I found that SVP is installing the wrong Deinterlacing plugin into vlc... it's choosing the 22 file not the 30 file.
So /opt/svp/plugins/libvapoursynth_plugin.so.22 is choosen instead of /opt/svp/plugins/libvapoursynth_plugin.so.30 for the VLC in version 3.0.4-6.
Replacing it manually with the right version perfectly works (in opposite to the message displayed while installing by SVP - which states, that it was successfully installed, but VLC has removed the deinterlace support).
Maybe you can submit this as feedback/a bug to the developers?
Pinned Comments
C0rn3j commented on 2024-01-26 19:19 (UTC)
Linux thread on the SVP forum, where some comments may be more appropriate than here unless they relate to the packaging:
https://www.svp-team.com/forum/viewtopic.php?id=3167
Official Wiki page for good measure, which is a bit out of date at this point:
https://www.svp-team.com/wiki/SVP:Linux