Codec timebase is not well-defined for streamcopy, so it should only be
used as the last resort.
---
fftools/ffmpeg.c | 8 ++++++--
1 file 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)
--
2.30.2
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