[FFmpeg-devel] [PATCH] libavfilter/af_atempo: offset output frames' pts by first_frame_pts / tempo

[Paweł Wegner]

On Thu, Jan 24, 2019 at 4:01 PM Gyan <ffmpeg at gyani.pro> wrote:

>
>
> On 24-01-2019 08:18 PM, Paweł Wegner wrote:
> >
> > This fixes seeking when I have video playback sped up in ffplay like
> this:
> > ffplay -vf "setpts=0.5 * PTS" -af "atempo=2" input
>
> The better way to run this is
>
>      ffplay -vf "setpts=0.5 * (PTS - STARTPTS)" -af "atempo=2" input
>
This works fine, thanks; the patch can be discarded.

>
> Gyan
>
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