2019-04-28 18:25 GMT+02:00, Michael Koch <astroelectro...@t-online.de>: > >>> Feature request: >>> -- Decay filter, makes short flashes of light appear longer, with an >>> exponential decay curve. Like on an analog oscilloscope screen with long >>> persistence time. Could be used for videos of the night sky to make fast >>> meteors appear longer. Should work as follows: >>> For each pixel do: Multiply the RGB values from the previous output >>> frame with a decay constant in the range [0..1], for example 0.95. Use >>> these RGB values for the next output frame. But if the RGB value from >>> the next input frame is brigher than this, then use the brighter value. >> Implemented as lagfun filter. >> See ffmpeg-devel mailing list. > > Tested and working very good. Here is an example of a meteor in real > time, left side without and right side with lagfun filter: > https://www.youtube.com/watch?v=Bc_lLGOHjjM
Thank you for the demonstration! Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
