Reputation: 2315
I have a webm file with only the video track. I would like to know if is it possible to create a new file with an only muted audio track of the same duration as the video file. Let's say that we have a webm vp8 and I want to create another file with the same duration with a muted AAC track.
Upvotes: 0
Views: 530
Reputation: 92938
Yes, using pipes, like this.
ffmpeg -an -i in.webm -f lavfi -i anullsrc -c:v copy -c:a aac -shortest -fflags +shortest -max_interleave_delta 200M -f nut - | ffmpeg -f nut -i - -vn -c copy silent.m4a
Upvotes: 1