 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
1000 n = strcspn(p, ",");
1001 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
1006 if (!strcmp(type_str, "duration"))
1007 as->frag_type = FRAG_TYPE_DURATION;
1008 else if (!strcmp(type_str, "pframes"))
1009 as->frag_type = FRAG_TYPE_PFRAMES;
1010 else if (!strcmp(type_str, "every_frame"))
1011 as->frag_type = FRAG_TYPE_EVERY_FRAME;
1012 else if (!strcmp(type_str, "none"))
1013 as->frag_type = FRAG_TYPE_NONE;
1015 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
1018 state = parse_default;
1019 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
1020 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
1021 if (n < strlen(p)) {
1022 as->descriptor = av_strndup(p, n);
1024 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
1025 return AVERROR(EINVAL);
1030 state = parse_default;
1031 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
1032 state = parsing_streams;
1033 } else if (state == parsing_streams) {
1034 AdaptationSet *as = &c->as[c->nb_as - 1];
1035 char idx_str[8], *end_str;
1037 n = strcspn(p, " ,");
1038 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
1041 // if value is "a" or "v", map all streams of that type
1042 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
1043 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
1044 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
1046 for (i = 0; i < s->nb_streams; i++) {
1047 if (s->streams[i]->codecpar->codec_type != type)
1050 as->media_type = s->streams[i]->codecpar->codec_type;
1052 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1055 } else { // select single stream
1056 i = strtol(idx_str, &end_str, 10);
1057 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1058 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1059 return AVERROR(EINVAL);
1061 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1063 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1064 as->media_type = s->streams[i]->codecpar->codec_type;
1067 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1076 return AVERROR(EINVAL);
1081 // check for unassigned streams
1082 for (i = 0; i < s->nb_streams; i++) {
1083 OutputStream *os = &c->streams[i];
1085 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1086 return AVERROR(EINVAL);
1092 static int write_manifest(AVFormatContext *s, int final)
1094 DASHContext *c = s->priv_data;
1096 char temp_filename[1024];
1098 const char *proto = avio_find_protocol_name(s->url);
1099 int use_rename = proto && !strcmp(proto, "file");
1100 static unsigned int warned_non_file = 0;
1101 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1102 AVDictionary *opts = NULL;
1104 if (!use_rename && !warned_non_file++)
1105 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1107 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1108 set_http_options(&opts, c);
1109 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1110 av_dict_free(&opts);
1112 return handle_io_open_error(s, ret, temp_filename);
1115 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1116 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1117 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1118 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1119 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1121 if (c->profile & MPD_PROFILE_DASH)
1122 avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
1123 if (c->profile & MPD_PROFILE_DVB)
1124 avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
1125 avio_printf(out, "\ttype=\"%s\"\n",
1126 final ? "static" : "dynamic");
1128 avio_printf(out, "\tmediaPresentationDuration=\"");
1129 write_time(out, c->total_duration);
1130 avio_printf(out, "\"\n");
1132 int64_t update_period = c->last_duration / AV_TIME_BASE;
1134 if (c->use_template && !c->use_timeline)
1135 update_period = 500;
1136 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1138 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1139 if (c->availability_start_time[0])
1140 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1141 format_date(now_str, sizeof(now_str), av_gettime());
1143 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1144 if (c->window_size && c->use_template) {
1145 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1146 write_time(out, c->last_duration * c->window_size);
1147 avio_printf(out, "\"\n");
1150 avio_printf(out, "\tminBufferTime=\"");
1151 write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
1152 avio_printf(out, "\">\n");
1153 avio_printf(out, "\t<ProgramInformation>\n");
1155 char *escaped = xmlescape(title->value);
1156 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1159 avio_printf(out, "\t</ProgramInformation>\n");
1160 if (!final && c->target_latency && c->target_latency_refid >= 0) {
1161 avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
1162 avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
1163 if (s->nb_streams > 1)
1164 avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
1165 avio_printf(out, "/>\n");
1166 avio_printf(out, "\t</ServiceDescription>\n");
1169 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1170 OutputStream *os = &c->streams[0];
1171 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1172 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1173 avio_printf(out, "\t<Period id=\"0\" start=\"");
1174 write_time(out, start_time);
1175 avio_printf(out, "\">\n");
1177 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1180 for (i = 0; i < c->nb_as; i++) {
1181 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1184 avio_printf(out, "\t</Period>\n");
1186 if (c->utc_timing_url)
1187 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1189 avio_printf(out, "</MPD>\n");
1191 dashenc_io_close(s, &c->mpd_out, temp_filename);
1194 if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
1198 if (c->hls_playlist) {
1199 char filename_hls[1024];
1200 const char *audio_group = "A1";
1201 char audio_codec_str[128] = "\0";
1203 int max_audio_bitrate = 0;
1205 // Publish master playlist only the configured rate
1206 if (c->master_playlist_created && (!c->master_publish_rate ||
1207 c->streams[0].segment_index % c->master_publish_rate))
1211 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1213 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1215 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1217 set_http_options(&opts, c);
1218 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1219 av_dict_free(&opts);
1221 return handle_io_open_error(s, ret, temp_filename);
1224 ff_hls_write_playlist_version(c->m3u8_out, 7);
1226 for (i = 0; i < s->nb_streams; i++) {
1227 char playlist_file[64];
1228 AVStream *st = s->streams[i];
1229 OutputStream *os = &c->streams[i];
1230 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1232 if (os->segment_type != SEGMENT_TYPE_MP4)
1234 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1235 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1236 playlist_file, NULL, i, is_default);
1237 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1238 os->muxer_overhead, max_audio_bitrate);
1239 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1240 if (strlen(audio_codec_str))
1241 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1242 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1247 for (i = 0; i < s->nb_streams; i++) {
1248 char playlist_file[64];
1249 char codec_str[128];
1250 AVStream *st = s->streams[i];
1251 OutputStream *os = &c->streams[i];
1252 char *agroup = NULL;
1253 char *codec_str_ptr = NULL;
1254 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1255 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1257 if (os->segment_type != SEGMENT_TYPE_MP4)
1259 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1260 if (max_audio_bitrate) {
1261 agroup = (char *)audio_group;
1262 stream_bitrate += max_audio_bitrate;
1263 av_strlcat(codec_str, ",", sizeof(codec_str));
1264 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1266 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1267 codec_str_ptr = codec_str;
1269 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1270 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1271 playlist_file, agroup,
1272 codec_str_ptr, NULL);
1274 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1276 if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
1278 c->master_playlist_created = 1;
1284 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1286 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1288 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1292 static int dash_init(AVFormatContext *s)
1294 DASHContext *c = s->priv_data;
1297 char basename[1024];
1299 c->nr_of_streams_to_flush = 0;
1300 if (c->single_file_name)
1303 c->use_template = 0;
1306 av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
1307 return AVERROR(EINVAL);
1309 #if FF_API_DASH_MIN_SEG_DURATION
1310 if (c->min_seg_duration != 5000000) {
1311 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1312 c->seg_duration = c->min_seg_duration;
1315 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1316 av_log(s, AV_LOG_ERROR,
1317 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1318 return AVERROR_EXPERIMENTAL;
1321 if (c->lhls && !c->streaming) {
1322 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1326 if (c->lhls && !c->hls_playlist) {
1327 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1331 if (c->ldash && !c->streaming) {
1332 av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
1336 if (c->target_latency && !c->streaming) {
1337 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
1338 c->target_latency = 0;
1341 if (c->global_sidx && !c->single_file) {
1342 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1346 if (c->global_sidx && c->streaming) {
1347 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1350 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1351 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1352 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1355 if (c->write_prft && !c->utc_timing_url) {
1356 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1360 if (c->write_prft && !c->streaming) {
1361 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1365 if (c->target_latency && !c->write_prft) {
1366 av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
1367 c->target_latency = 0;
1370 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1371 ptr = strrchr(c->dirname, '/');
1373 av_strlcpy(basename, &ptr[1], sizeof(basename));
1376 c->dirname[0] = '\0';
1377 av_strlcpy(basename, s->url, sizeof(basename));
1380 ptr = strrchr(basename, '.');
1384 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1386 return AVERROR(ENOMEM);
1388 if ((ret = parse_adaptation_sets(s)) < 0)
1391 if ((ret = init_segment_types(s)) < 0)
1394 for (i = 0; i < s->nb_streams; i++) {
1395 OutputStream *os = &c->streams[i];
1396 AdaptationSet *as = &c->as[os->as_idx - 1];
1397 AVFormatContext *ctx;
1399 AVDictionary *opts = NULL;
1400 char filename[1024];
1402 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1403 if (!os->bit_rate) {
1404 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1405 AV_LOG_ERROR : AV_LOG_WARNING;
1406 av_log(s, level, "No bit rate set for stream %d\n", i);
1407 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1408 return AVERROR(EINVAL);
1411 // copy AdaptationSet language and role from stream metadata
1412 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1413 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1415 if (c->init_seg_name) {
1416 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1417 if (!os->init_seg_name)
1418 return AVERROR(ENOMEM);
1420 if (c->media_seg_name) {
1421 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1422 if (!os->media_seg_name)
1423 return AVERROR(ENOMEM);
1425 if (c->single_file_name) {
1426 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1427 if (!os->single_file_name)
1428 return AVERROR(ENOMEM);
1431 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1432 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1433 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1434 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1435 av_log(s, AV_LOG_WARNING,
1436 "One or many segment file names doesn't end with .webm. "
1437 "Override -init_seg_name and/or -media_seg_name and/or "
1438 "-single_file_name to end with the extension .webm\n");
1441 // Streaming not supported as matroskaenc buffers internally before writing the output
1442 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1447 os->ctx = ctx = avformat_alloc_context();
1449 return AVERROR(ENOMEM);
1451 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1453 return AVERROR_MUXER_NOT_FOUND;
1454 ctx->interrupt_callback = s->interrupt_callback;
1455 ctx->opaque = s->opaque;
1456 ctx->io_close = s->io_close;
1457 ctx->io_open = s->io_open;
1458 ctx->strict_std_compliance = s->strict_std_compliance;
1460 if (!(st = avformat_new_stream(ctx, NULL)))
1461 return AVERROR(ENOMEM);
1462 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1463 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1464 st->time_base = s->streams[i]->time_base;
1465 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1466 ctx->avoid_negative_ts = s->avoid_negative_ts;
1467 ctx->flags = s->flags;
1469 os->parser = av_parser_init(st->codecpar->codec_id);
1471 os->parser_avctx = avcodec_alloc_context3(NULL);
1472 if (!os->parser_avctx)
1473 return AVERROR(ENOMEM);
1474 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1477 // We only want to parse frame headers
1478 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1481 if (c->single_file) {
1482 if (os->single_file_name)
1483 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1485 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1487 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1489 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1490 set_http_options(&opts, c);
1491 if (!c->single_file) {
1492 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1494 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1496 ctx->url = av_strdup(filename);
1497 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1499 av_dict_free(&opts);
1502 os->init_start_pos = 0;
1504 av_dict_copy(&opts, c->format_options, 0);
1505 if (!as->seg_duration)
1506 as->seg_duration = c->seg_duration;
1507 if (!as->frag_duration)
1508 as->frag_duration = c->frag_duration;
1509 if (as->frag_type < 0)
1510 as->frag_type = c->frag_type;
1511 os->seg_duration = as->seg_duration;
1512 os->frag_duration = as->frag_duration;
1513 os->frag_type = as->frag_type;
1515 if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
1516 av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
1517 return AVERROR(EINVAL);
1520 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1521 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1522 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1524 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1525 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1526 return AVERROR(EINVAL);
1528 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1529 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1530 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1531 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1534 if (os->segment_type == SEGMENT_TYPE_MP4) {
1536 // skip_sidx : Reduce bitrate overhead
1537 // skip_trailer : Avoids growing memory usage with time
1538 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
1541 av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
1543 av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
1545 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1546 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1548 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1549 if (os->frag_type == FRAG_TYPE_DURATION)
1550 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1552 av_dict_set(&opts, "write_prft", "wallclock", 0);
1554 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1555 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1556 av_dict_set_int(&opts, "dash", 1, 0);
1557 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1558 av_dict_set_int(&opts, "live", 1, 0);
1560 ret = avformat_init_output(ctx, &opts);
1561 av_dict_free(&opts);
1565 avio_flush(ctx->pb);
1567 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1569 s->streams[i]->time_base = st->time_base;
1570 // If the muxer wants to shift timestamps, request to have them shifted
1571 // already before being handed to this muxer, so we don't have mismatches
1572 // between the MPD and the actual segments.
1573 s->avoid_negative_ts = ctx->avoid_negative_ts;
1574 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1575 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1577 if (avg_frame_rate.num > 0) {
1578 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1579 as->min_frame_rate = avg_frame_rate;
1580 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1581 as->max_frame_rate = avg_frame_rate;
1583 as->ambiguous_frame_rate = 1;
1586 if (st->codecpar->width > as->max_width)
1587 as->max_width = st->codecpar->width;
1588 if (st->codecpar->height > as->max_height)
1589 as->max_height = st->codecpar->height;
1591 if (st->sample_aspect_ratio.num)
1592 os->sar = st->sample_aspect_ratio;
1594 os->sar = (AVRational){1,1};
1595 av_reduce(&par.num, &par.den,
1596 st->codecpar->width * (int64_t)os->sar.num,
1597 st->codecpar->height * (int64_t)os->sar.den,
1600 if (as->par.num && av_cmp_q(par, as->par)) {
1601 av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
1602 return AVERROR(EINVAL);
1609 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1610 sizeof(os->codec_str));
1611 os->first_pts = AV_NOPTS_VALUE;
1612 os->max_pts = AV_NOPTS_VALUE;
1613 os->last_dts = AV_NOPTS_VALUE;
1614 os->segment_index = 1;
1616 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1617 c->nr_of_streams_to_flush++;
1620 if (!c->has_video && c->seg_duration <= 0) {
1621 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1622 return AVERROR(EINVAL);
1624 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1625 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1627 c->nr_of_streams_flushed = 0;
1628 c->target_latency_refid = -1;
1633 static int dash_write_header(AVFormatContext *s)
1635 DASHContext *c = s->priv_data;
1637 for (i = 0; i < s->nb_streams; i++) {
1638 OutputStream *os = &c->streams[i];
1639 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1642 // Flush init segment
1643 // Only for WebM segment, since for mp4 delay_moov is set and
1644 // the init segment is thus flushed after the first packets.
1645 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1646 (ret = flush_init_segment(s, os)) < 0)
1652 static int add_segment(OutputStream *os, const char *file,
1653 int64_t time, int64_t duration,
1654 int64_t start_pos, int64_t range_length,
1655 int64_t index_length, int next_exp_index)
1659 if (os->nb_segments >= os->segments_size) {
1660 os->segments_size = (os->segments_size + 1) * 2;
1661 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1662 os->segments_size)) < 0) {
1663 os->segments_size = 0;
1664 os->nb_segments = 0;
1668 seg = av_mallocz(sizeof(*seg));
1670 return AVERROR(ENOMEM);
1671 av_strlcpy(seg->file, file, sizeof(seg->file));
1673 seg->duration = duration;
1674 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1675 seg->duration += seg->time;
1678 seg->start_pos = start_pos;
1679 seg->range_length = range_length;
1680 seg->index_length = index_length;
1681 os->segments[os->nb_segments++] = seg;
1682 os->segment_index++;
1683 //correcting the segment index if it has fallen behind the expected value
1684 if (os->segment_index < next_exp_index) {
1685 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1686 file, os->segment_index, next_exp_index);
1687 os->segment_index = next_exp_index;
1692 static void write_styp(AVIOContext *pb)
1695 ffio_wfourcc(pb, "styp");
1696 ffio_wfourcc(pb, "msdh");
1697 avio_wb32(pb, 0); /* minor */
1698 ffio_wfourcc(pb, "msdh");
1699 ffio_wfourcc(pb, "msix");
1702 static void find_index_range(AVFormatContext *s, const char *full_path,
1703 int64_t pos, int *index_length)
1709 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1712 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1713 ff_format_io_close(s, &pb);
1716 ret = avio_read(pb, buf, 8);
1717 ff_format_io_close(s, &pb);
1720 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1722 *index_length = AV_RB32(&buf[0]);
1725 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1726 AVPacket *pkt, AVRational *frame_rate)
1728 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1730 int ret, extradata_size;
1732 if (par->extradata_size)
1735 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1736 if (!extradata_size)
1739 ret = ff_alloc_extradata(par, extradata_size);
1743 memcpy(par->extradata, extradata, extradata_size);
1745 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1750 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1751 DASHContext *c = s->priv_data;
1752 int http_base_proto = ff_is_http_proto(filename);
1754 if (http_base_proto) {
1755 AVIOContext *out = NULL;
1756 AVDictionary *http_opts = NULL;
1758 set_http_options(&http_opts, c);
1759 av_dict_set(&http_opts, "method", "DELETE", 0);
1761 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1762 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1765 av_dict_free(&http_opts);
1766 ff_format_io_close(s, &out);
1768 int res = avpriv_io_delete(filename);
1770 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1771 av_strerror(res, errbuf, sizeof(errbuf));
1772 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1777 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1779 DASHContext *c = s->priv_data;
1780 size_t dirname_len, file_len;
1781 char filename[1024];
1783 dirname_len = strlen(c->dirname);
1784 if (dirname_len >= sizeof(filename)) {
1785 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1786 (uint64_t)dirname_len, c->dirname);
1787 return AVERROR(ENAMETOOLONG);
1790 memcpy(filename, c->dirname, dirname_len);
1792 file_len = strlen(file);
1793 if ((dirname_len + file_len) >= sizeof(filename)) {
1794 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1795 (uint64_t)(dirname_len + file_len), c->dirname, file);
1796 return AVERROR(ENAMETOOLONG);
1799 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1800 dashenc_delete_file(s, filename);
1805 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1807 for (int i = 0; i < remove_count; ++i) {
1808 dashenc_delete_segment_file(s, os->segments[i]->file);
1810 // Delete the segment regardless of whether the file was successfully deleted
1811 av_free(os->segments[i]);
1814 os->nb_segments -= remove_count;
1815 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1818 static int dash_flush(AVFormatContext *s, int final, int stream)
1820 DASHContext *c = s->priv_data;
1823 const char *proto = avio_find_protocol_name(s->url);
1824 int use_rename = proto && !strcmp(proto, "file");
1826 int cur_flush_segment_index = 0, next_exp_index = -1;
1828 cur_flush_segment_index = c->streams[stream].segment_index;
1830 //finding the next segment's expected index, based on the current pts value
1831 if (c->use_template && !c->use_timeline && c->index_correction &&
1832 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1833 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1834 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1835 c->streams[stream].first_pts,
1836 s->streams[stream]->time_base,
1838 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1842 for (i = 0; i < s->nb_streams; i++) {
1843 OutputStream *os = &c->streams[i];
1844 AVStream *st = s->streams[i];
1845 int range_length, index_length = 0;
1847 if (!os->packets_written)
1850 // Flush the single stream that got a keyframe right now.
1851 // Flush all audio streams as well, in sync with video keyframes,
1852 // but not the other video streams.
1853 if (stream >= 0 && i != stream) {
1854 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1855 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1857 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1859 // Make sure we don't flush audio streams multiple times, when
1860 // all video streams are flushed one at a time.
1861 if (c->has_video && os->segment_index > cur_flush_segment_index)
1865 if (!c->single_file) {
1866 if (os->segment_type == SEGMENT_TYPE_MP4 && !os->written_len)
1867 write_styp(os->ctx->pb);
1869 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1872 ret = flush_dynbuf(c, os, &range_length);
1875 os->packets_written = 0;
1877 if (c->single_file) {
1878 find_index_range(s, os->full_path, os->pos, &index_length);
1880 dashenc_io_close(s, &os->out, os->temp_path);
1883 ret = ff_rename(os->temp_path, os->full_path, os->ctx);
1889 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1893 if (!os->muxer_overhead && os->max_pts > os->start_pts)
1894 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1896 av_rescale_q(os->max_pts - os->start_pts,
1897 st->time_base, AV_TIME_BASE_Q);
1898 os->total_pkt_size = 0;
1899 os->total_pkt_duration = 0;
1901 if (!os->bit_rate) {
1902 // calculate average bitrate of first segment
1903 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1907 os->bit_rate = bitrate;
1909 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1910 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1912 os->pos += range_length;
1915 if (c->window_size) {
1916 for (i = 0; i < s->nb_streams; i++) {
1917 OutputStream *os = &c->streams[i];
1918 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1919 if (remove_count > 0)
1920 dashenc_delete_media_segments(s, os, remove_count);
1925 for (i = 0; i < s->nb_streams; i++) {
1926 OutputStream *os = &c->streams[i];
1927 if (os->ctx && os->ctx_inited) {
1928 int64_t file_size = avio_tell(os->ctx->pb);
1929 av_write_trailer(os->ctx);
1930 if (c->global_sidx) {
1931 int j, start_index, start_number;
1932 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1933 get_start_index_number(os, c, &start_index, &start_number);
1934 if (start_index >= os->nb_segments ||
1935 os->segment_type != SEGMENT_TYPE_MP4)
1937 os->init_range_length += sidx_size;
1938 for (j = start_index; j < os->nb_segments; j++) {
1939 Segment *seg = os->segments[j];
1940 seg->start_pos += sidx_size;
1948 if (c->has_video && !final) {
1949 c->nr_of_streams_flushed++;
1950 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1953 c->nr_of_streams_flushed = 0;
1955 ret = write_manifest(s, final);
1960 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
1962 DASHContext *c = s->priv_data;
1963 AVStream *st = s->streams[pkt->stream_index];
1964 OutputStream *os = &c->streams[pkt->stream_index];
1965 AdaptationSet *as = &c->as[os->as_idx - 1];
1966 int64_t seg_end_duration, elapsed_duration;
1969 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
1973 // Fill in a heuristic guess of the packet duration, if none is available.
1974 // The mp4 muxer will do something similar (for the last packet in a fragment)
1975 // if nothing is set (setting it for the other packets doesn't hurt).
1976 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
1977 // invoke its heuristic (this doesn't have to be identical to that algorithm),
1978 // so that we know the exact timestamps of fragments.
1979 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
1980 pkt->duration = pkt->dts - os->last_dts;
1981 os->last_dts = pkt->dts;
1983 // If forcing the stream to start at 0, the mp4 muxer will set the start
1984 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
1985 if (os->first_pts == AV_NOPTS_VALUE &&
1986 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
1987 pkt->pts -= pkt->dts;
1991 if (os->first_pts == AV_NOPTS_VALUE) {
1993 AVProducerReferenceTime *prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT,
1995 if (prft && side_data_size == sizeof(AVProducerReferenceTime) && !prft->flags) {
1996 os->producer_reference_time = prft->wallclock;
1997 if (c->target_latency_refid < 0)
1998 c->target_latency_refid = pkt->stream_index;
2000 os->first_pts = pkt->pts;
2002 os->last_pts = pkt->pts;
2004 if (!c->availability_start_time[0]) {
2005 int64_t start_time_us = av_gettime();
2006 c->start_time_s = start_time_us / 1000000;
2007 format_date(c->availability_start_time,
2008 sizeof(c->availability_start_time), start_time_us);
2011 if (!os->packets_written)
2012 os->availability_time_offset = 0;
2014 if (!os->availability_time_offset &&
2015 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
2016 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
2017 int64_t frame_duration = 0;
2019 switch (os->frag_type) {
2020 case FRAG_TYPE_DURATION:
2021 frame_duration = os->frag_duration;
2023 case FRAG_TYPE_EVERY_FRAME:
2024 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
2028 os->availability_time_offset = ((double) os->seg_duration -
2029 frame_duration) / AV_TIME_BASE;
2030 as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
2033 if (c->use_template && !c->use_timeline) {
2034 elapsed_duration = pkt->pts - os->first_pts;
2035 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
2037 elapsed_duration = pkt->pts - os->start_pts;
2038 seg_end_duration = os->seg_duration;
2041 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
2042 av_compare_ts(elapsed_duration, st->time_base,
2043 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
2044 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2045 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
2048 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
2052 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
2053 if (c->last_duration < os->last_duration*9/10 ||
2054 c->last_duration > os->last_duration*11/10) {
2055 av_log(s, AV_LOG_WARNING,
2056 "Segment durations differ too much, enable use_timeline "
2057 "and use_template, or keep a stricter keyframe interval\n");
2062 if (c->write_prft && os->producer_reference_time && !os->producer_reference_time_str[0])
2063 format_date(os->producer_reference_time_str,
2064 sizeof(os->producer_reference_time_str),
2065 os->producer_reference_time);
2067 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
2071 if (!os->packets_written) {
2072 // If we wrote a previous segment, adjust the start time of the segment
2073 // to the end of the previous one (which is the same as the mp4 muxer
2074 // does). This avoids gaps in the timeline.
2075 if (os->max_pts != AV_NOPTS_VALUE)
2076 os->start_pts = os->max_pts;
2078 os->start_pts = pkt->pts;
2080 if (os->max_pts == AV_NOPTS_VALUE)
2081 os->max_pts = pkt->pts + pkt->duration;
2083 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
2085 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2086 os->frag_type == FRAG_TYPE_PFRAMES &&
2087 os->packets_written) {
2091 av_assert0(os->parser);
2092 av_parser_parse2(os->parser, os->parser_avctx,
2093 &data, &size, pkt->data, pkt->size,
2094 pkt->pts, pkt->dts, pkt->pos);
2096 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
2097 st->codecpar->video_delay &&
2098 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
2099 pkt->flags & AV_PKT_FLAG_KEY) {
2100 ret = av_write_frame(os->ctx, NULL);
2104 if (!os->availability_time_offset) {
2105 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
2107 os->availability_time_offset = ((double) os->seg_duration -
2108 frag_duration) / AV_TIME_BASE;
2109 as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
2114 if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size) {
2115 os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
2116 c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
2119 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
2122 os->packets_written++;
2123 os->total_pkt_size += pkt->size;
2124 os->total_pkt_duration += pkt->duration;
2125 os->last_flags = pkt->flags;
2127 if (!os->init_range_length)
2128 flush_init_segment(s, os);
2130 //open the output context when the first frame of a segment is ready
2131 if (!c->single_file && os->packets_written == 1) {
2132 AVDictionary *opts = NULL;
2133 const char *proto = avio_find_protocol_name(s->url);
2134 int use_rename = proto && !strcmp(proto, "file");
2135 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2136 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2137 os->media_seg_name, pkt->stream_index,
2138 os->segment_index, os->bit_rate, os->start_pts);
2139 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2141 snprintf(os->temp_path, sizeof(os->temp_path),
2142 use_rename ? "%s.tmp" : "%s", os->full_path);
2143 set_http_options(&opts, c);
2144 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2145 av_dict_free(&opts);
2147 return handle_io_open_error(s, ret, os->temp_path);
2150 char *prefetch_url = use_rename ? NULL : os->filename;
2151 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2155 //write out the data immediately in streaming mode
2156 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2158 uint8_t *buf = NULL;
2159 if (!os->written_len)
2160 write_styp(os->ctx->pb);
2161 avio_flush(os->ctx->pb);
2162 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2164 avio_write(os->out, buf + os->written_len, len - os->written_len);
2165 avio_flush(os->out);
2167 os->written_len = len;
2173 static int dash_write_trailer(AVFormatContext *s)
2175 DASHContext *c = s->priv_data;
2178 if (s->nb_streams > 0) {
2179 OutputStream *os = &c->streams[0];
2180 // If no segments have been written so far, try to do a crude
2181 // guess of the segment duration
2182 if (!c->last_duration)
2183 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2184 s->streams[0]->time_base,
2186 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2187 s->streams[0]->time_base,
2190 dash_flush(s, 1, -1);
2192 if (c->remove_at_exit) {
2193 for (i = 0; i < s->nb_streams; ++i) {
2194 OutputStream *os = &c->streams[i];
2195 dashenc_delete_media_segments(s, os, os->nb_segments);
2196 dashenc_delete_segment_file(s, os->initfile);
2197 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2198 char filename[1024];
2199 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2200 dashenc_delete_file(s, filename);
2203 dashenc_delete_file(s, s->url);
2205 if (c->hls_playlist && c->master_playlist_created) {
2206 char filename[1024];
2207 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2208 dashenc_delete_file(s, filename);
2215 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2217 DASHContext *c = s->priv_data;
2218 OutputStream *os = &c->streams[avpkt->stream_index];
2219 AVFormatContext *oc = os->ctx;
2220 if (oc->oformat->check_bitstream) {
2222 AVPacket pkt = *avpkt;
2223 pkt.stream_index = 0;
2224 ret = oc->oformat->check_bitstream(oc, &pkt);
2226 AVStream *st = s->streams[avpkt->stream_index];
2227 AVStream *ost = oc->streams[0];
2228 st->internal->bsfcs = ost->internal->bsfcs;
2229 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2230 ost->internal->bsfcs = NULL;
2231 ost->internal->nb_bsfcs = 0;
2238 #define OFFSET(x) offsetof(DASHContext, x)
2239 #define E AV_OPT_FLAG_ENCODING_PARAM
2240 static const AVOption options[] = {
2241 { "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 },
2242 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2243 { "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 },
2244 #if FF_API_DASH_MIN_SEG_DURATION
2245 { "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 },
2247 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2248 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2249 { "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"},
2250 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2251 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2252 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2253 { "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"},
2254 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2255 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2256 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2257 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2258 { "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 },
2259 { "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 },
2260 { "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 },
2261 { "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 },
2262 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2263 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2264 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2265 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2266 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2267 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2268 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2269 { "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},
2270 { "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 },
2271 { "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"},
2272 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2273 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2274 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2275 { "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 },
2276 { "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 },
2277 { "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2278 { "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},
2279 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2280 { "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"},
2281 { "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"},
2282 { "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
2283 { "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
2284 { "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2288 static const AVClass dash_class = {
2289 .class_name = "dash muxer",
2290 .item_name = av_default_item_name,
2292 .version = LIBAVUTIL_VERSION_INT,
2295 AVOutputFormat ff_dash_muxer = {
2297 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2298 .extensions = "mpd",
2299 .priv_data_size = sizeof(DASHContext),
2300 .audio_codec = AV_CODEC_ID_AAC,
2301 .video_codec = AV_CODEC_ID_H264,
2302 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2304 .write_header = dash_write_header,
2305 .write_packet = dash_write_packet,
2306 .write_trailer = dash_write_trailer,
2307 .deinit = dash_free,
2308 .check_bitstream = dash_check_bitstream,
2309 .priv_class = &dash_class,