Hi. I have an interesting case. I need to extract sound from multiple
input files, combine those video files into one, and then re-insert the
audio into the combined video file.
Unfortunately I need to do them in this order. Extract sounds, then
combine the input videos, then add sound back to the resulting video.
Can someone help me the first step?
I tried this:
$ ffmpeg -i resized/360_0233.MP4 -i resized/360_0234.MP4 -i
resized/360_0235.MP4 -vn -map 0:a tmpsound.mp3
but it only extracted the first file's audio.
Ideally I'd like to end up with 1 audio file for all these inputs. But
if that's not possible, multiple output files are OK, as long as I can
figure out how to insert them into the combined video afterwards :)
I'd appreciate any help.
-turgut
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