I do batch file flattening (there are 30 .mp3 files and one input.mp4 file in one folder):
FOR %%f IN (*.mp3) DO ffmpeg.exe -i "%%f" -i "input.mp4" -acodec copy -vcodec copy "%%~nf.mp4" how to make ffmpeg delete all audio files after batch processing ... tried to write to the batch file: del FOR %% f IN (* .mp3) ffmpeg does not see them ...