Iron Harvest (826630)

Compatibility Report

• Name of the game with compatibility issues: Iron Harvest
• Steam AppID of the game: 826630

System Information

• GPU: RX 590
• Driver/LLVM version: Mesa 20.3.5 / LLVM 11.0.1
• Kernel version: 5.10.70
• Link to full system information report as Gist:
• Proton version: 6.3-8

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.

Proton-Log: steam-826630.log.zip
Game logfile: Player.log.zip

Symptoms

When a cinematic (pre rendered MP4 videos) should be played, the screen simply turns black and nothing happens.
(no sound, no video skip when hitting escape)

Have a look at this lines in Player.log:

WindowsVideoMedia error 0x80004001 while reading Z:/home/myuser/opt/Steam/steamapps/common/Iron Harvest/release/IronHarvest_Data/StreamingAssets\Cinematics\c01pol.mp4

Context: Creating DXGI DeviceManager
Error details: Nicht implementiert. [german: Not implemented]

Workaround as described here:
https://www.protondb.com/app/826630#RzxldAlRP6
Use the Proton version by "GloriousEggroll" instead: https://github.com/GloriousEggroll/proton-ge-custom/releases/tag/6.21-GE-2
Somehow that Proton version doesn't have that bug. Can this be backported to vanilla Proton?

Reproduction

Play through the first campaign mission and the first cinematic will be played.

Start with the attached Player.log and Proton log, focusing on the WindowsVideoMedia error while opening release/IronHarvest_Data/StreamingAssets/Cinematics/c01pol.mp4 and the DXGI DeviceManager message. Compare the vanilla Proton behavior with the referenced Proton-GE 6.21-GE-2 workaround, then reproduce the first campaign mission. Done means the cinematic plays in vanilla Proton and can be skipped normally.