Good day, I've tried to make a stroboscope effect with ffplay but didn't find an appropriate way. Do you have some tips?
Here are my efforts: ffplay -f lavfi -i color=black:s=512x512 -vf "framestep=3,drawbox=x=0:y=0:w=512:h=512:color=white:t=500" (only a white picture, think it generate a black picture, drop 2 frames and overlay the third with a white box) ffplay -f lavfi -i color=black:s=512x512 -filter_complex "split [main][tmp]; [tmp] framestep=3,drawbox=x=0:y=0:w=512:h=512:color=white:t=500 [white]; [main][white] overlay" This did not work, because ffplay did not understand -filter_complex. So I used ffmpeg to generate a video out of it: ffmpeg -f lavfi -i color=black:s=512x512 -filter_complex "split [main][tmp]; [tmp] framestep=3,drawbox=x=0:y=0:w=512:h=512:color=white:t=500 [white]; [main][white] overlay" -t 30 -framerate 25 foo.mkv and replayed it, but the video was completely black. My thoughts were to draw every frame a black frame but overlay it every third frame with a white box. Gerion _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
