[FFmpeg-user] mkv to wav conversion out of sync

[Cliff R Wong]

This no longer seems to be a problem. Sorry for not mentioning it earlier.
Thanks for your response.

Cliff

On Mon, Jul 7, 2014 at 6:05 AM, Tom Evans <tevans.uk at googlemail.com> wrote:

> On Sat, Jul 5, 2014 at 7:33 PM, Cliff R Wong <cliff.r.wong at gmail.com>
> wrote:
> > Dear All,
> >
> > I am using ffmpeg to extract the audio from an mkv file to wav with the
> > following command:
> >
> > ffmpeg -i [input.mkv] -ar 8000 -ac 1 output.wav
> >
> > However, there is a roughly one second delay in the audio of the input
> mkv
> > file and the output wav file. This is not a problem for avi and mp4
> files.
> > I have also observed this using the VLC converter. Getting the sync is
> very
> > important for my application. Does anybody have any idea how to fix this?
> > Or if you know the exact time delay, that would be great too. Thanks
> ahead
> > for your help.
> >
> > Cliff
>
> You're extracting an audio only track, so I'm curious, what is the
> audio out of sync with?
>
> Cheers
>
> Tom
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