Working great! Thanks! I've made a simple batch file that copies over the DLL I run whenever Plex updates. Make it in Notepad and change the extension to .bat. Then run as administrator.

@echo off
set "source=C:\Program Files (x86)\SVP 4\mpv64\libmpv-2.dll"
set "destination=C:\Program Files\Plex\Plex\libmpv-2.dll"

echo Copying file...
xcopy /Y "%source%" "%destination%"

echo File copied successfully!

I'm facing the same issue—`mpv-2.dll` is missing, replaced by `libmpv-2.dll`. Renaming `mpv-1.dll` from SVP to `libmpv-2.dll` didn’t work.

Until a fix is released, I've set:

[debug]
disableUpdater=true

in the `Plex.ini` file located at `%LOCALAPPDATA%\Plex\plex.ini`.

Additionally, I reinstalled the previous version of Plex—`Plex-1.106.0.276-fe8d1d20-x86_64.exe`—from `%LOCALAPPDATA%\Plex\cache\updates\1.106.0.276-fe8d1d20\packages\Plex-1.106.0.276-fe8d1d20-x86_64.exe`.

Lastly, I replaced `mpv-2.dll` as normal from:
- `C:\Program Files (x86)\SVP 4\mpv64\mpv-1.dll` 
  to 
- `C:\Program Files\Plex\Plex\mpv-2.dll`.