Blank video in Avidemux under Wayland

[davidrnewman]

Avidemux 2.7.8 works fine in Kubuntu 21.10 under X11 and KDE Plasma.

But when I try to run it under Wayland, the video image window is black. Audio comes through, but I cannot see anything, so I cannot configure filters.

[eumagga0x2a]

Wayland is not supported yet, unfortunately, so even using the latest nightly won't help. Quality code contributions warm welcome.