[FFmpeg-user] Convert PAL to NTSC

[Robert Krüger]

On Sat, Jul 13, 2013 at 2:34 AM, Phil Rhodes <phil_rhodes at rocketmail.com> wrote:
>> This results in a shorter playtime and an increase in the pitch
>> of the sound.
>
> The sound is invariably corrected these days; I'm not sure if ffmpeg has a suitable audio retiming engine.

the filter atempo does that and AFAICT it does a decent job from
listening to the output, although I have not tested this thoroughly in
comparison with accepted professional speed correction software.