- Increase/decrease audio tempo/speed this is represented as a percentage. ie: 1.5=1½× normal speed
atempo={0.5-100}
- Remove logo in bottom right-hand corner coordinates are measuring from top left corner of delogo region set
delogo=x=620:y=495:w=330:h=40
- Fade in/out video (fade out is dependent on number of frames)
fade=in:0:500,fade=out:21500:400
- Loop a stream N number of times (or infinitely if '-1')
-stream_loop -1 -i INPUT.EXT
this must go BEFORE the stream you want to loop
- Clip a video into segments quickly (bsf can be applied, but results are unreliable)
-i INPUT.EXT -segment_time <UNIX time, 00:00:00.00 or 00s> -f segment -reset_timestamps 1 OUTPUT_%03d.EXT
- Fade in/out audio (these durations are in seconds, not in frames like video)
-af afade=t=in:ss=<start-time>:d=<duration>,afade=t=out:st=<fade-start>:d=<fade-duration>
- Record monitor source audio in lossless format
-f pulse -i default OUTPUT.WAV
-i pulse -i default OUTPUT.OPUS for compressed
- Flip a video horizontally
-i INPUT.EXT -vf "hflip" OUTPUT.EXT
the following adds the complexity of only flipping from 10s-20s at beginning of video; can be useful for avoiding contentid scans
-i INPUT.EXT -vf "trim=start=10:end=20,hflip[flipped];[0:v][flipped]concat" -c:a copy OUTPUT.EXT
- count the number of video frames in a file quickly
mediainfo --Output="Video;%FrameCount%" INPUT.EXT
- Wipe all metadata from a media file. Use as an option to other ffmpeg command or by itself.
the following works unreliably to wipe all metadata, however; you may handle each field with its its own
-metadata FIELD=''option on the command line for a surefire wipe
-map_metadata 1