The user in the associated issue mentioned wanting to use GSLS support. As far as I am aware libplacebo alone doesn't enable this and it also requires gslslang.

this is WIP - I also tried enabling glslang simultaneously locally and I wasn't able to observe any difference in the test I tried despite that.

I've managed to do things to Termux's glslang, libplacebo and ffmpeg packages until my test command now shows the same exact error in Termux that it does on GNU/Linux for me, which seems like progress:

[libplacebo @ 0xb400007ede0176f0] Found no suitable device, giving up.
[libplacebo @ 0xb400007ede0176f0] Failed initializing vulkan device
[libplacebo @ 0xb400007ede0176f0] Failed creating Vulkan device!
[Parsed_libplacebo_0 @ 0xb400007dfe031ad0] Query format failed for 'Parsed_libplacebo_0': Generic error in an external library

Good point, I think they do. I see this:

CANNOT LINK EXECUTABLE "mpv": cannot locate symbol "pl_log_create_338" referenced by "/data/data/com.termux/files/usr/bin/mpv"...

After I recompiled mpv in the same container where I bumped libplacebo, then installed that build, the error stopped.

The PR has been confirmed to work, without errors, with GPU acceleration enabled on this device:

Samsung Xclipse 920

while using this driver:

• addpkg(main/mesa-vulkan-icd-wrapper): Android Vulkan wrapper #22500

by user: NoNameForIdea

I will merge it in 24 hours if no problems are found.

On some devices this does not help, but this will not break preexisting ffmpeg scripts on those devices because Vulkan was never enabled fully in ffmpeg in Termux previously, so never worked before.

On other devices it does help and will allow writing new scripts that work on those devices where this does work.