Failing to load mp4 files in Proton

[tommydrum]

1. Bug description

On loading any downloaded song with a video, a generic color test video plays (likely Unity's default. Note: downloading video's works fine). This happens for every mp4, and I have a few dozen downloaded.

I am currently using ALVR to interface Linux with the Quest 2. That shouldn't matter, as it just comes as OpenXR in the end. Steam is running in an arch distrobox, but again, that also shouldn't matter, as Beat Saber is running in Proton. My only theory, is some sort of file loading issue, before it gets passed into Unity for playing.

2. BSIPA log

Going through the log, the only error I'm finding, is at initiation, and is the following:

[ERROR @ 18:35:42 | IPA/Updater] Error copying file Libs\ffmpeg.exe from Pending:
[ERROR @ 18:35:42 | IPA/Updater] System.UnauthorizedAccessException: Access to the path "Z:\var\home\tommydrum\ALVR-Distrobox-Linux-Guidance\installation\arch-alvr\.local\share\Steam\steamapps\common\Beat Saber\IPA\Pending\Libs\ffmpeg.exe" or "Z:\var\home\tommydrum\ALVR-Distrobox-Linux-Guidance\installation\arch-alvr\.local\share\Steam\steamapps\common\Beat Saber\Libs\ffmpeg.exe" is denied.
[ERROR @ 18:35:42 | IPA/Updater]   at System.IO.File.InternalCopy (System.String sourceFileName, System.String destFileName, System.Boolean overwrite, System.Boolean checkHost) [0x00036] in <eae584ce26bc40229c1b1aa476bfa589>:0 
[ERROR @ 18:35:42 | IPA/Updater]   at System.IO.FileInfo.CopyTo (System.String destFileName, System.Boolean overwrite) [0x00035] in <eae584ce26bc40229c1b1aa476bfa589>:0 
[ERROR @ 18:35:42 | IPA/Updater]   at (wrapper remoting-invoke-with-check) System.IO.FileInfo.CopyTo(string,bool)
[ERROR @ 18:35:42 | IPA/Updater]   at IPA.Utilities.Utils.CopyAll (System.IO.DirectoryInfo source, System.IO.DirectoryInfo target, System.String appendFileName, System.Func`3[T1,T2,TResult] onCopyException) [0x000a5] in <85e5e5773585418d89fcc2712ee48bcc>:0 
[ERROR @ 18:35:42 | IPA/Updater] Something went wrong performing an operation that should never fail!
[ERROR @ 18:35:42 | IPA/Updater] System.UnauthorizedAccessException: Access to the path "Z:\var\home\tommydrum\ALVR-Distrobox-Linux-Guidance\installation\arch-alvr\.local\share\Steam\steamapps\common\Beat Saber\IPA\Pending\Libs\ffmpeg.exe" is denied.
[ERROR @ 18:35:42 | IPA/Updater]   at System.IO.File.Delete (System.String path) [0x00073] in <eae584ce26bc40229c1b1aa476bfa589>:0 
[ERROR @ 18:35:42 | IPA/Updater]   at System.IO.Directory.RecursiveDelete (System.String path) [0x0003f] in <eae584ce26bc40229c1b1aa476bfa589>:0 
[ERROR @ 18:35:42 | IPA/Updater]   at System.IO.Directory.RecursiveDelete (System.String path) [0x00024] in <eae584ce26bc40229c1b1aa476bfa589>:0 
[ERROR @ 18:35:42 | IPA/Updater]   at System.IO.Directory.Delete (System.String path, System.Boolean recursive) [0x00009] in <eae584ce26bc40229c1b1aa476bfa589>:0 
[ERROR @ 18:35:42 | IPA/Updater]   at IPA.Injector.Updates.InstallPendingModUpdates () [0x0024b] in <46e2caf7ec4c4ab78a3af56e96d642ab>:0 

Later in the logs, I get the occasional "Loading video: " info log, but no logs following. This, as expected, shows up when loading a song, and the unity default video is loaded instead. I don't actually know if it's ffmpeg or not, as downloading videos does work just fine (and ffmpeg is likely used for the conversion)..

Full log is attached.

_latest.log

[Kevga]

I don't think I have ever seen or heard of a color test video. Does it look anything like the screenshot in #51? Others reported there that they had to change permissions for ffmpeg, maybe you could give that a shot.

[tommydrum]

I also thought permissions may have been an issue, so I just put a chmod 777 on the ffmpeg.exe (which is essentially no security whatsoever, on this file), but no luck. If you have an idea of a directory I can change permissions on, I'll try.

@Kevga Thanks for taking a look :)

Edit: saw on other thread, to use GE-Proton7-26, so I'm testing that now

[tommydrum]

I tested with GE-Proton8-4, and that works, for others that have any proton issue and stumble on this thread, use Proton GE :)