Scaling a Video with FFmpeg
From the pile Simple Things That I Keep on Forgetting, today we have:
Scaling down a video with ffmpeg while preserving the aspect ratio.
$ ffmpeg ... -vf "scale=w=min(iw\,1280):h=-2" ...
"h=-2"
maintains the aspect ratio, using only even numbers.
Source
- http://www.ffmpeg-archive.org/Scale-down-if-resolution-is-greater-than-given-td4671640.html (removed)