Am 15.03.2020 um 11:13 schrieb Dan Bridges:
Is it possible to "remove" everything in a video except a specific
color (or maybe a range... ie close to a specific color. By "remove" I
mean covert every that is NOT the color(s) I want to black or
transparent. I have a video that contains a yellowish box that moves
about the screen. I want to isolate ONLY the yellowish box. Everything
else should become black or transparent.
Try the colorhold filter:
From http://paulbourke.net/miscellaneous/ffmpeg/FFmpeg_Book.pdf
You'd better use the original link to my book. Then you always get the
latest version:
http://www.astro-electronic.de/FFmpeg_Book.pdf
In this case the colorkey filter is the better solution, because the
original poster wanted the background black or transparent.
Michael
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