For example the construct:

if (A AND B) then C
For example the construct:

if (A AND B) then C
For example the construct:

if (A AND B) then C
For example the construct:

if (A AND B) then C
The filter also exports the frame metadata lavfi.color_quant_ratio (nb_color_in / nb_color_out) which you can use to evaluate the degree of color quantization of the palette. This information is also visible at info logging level.

ffmpeg -i input.mkv -vf palettegen palette.png
To record from the framebuffer device /dev/fb0 with ffmpeg:

ffmpeg -f fbdev -framerate 10 -i /dev/fb0 out.avi
Set mono or out of phase duration until notification, expressed in seconds. Default is 2.

ffmpeg -i stereo.wav -af aphasemeter=video=0:phasing=1:duration=1:tolerance=0.001 -f null -
For the alpha plane, a 3x3 box radius will be run 7 times.

-i INPUT -vf "hwupload, boxblur_opencl=2:1:4:5:3:7, hwdownload" OUTPUT

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