[FFmpeg-user] distorted audio in concatenated mkv

[Paul B Mahol]

On Mon, Sep 6, 2021 at 9:37 PM lejeczek via ffmpeg-user <
ffmpeg-user at ffmpeg.org> wrote:

>
>
> On 06/09/2021 20:11, Paul B Mahol wrote:
> >
> >
> > On Mon, Sep 6, 2021 at 9:05 PM lejeczek via ffmpeg-user
> > <ffmpeg-user at ffmpeg.org <mailto:ffmpeg-user at ffmpeg.org>>
> > wrote:
> >
> >     Hi guys.
> >
> >     I have two mkv files which on their own playback fine but
> >     when I concatenate them then that second file's audio is
> >     pretty distorted.
> >     In case it might matter, I see as 'concat' works:
> >     ...
> >     [matroska @ 0x558ab61d6180] Non-monotonous DTS in output
> >     stream 0:1; previous: 986790, current: 986784;
> >     changing to
> >     986790. This may result in incorrect timestamps in the
> >     output file.
> >     ...
> >
> >
> > Most important information is not provided.
> > Audio codec used.
> default by ffmpeg - vorbis.
> Also, I do not copy in 'concat' but re-encode.
> thanks, L
>

If you use concat demuxer, perhaps try with concat filter instead.
It shouldnt matter as you transcode anyway.

>
> >
> >     Is there a way to fix this weird problem?
> >     many thanks, L.
> >     _______________________________________________
> >     ffmpeg-user mailing list
> >     ffmpeg-user at ffmpeg.org <mailto:ffmpeg-user at ffmpeg.org>
> >     https://ffmpeg.org/mailman/listinfo/ffmpeg-user
> >     <https://ffmpeg.org/mailman/listinfo/ffmpeg-user>
> >
> >     To unsubscribe, visit link above, or email
> >     ffmpeg-user-request at ffmpeg.org
> >     <mailto:ffmpeg-user-request at ffmpeg.org> with subject
> >     "unsubscribe".
> >
>
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
>