On Mon, Nov 16, 2020 at 12:41 PM Michael Koch <astroelectro...@t-online.de> wrote:
> Am 16.11.2020 um 12:22 schrieb Paul B Mahol: > > On Mon, Nov 16, 2020 at 12:13 PM Michael Koch < > astroelectro...@t-online.de> > > wrote: > > > >> When I overlay a bluescreen foreground video over a background video, > >> which is the best place for the despill filter? (a) before colorkey or > >> (b) after colorkey or (c) after overlay? > >> > >> [foreground](a),colorkey,(b)[fg];[background][fg]overlay,(c) > >> > >> I found here an example for (c) but I doubt that this makes sense: > >> https://gist.github.com/kerbeh/fbe0cd0d89c424708c119e0a0d00ca88 > >> > >> > > Why do you doubt that it does make sense? > > I doubt that (c) is the right place because at position (c) the despill > filter also affects the background video, which surely doesn't have any > contamination from the bluescreen. > Then use it after colorkey. > > Michael > > _______________________________________________ > 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". _______________________________________________ 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".