On Mon, Nov 16, 2020 at 7:45 PM Michael Koch <astroelectro...@t-online.de> wrote:
> Am 16.11.2020 um 16:12 schrieb Paul B Mahol: > > 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. > > Is it possible to send zmq messages to the despill filter? I want to > adjust the mix, expand and brightness parameters in real time. I'm > sending the zmq messages from my own C# program. Messages to colorkey > (color, similarity) and overlay (x, y) are already working. When I send > messages to the despill filter, there is no error message but nothing > changes in the output video. Either I have something wrong in my code, > or the despill filter doesn't use the new values. > Nowhere is documented that despill have support for commands and thus it does not have support for commands. > > 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".