@littlegamer87 while logged in into the account that can't play the videos, run this in your terminal steam steam://unlockh264/ and then try to run the game and see if the videos play.
@simifor that works indeed. I confirmed the issue was still there, closed the game and ran the command and the videos play as intended
[!NOTE]
I could help testing other proton versions, let me know if this would be helpful.
I have a Huawei Mateview 28 which has a weird 3:2 ratio at 3840 * 2560 @ 60Hz (via DP cable). I noticed some games don't fully work in "full screen", more details below.
Compatibility Report
System Information
I confirm:
Proton Log
Symptoms
All cutscenes are replaced with a test card (SMPTE color bars, with analog static noise in one section). Sound of the cutscene does play as expected.
I have one linux account on my machine, with 2 steam accounts associated. One account plays cutscenes just fine, the other does not.
Switching to GE-Proton10-15 seems to fix the issue. This, combined with more mentions of this issue on protondb suggests a Proton issue.
An issue exists on Windows for this game where cutscenes do not play, screen stays black and may crash. Root cause seems to be missing Microsoft Media Foundation, eg a stripped Win11 installation (tiny11). On Proton the screen does not turn black but shows the test card instead.
The native Linux build is not affected, but it is unplayable due to controller issues.
Reproduction
Start a new game. The first loading screen shows a poem, waiting/skipping it plays a cutscene where the issue could be present.
Alternatively, use the bell beast/bellway fast travel where another cutscene plays.