Numbers We're Dumb? I'd like to see you work your way around a TTY, bro.

better tip: don't use linux cuz it's trash dumbass lmao

@Pierre Doon - You have to put Flip.sh inside
"{SteamLibrary} / steamapps / common /Devil May Cry HD Collection /data /dmc3 / Video"
Remove the Spaces, etc. Basically you just need to create a new Text Document inside the "dmc3/Video" Folder with a .sh extension
Paste the Code in.
Mark as Executable
Change to Video Folder
Run Script with ./Flip.sh

Finally, you need to manually rename every video extension back from MP4 to WMV (Or they won't play at all.) I tested the Script and all FMVs work in the correct way.

DON'T PUT THE SCRIPT IN THE ROOT FOLDER

You can message me if you want a Video tutorial or something.

@Lettuce how do I use this script on the Deck? I'm new to Linux

#!/bin/bash
## This Bash Script Flips all FMVs upside down.
## It also converts all WMV to MP4
for FMV in *; do ffmpeg -i $FMV -vf vflip ${FMV:0:-4}.mp4; rm $FMV; done
## chmod +x Flip.sh
## Credits to ProtonDB

I can almost guarantee by this point Valve has transcoded the videos (if that is the issue), so if it still does not play, its a wine issue with it not being able to start the video player.

Really, if you want to confirm, try GE Proton out, if the videos dont play, its a wine issue, or even potentially an issue of not having a dependency for the player installed.

@Bitwolf So what If we actually just replace the files with a proton-readable formats? Which ones would they be? I'll open a github repo for said files to replace with videos in the proper format to contribute to fixing this issue before Valve finds a solution to it which won't be soon.

use windows loosers

Cause it’s not that simple, getting video to work over wine/proton is a two step process.

1. Wine actually has to be able to start the video player properly.
2. The video has to be in a format that wine can play.

The GE build of proton can play significantly more codecs than valves, but if wine can’t open the video player, it won’t matter.

Replacing the videos outright is also not gonna work typically, the video player is expecting a certain type of codec, you typically can’t replace the files outright.

Valves solution is to transcode the videos to a Linux friendly format on top of the originals. But this still relies on the original files being there and wine being able to open the player.

Why not try replacing the videos with a better file format like flv or mp4?