ffmpeg file trimming
From thelinuxwiki
trim an mp3 file
Example: trim time before 10 seconds and after 10+40=50 seconds, keeping the time in between:
ffmpeg -i input_file.mp3 -c copy -ss 00:00:10 -t 00:00:40 output_filename.mp3
trim a video file
ffmpeg -i videoin.mp4 -c:v libx264 -ss 00:00:10 -t 00:00:40 videoout.mp4
used libx264 to avoid "deadlock buffer" issue on playback due to ffmpeg bug (version 5.1.4)
