int64_t start_pos;
int range_length, index_length;
int64_t time;
+ double prog_date_time;
int64_t duration;
int n;
} Segment;
int64_t last_duration;
int64_t total_duration;
char availability_start_time[100];
+ time_t start_time_s;
char dirname[1024];
const char *single_file_name; /* file names as specified in options */
const char *init_seg_name;
int64_t timeout;
int index_correction;
char *format_options_str;
+ int global_sidx;
SegmentType segment_type_option; /* segment type as specified in options */
int ignore_io_errors;
int lhls;
+ int master_publish_rate;
+ int nr_of_streams_to_flush;
+ int nr_of_streams_flushed;
} DASHContext;
static struct codec_string {
}
}
-static int flush_dynbuf(OutputStream *os, int *range_length)
+static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
{
uint8_t *buffer;
av_write_frame(os->ctx, NULL);
avio_flush(os->ctx->pb);
- // write out to file
- *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
- os->ctx->pb = NULL;
- if (os->out)
- avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
- os->written_len = 0;
- av_free(buffer);
-
- // re-open buffer
- return avio_open_dyn_buf(&os->ctx->pb);
+ if (!c->single_file) {
+ // write out to file
+ *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
+ os->ctx->pb = NULL;
+ if (os->out)
+ avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
+ os->written_len = 0;
+ av_free(buffer);
+
+ // re-open buffer
+ return avio_open_dyn_buf(&os->ctx->pb);
+ } else {
+ *range_length = avio_tell(os->ctx->pb) - os->pos;
+ return 0;
+ }
}
static void set_http_options(AVDictionary **options, DASHContext *c)
const char *proto = avio_find_protocol_name(c->dirname);
int use_rename = proto && !strcmp(proto, "file");
int i, start_index, start_number;
+ double prog_date_time = 0;
get_start_index_number(os, c, &start_index, &start_number);
}
ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
- start_number, PLAYLIST_TYPE_NONE);
+ start_number, PLAYLIST_TYPE_NONE, 0);
ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
os->init_range_length, os->init_start_pos);
for (i = start_index; i < os->nb_segments; i++) {
Segment *seg = os->segments[i];
+
+ if (prog_date_time == 0) {
+ if (os->nb_segments == 1)
+ prog_date_time = c->start_time_s;
+ else
+ prog_date_time = seg->prog_date_time;
+ }
+ seg->prog_date_time = prog_date_time;
+
ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
(double) seg->duration / timescale, 0,
seg->range_length, seg->start_pos, NULL,
c->single_file ? os->initfile : seg->file,
- NULL);
+ &prog_date_time, 0, 0, 0);
if (ret < 0) {
av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
}
DASHContext *c = s->priv_data;
int ret, range_length;
- ret = flush_dynbuf(os, &range_length);
+ ret = flush_dynbuf(c, os, &range_length);
if (ret < 0)
return ret;
return;
for (i = 0; i < s->nb_streams; i++) {
OutputStream *os = &c->streams[i];
- if (os->ctx && os->ctx->pb)
- ffio_free_dyn_buf(&os->ctx->pb);
+ if (os->ctx && os->ctx->pb) {
+ if (!c->single_file)
+ ffio_free_dyn_buf(&os->ctx->pb);
+ else
+ avio_close(os->ctx->pb);
+ }
ff_format_io_close(s, &os->out);
if (os->ctx)
avformat_free_context(os->ctx);
return ret;
}
- if (c->hls_playlist && !c->master_playlist_created) {
+ if (c->hls_playlist) {
char filename_hls[1024];
const char *audio_group = "A1";
char audio_codec_str[128] = "\0";
int is_default = 1;
int max_audio_bitrate = 0;
+ // Publish master playlist only the configured rate
+ if (c->master_playlist_created && (!c->master_publish_rate ||
+ c->streams[0].segment_index % c->master_publish_rate))
+ return 0;
+
if (*c->dirname)
snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
else
char *ptr;
char basename[1024];
+ c->nr_of_streams_to_flush = 0;
if (c->single_file_name)
c->single_file = 1;
if (c->single_file)
c->lhls = 0;
}
+ if (c->global_sidx && !c->single_file) {
+ av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
+ c->global_sidx = 0;
+ }
+
+ if (c->global_sidx && c->streaming) {
+ av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
+ c->global_sidx = 0;
+ }
+
av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
ptr = strrchr(c->dirname, '/');
if (ptr) {
"Override -init_seg_name and/or -media_seg_name and/or "
"-single_file_name to end with the extension .webm\n");
}
+ if (c->streaming) {
+ // Streaming not supported as matroskaenc buffers internally before writing the output
+ av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
+ c->streaming = 0;
+ }
}
ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
ctx->avoid_negative_ts = s->avoid_negative_ts;
ctx->flags = s->flags;
- if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
- return ret;
-
if (c->single_file) {
if (os->single_file_name)
ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
}
snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
set_http_options(&opts, c);
- ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
+ if (!c->single_file) {
+ if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
+ return ret;
+ ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
+ } else {
+ ctx->url = av_strdup(filename);
+ ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
+ }
av_dict_free(&opts);
if (ret < 0)
return ret;
if (os->segment_type == SEGMENT_TYPE_MP4) {
if (c->streaming)
+ // frag_every_frame : Allows lower latency streaming
+ // skip_sidx : Reduce bitrate overhead
+ // skip_trailer : Avoids growing memory usage with time
av_dict_set(&opts, "movflags", "frag_every_frame+dash+delay_moov+skip_sidx+skip_trailer", 0);
- else
- av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov", 0);
+ else {
+ if (c->global_sidx)
+ av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov+global_sidx+skip_trailer", 0);
+ else
+ av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov+skip_trailer", 0);
+ }
} else {
av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
os->max_pts = AV_NOPTS_VALUE;
os->last_dts = AV_NOPTS_VALUE;
os->segment_index = 1;
+
+ if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
+ c->nr_of_streams_to_flush++;
}
if (!c->has_video && c->seg_duration <= 0) {
av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
return AVERROR(EINVAL);
}
+
+ c->nr_of_streams_flushed = 0;
+
return 0;
}
snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
}
- ret = flush_dynbuf(os, &range_length);
+ ret = flush_dynbuf(c, os, &range_length);
if (ret < 0)
break;
os->packets_written = 0;
}
}
- if (ret >= 0)
+ if (final) {
+ for (i = 0; i < s->nb_streams; i++) {
+ OutputStream *os = &c->streams[i];
+ if (os->ctx && os->ctx_inited) {
+ int64_t file_size = avio_tell(os->ctx->pb);
+ av_write_trailer(os->ctx);
+ if (c->global_sidx) {
+ int j, start_index, start_number;
+ int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
+ get_start_index_number(os, c, &start_index, &start_number);
+ if (start_index >= os->nb_segments ||
+ os->segment_type != SEGMENT_TYPE_MP4)
+ continue;
+ os->init_range_length += sidx_size;
+ for (j = start_index; j < os->nb_segments; j++) {
+ Segment *seg = os->segments[j];
+ seg->start_pos += sidx_size;
+ }
+ }
+
+ }
+ }
+ }
+ if (ret >= 0) {
+ if (c->has_video && !final) {
+ c->nr_of_streams_flushed++;
+ if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
+ return ret;
+
+ c->nr_of_streams_flushed = 0;
+ }
ret = write_manifest(s, final);
+ }
return ret;
}
os->first_pts = pkt->pts;
os->last_pts = pkt->pts;
- if (!c->availability_start_time[0])
+ if (!c->availability_start_time[0]) {
+ int64_t start_time_us = av_gettime();
+ c->start_time_s = start_time_us / 1000000;
format_date_now(c->availability_start_time,
sizeof(c->availability_start_time));
+ }
if (!os->availability_time_offset && pkt->duration) {
int64_t frame_duration = av_rescale_q(pkt->duration, st->time_base,
}
dash_flush(s, 1, -1);
- for (i = 0; i < s->nb_streams; ++i) {
- OutputStream *os = &c->streams[i];
- if (os->ctx && os->ctx_inited) {
- av_write_trailer(os->ctx);
- }
-
- if (c->remove_at_exit) {
+ if (c->remove_at_exit) {
+ for (i = 0; i < s->nb_streams; ++i) {
+ OutputStream *os = &c->streams[i];
dashenc_delete_media_segments(s, os, os->nb_segments);
dashenc_delete_segment_file(s, os->initfile);
+ if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
+ char filename[1024];
+ get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
+ dashenc_delete_file(s, filename);
+ }
}
- }
-
- if (c->remove_at_exit) {
dashenc_delete_file(s, s->url);
if (c->hls_playlist && c->master_playlist_created) {
char filename[1024];
- for (i = 0; i < s->nb_streams; ++i) {
- OutputStream *os = &c->streams[i];
- if (os->segment_type == SEGMENT_TYPE_MP4) {
- get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
- dashenc_delete_file(s, filename);
- }
- }
snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
dashenc_delete_file(s, filename);
}
{ "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
{ "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
{ "format_options","set list of options for the container format (mp4/webm) used for dash", OFFSET(format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
+ { "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 },
{ "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"},
{ "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
{ "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
{ "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
{ "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 },
{ "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 },
+ { "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},
{ NULL },
};
projects / ffmpeg / blobdiff