I noticed that in .../bin/ffmpeg/plugin.opts (and also in
.../ffmpeg/plugin.opts, of course) the "new in 5.0" and "new in 5.1"
sections are missing.
I fixed some minor errors and basically went back to your version with both the "new" and "broken" ones on the end. Sorry for the confusion. For some reason I got confused by both "blackdetect" and "blockdetect" but looked in ffmpeg's release notes to find out blockdetect is not new but apparently was just missing from the original plugin.opts. Also, deleted F_chromakey_cuda in the manual. Checked changes into GIT. Let me know if you see any other mistakes I may have introduced. And thanks again for providing plugin.opts and checking it for me. ...Phyllis