FFMPEG cheat sheet

ffmpeg.sh

# Convert MP4 to 1080p
# source: http://askubuntu.com/a/353282
ffmpeg -i {{input.mp4}}  -strict -2 -codec:v libx264 -crf 12 -preset medium -movflags faststart -vf scale=-1:1080,format=yuv420p {{output.mp4}}
# better compression
ffmpeg -i {{input.mp4}}  -strict -2 -codec:v libx264 -crf 22.5 -movflags faststart -vf scale=-1:1080,format=yuv420p {{output.mp4}}

# split mp4 file
ffmpeg -i {{input.mp4}} -acodec copy -vcodec copy -ss 0 -t 00:00:00 {{output.mp4}}

# concat two mp4 files
cat 1.mp4 2.mp4 | ffmpeg -f concat -i - -c copy output



# convert ogv to mp4
ffmpeg -i {{input.ogv}} -vcodec libx264 {{output.mp4}}

# convert mp4 to ogv
ffmpeg -i {{input.mp4}} -codec:v libtheora -qscale:v 7 -codec:a libvorbis -qscale:a 5 {{output.ogv}}
# - better conversion
ffmpeg -i {{input.mp4}} -codec:v libtheora -crf 22.5 -movflags faststart -vf scale=-1:144 -codec:a libvorbis -qscale:a 5 {{output.ogv}}