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| author | Jan Ekström <jan.ekstrom@24i.com> | 2022-07-22 13:57:54 +0300 |
|---|---|---|
| committer | Jan Ekström <jeebjp@gmail.com> | 2023-02-03 16:17:29 +0200 |
| commit | 9a820ec8b1e2323b70a1cebd204bf459bf7daa1a (patch) | |
| tree | d463a94f5b00866c8706ab67004ba45bd0cb7472 /fftools/ffmpeg_mux_init.c | |
| parent | 746d27455b00f6baca2a1e4ab206cd40bf187598 (diff) | |
| download | ffmpeg-9a820ec8b1e2323b70a1cebd204bf459bf7daa1a.tar.gz | |
ffmpeg: add video heartbeat capability to fix_sub_duration
Splits the currently handled subtitle at random access point
packets that can be configured to follow a specific output stream.
Currently only subtitle streams which are directly mapped into the
same output in which the heartbeat stream resides are affected.
This way the subtitle - which is known to be shown at this time
can be split and passed to muxer before its full duration is
yet known. This is also a drawback, as this essentially outputs
multiple subtitles from a single input subtitle that continues
over multiple random access points. Thus this feature should not
be utilized in cases where subtitle output latency does not matter.
Co-authored-by: Andrzej Nadachowski <andrzej.nadachowski@24i.com>
Co-authored-by: Bernard Boulay <bernard.boulay@24i.com>
Signed-off-by: Jan Ekström <jan.ekstrom@24i.com>
Diffstat (limited to 'fftools/ffmpeg_mux_init.c')
| -rw-r--r-- | fftools/ffmpeg_mux_init.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fftools/ffmpeg_mux_init.c b/fftools/ffmpeg_mux_init.c index f8ccf4a3e9..834cdbcc9f 100644 --- a/fftools/ffmpeg_mux_init.c +++ b/fftools/ffmpeg_mux_init.c @@ -61,6 +61,7 @@ static const char *const opt_name_enc_stats_pre_fmt[] = {"enc_stats_pre_ static const char *const opt_name_enc_stats_post_fmt[] = {"enc_stats_post_fmt", NULL}; static const char *const opt_name_filters[] = {"filter", "af", "vf", NULL}; static const char *const opt_name_filter_scripts[] = {"filter_script", NULL}; +static const char *const opt_name_fix_sub_duration_heartbeat[] = {"fix_sub_duration_heartbeat", NULL}; static const char *const opt_name_fps_mode[] = {"fps_mode", NULL}; static const char *const opt_name_force_fps[] = {"force_fps", NULL}; static const char *const opt_name_forced_key_frames[] = {"forced_key_frames", NULL}; @@ -614,6 +615,9 @@ static OutputStream *new_output_stream(Muxer *mux, const OptionsContext *o, MATCH_PER_STREAM_OPT(bits_per_raw_sample, i, ost->bits_per_raw_sample, oc, st); + MATCH_PER_STREAM_OPT(fix_sub_duration_heartbeat, i, ost->fix_sub_duration_heartbeat, + oc, st); + if (oc->oformat->flags & AVFMT_GLOBALHEADER && ost->enc_ctx) ost->enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER; |