There is now a vulkan and onevpl included AppImage for testing purposes at the website Download area:

    https://download.cinelerra-gg.org/?path=testing&sort=date_desc

file name is vulkan_onevpl-x86_64.AppImage.

It includes the latest vulkan-wip.diff patch tne the ffv1_vulkan.mov render format.

(And THIS TIME, I verified with "nm -D" to make absolutely sure it contained qsv, vulkan, and VPL symbols!)