>It's a decimal input which is then treated as a binary bitmask. So dec >10 becomes bin 1010 i.e. filter the 1st and 3rd planes. > >Gyan
Ah! that would explain a lot! I can confirm I'm still confused, however.. My understanding is that RGB24 has three planes, red then green then blue. From your example it seems the masks act big endian so bit 0x08 represents the first plane and bit 0x02 the third? Using planes=10 ( should be Red and Blue) gives a trail effect on the blue, there is no strong red in that source: see http://www.robinbussell.co.uk/mov/greenlagtest11.mp4 However using planes=4 (should be G plane by my reasoning) seems to have no effect: http://www.robinbussell.co.uk/mov/greenlagtest12.mp4 Just for completeness, here is planes= 2 :http://www.robinbussell.co.uk/mov/greenlagtest13.mp4 .. blue trails evident In the above examples I also turned up the green before lagfun so full line for last example is: ffmpeg -i IMG_1685.MOV -q:v 0 -vcodec h264 -acodec aac -strict -2 -filter:v format=pix_fmts=rgb24,colorlevels=romax=0.6:bomax=0.6,lagfun=decay=0.999:planes=2 greenlagtest13.mp4 Thanks, Robin. -- Sent from: http://www.ffmpeg-archive.org/ _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
