[FFmpeg-user] pitch corecting audio?

Moritz Barsnick barsnick at gmx.net
Thu Mar 26 15:03:56 CET 2015

On Wed, Mar 25, 2015 at 20:20:04 -0700, James Heliker wrote:
> If I could access the original 23.976 source audio and apply "-af 
> atempo=25*1001/24000", would that accomplish the job without affecting 
> pitch in the first place?

Indeed it should!

You may or may not need to use the setpts filter if you use my first
example, see here:


(You can experiment and tell us your results.)

> Then I could merge the 25fps video with my correctly sped-up audio

Possibly with my mentioned caveat regarding the A/V sync.

Give it a try!

> Thanks for your help!

You're welcome,

More information about the ffmpeg-user mailing list