I'd like to ask if it's possible to make an exponential decay effect
with FFmpeg.
Let's assume a pixel is fashing to luminance = 1 in just one frame. Then
in the output video I'd like to have the pixel flashing to 1
immediately, followed by an exponential decay with a time constant of a
few seconds.
The mathematics would be something like this:
luminance = 0.95 * luminance_in_last_frame; // exponential decay
if (luminance_in_new_frame > luminance)
luminance = luminance_in_new_frame;
Is there any trick to do this with already existing video filters?
Thanks,
Michael
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