[FFmpeg-user] hue filter set brightness broken?
Karl Kiniger
karl.kiniger at med.ge.com
Mon Oct 13 15:01:06 CEST 2014
Dear list,
-vf hue=b=-10 does not result in black images depending
on colors.
Is this expected behavior?
I tried to use the hue filter in combo with sendcmd to
simulate fade in and out but failed miserably.
#!/bin/bash
a2z=($(echo {a..z}))
for i in $(seq -10 10);do
t=${a2z[$i+10]}
fn=$(printf "huetest-%c-%d.png" $t $i)
ffmpeg -f lavfi -i testsrc -an -vf hue=b=$i -frames 1 -y $fn
done
Karl
More information about the ffmpeg-user
mailing list