[SOLVED] ffmpeg convert MKV to MP4 with silent audio track

mackowiakp · 05-13-2017, 10:30 AM

I collect video clips from surveillance system. Such clip is in MKV format but IP cameras are not equipped with microphone so strange noise is recorded too. I want to remove original audio track, replacing it by totally silent track (aac, mp4a).
My current ffmpeg command looks like this:

Code:

ffmpeg -loglevel error -i $i -y -vcodec copy -acodec copy $i.mp4

$i - name of file

How can I modify the command above to temove unwanted noise ?

seasons · 05-13-2017, 12:07 PM

https://trac.ffmpeg.org/wiki/Null#anullsrc

KennyIRC · 05-13-2017, 04:28 PM

Code:

ffmpeg -loglevel error -i $i -y -vcodec copy -an $i.mp4

use -an it means audio none