ffmpeg将.avi，.mp4，.mp3，.flv，.mkv转换为mp4

Question

I searching for a script that contains all of that attributes like the title.

I have done one simple but that is only for one attribute so far and i do not want one script for each of all attributes to not be confused.

Like this, running the script for like 10 minutes to see if there is any file that consist .flv and the automatic doing a convert for the file to a mp4 attribute.

#!/bin/bash
# Convert all flv to mp4
ext=.mp4
for file in *.flv; do
currmov=$file$ext
ffmpeg -r 15  -i $file  -b 296k -s 640x320 -vcodec mpeg4 -acodec aac $currmov
done

Thanks for help! /M

Answer 1

For all extensions:

for file in *.{flv,avi,mp3,mkv}; do
        target="${file%.*}.mp4"
        [[ -f "$target" ]] && { echo "skipping $file - $target exists" ; continue; }
        echo ffmpeg -r 15  -i "$file"  -b 296k -s 640x320 -vcodec mpeg4 -acodec aac "$target"
done

remove the echo before ffmpeg if satisfied

Answer 2

You just need a second loop

for ext in avi mp3 flv mk4; do
    for file in *.$ext; do
        ...
    done
done