diff options
| -rw-r--r-- | fftools/ffmpeg.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c index 46bb014de8..8e6206647f 100644 --- a/fftools/ffmpeg.c +++ b/fftools/ffmpeg.c @@ -3151,8 +3151,12 @@ static int init_output_stream_streamcopy(OutputStream *ost) return ret; // copy timebase while removing common factors - if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0) - ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1}); + if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0) { + if (ost->frame_rate.num) + ost->st->time_base = av_inv_q(ost->frame_rate); + else + ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1}); + } // copy estimated duration as a hint to the muxer if (ost->st->duration <= 0 && ist->st->duration > 0) |