Myst (1255560)

[ProfessionalSpaghettiCoder]

Compatibility Report

• Name of the game with compatibility issues: Myst
• Steam AppID of the game: 1255560

System Information

• GPU: NVIDIA GeForce RTX 2060 SUPER
• Video driver version: nvidia 535.230.02
• Kernel version: 6.11.0-26-generic
• Proton version: Proton Experimental (10)

I confirm:

• that I haven't found an existing compatibility report for this game.
• that I have checked whether there are updates for my system available.

Symptoms

The intro video and ingame FMV only show a white screen. The audio of the videos is still working.
The videos were working on "Proton Experimental 9" but after the "Experimental" branch was updated to Proton 10 they stopped working.

This issue also exists on Proton 9.0-4.

I'm guessing that some workaround for FMV codecs got lost when the "Experimental" branch got updated to Proton 10.

Reproduction

Just start the game and check the intro video. It should be rendered correctly and not as a white screen.