diff options
Diffstat (limited to 'fftools/ffmpeg_opt.c')
| -rw-r--r-- | fftools/ffmpeg_opt.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index eef325b478..840dc054e9 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -202,6 +202,31 @@ int parse_and_set_vsync(const char *arg, int *vsync_var, int file_idx, int st_id return 0; } +static void correct_input_start_times(void) +{ + // Correct starttime based on the enabled streams + for (int i = 0; i < nb_input_files; i++) { + InputFile *ifile = input_files[i]; + AVFormatContext *is = ifile->ctx; + int64_t new_start_time = INT64_MAX; + + if (is->start_time == AV_NOPTS_VALUE || + !(is->iformat->flags & AVFMT_TS_DISCONT)) + continue; + + for (int j = 0; j < is->nb_streams; j++) { + AVStream *st = is->streams[j]; + if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE) + continue; + new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q)); + } + if (new_start_time > is->start_time) { + av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time); + ifile->ts_offset = -new_start_time; + } + } +} + static int apply_sync_offsets(void) { for (int i = 0; i < nb_input_files; i++) { @@ -1268,6 +1293,8 @@ int ffmpeg_parse_options(int argc, char **argv) goto fail; } + correct_input_start_times(); + check_filter_outputs(); fail: |