Hello @wfscans, friendly note that the Steam Linux Runtime compatibility tool option is intended for running Linux games on Linux, and not Windows games on Linux. It is a separate project from Proton.
Blind guess, does setting the game's launch options to PROTON_USE_WINED3D=1 %command% have an effect?
Doesn't seem to change anything when looking through the log. From looking at the log I imagine it has something to do with running non-multiarch gstreamer plugins.
I've found that by going into winecfg protontricks 721010 winecfg disabling winegstreamer and install quartz via protontricks 721010 quartz will cause audio will play for videos but show a black screen. This prevents the game from softlocking on videos but isn't the best fix obviously. Do note that the install will seem to fail due to not being able to replace the symlink in place by proton for quartz. But it seems that just the registry additions cause it to work oddly enough.
Proton-5.13-2:
steam-721010.log
So the video now plays with sound and everything. But softlocks when the video ends or you try to click next. This is done by installing the below. Seems to be a clear error at the end. Which I see a lot when trying to get video working in games. If you try to install quartz via protontricks/winetricks cause audio to play but black screen. Doesn't softlock.
514120.118:00c0:017c:err:ntdll:RtlpWaitForCriticalSection section 0x2b54ebc "../../../../proton/wine/dlls/quartz/filtergraph.c: IFilterGraphImpl.cs" wait timed out in thread 017c, blocked by 00f0, retrying (60 sec)
proton 5.0-10bx1 2020-12proton 5.13-2x2 2020-11proton 5.9-ge-8x2 2020-11PROTON_USE_WUNED3Dx1 2020-11PROTON_USE_WINED3D=1x1 2020-11PROTON_USE_WINED3D=1 %command%x1 2020-11
Compatibility Report
System Information
I confirm:
steam-721010_GE.log
steam-721010_513.log
Steam runtime doesn't get far enough to produce a log I guess.
Symptoms
When trying to load gstreamer plugin to play a video the program soft-locks(you can't click past it like mentioned on the protonDB page. You can go into settings of the game to disable video. But the video are kind of important(at least to me). Trying to use the steam runtime quits before the game even loads.
Reproduction
I've included a save that is one dialog line before the video starts playing. Load save 3 and click to advance.
NatPT_Save.zip