FFMPEG Stuff

ffmpeg_stuff.sh

# Boost volume of all videos in directory

# This ONLY works in BASH. (maybe others, but it does NOT work in Fish shell)
# This is meant to be done by first moving all the videos into a subdirectory
# Then the output files with boosted volume are dumped one directory up
for i in *.avi; do ffmpeg -i $i -vcodec copy -af "volume=10dB" ../$i; done

# ____________________________________________________________________________________

# Combine video from first video with audio from anthe second video.
# Youtube Karaoke times!
# To add a time offset to either one, adjust "-itoffset" 
ffmpeg -itsoffset 00:00:00.000 -i lyrics.mp4  -itsoffset 00:00:00.000 -i instrumental.mp4 -c copy -map 0:0 -map 1:1 -shortest KaraokeVideo.mp4