ffmpeg cheatsheet

December 14, 2017 - cheatsheet 

tags: ffmpeg 

I use cheatsheets to remember commands I use frequently.

Batch convert:

for i in *.avi; do ffmpeg -i "$i" "${i%.*}.mp4"; done

Convert formats:

ffmpeg -i input.mkv output.mp4

Extract audio:

ffmpeg -i input.mp4 -vn audio_only.m4a

Remove audio:

ffmpeg -i input.mp4 -c copy -an input-nosound.mp4

Be quiet:

ffmpeg -hide_banner -loglevel warning

Fire and forget (redirect stdin):

nohup ffmpeg ... </dev/null &

Find the size:

ffprobe -v error -show_entries stream=width,height \
	-select_streams v:0 -of json  input.mp4 \
	| jq '.streams[0]|.width,.height' | paste - -

Change size:

ffmpeg -i input.mp4 -s 1280x720 -c:a copy resized.mp4

Add postal image to audio:

ffmpeg -loop 1 -i inputimage.jpg -i inputaudio.mp3 -c:v libx264 -c:a aac -strict experimental -b:a 192k -shortest output.mp4

Join video files:

ffmpeg -f concat -i join.txt -c copy output.mp4

Extract a portion:

ffmpeg -ss 00:00:05 -i input.mp4 -t 00:00:03 -c:v copy -c:a copy excerpt.mp4

Trim a video:

ffmpeg -ss [start] -i in.mp4 -t [duration] -c copy out.mp4

Burn subtitles:

ffmpeg -i sub.srt sub.ass
ffmpeg -i in.mp4 -vf ass=sub.ass out.mp4

Rotate a video:

ffmpeg -i in.mov -vf "transpose=1" out.mov

0 = 90 CounterCLockwise and Vertical Flip (default)
1 = 90 Clockwise
2 = 90 CounterClockwise
3 = 90 Clockwise and Vertical Flip

Download transport stream:

ffmpeg -protocol_whitelist "file,http,https,tcp,tls" -i "path_to_playlist.m3u8" -c copy -bsf:a aac_adtstoasc out.mp4