[FFmpeg-user] Possible to change pitch of audio in a downloaded mp4 file?

[Michael Koch]

Am 28.04.2021 um 08:51 schrieb Bo Berglund:
> Sometimes when I download a video it turns out to have some issues that has
> raised the audio pitch of the video making it not so enjoyable to watch/hear.
> So I wonder if there is an ffmpeg command that can modify the pitch of the audio
> without changing the playback speed or lipsync?

Yes, this is possible with a combination of asetrate, atempo and 
aresample filters.
See chapter 3.4 in my book:
http://www.astro-electronic.de/FFmpeg_Book.pdf

Michael