SVP:Plex Media Player

Setting up Plex (Windows, Mac), Plex HTPC (Windows), Plex Media Player (Windows, Linux, macOS)

• versions used: Plex 1.107.1 (22 Jan 2025), Plex HTPC 1.69.0 (9 Dec 2024), PMP 2.58.0 (19 May 2020)
• developer's web site

Installation - Windows

• Install Plex for Windows or Plex HTPC or Plex Media Player (discontinued)
• Install mpv shared library package from the SVP's installer
• Run Utilities -> Set environment variables OR adjust a few system settings manually to allow Plex find the Vapoursynth installation:
  • add SVP 4\mpv64 folder to the PATH environment variable
  • add new env variable called PYTHONPATH, containing the same SVP 4\mpv64 path

How to manuallly set environment variables

Plex for Windows

• Replace Plex's libmpv-2.dll with the one from "SVP 4\mpv64\": copy "C:\Program Files (x86)\SVP 4\mpv64\libmpv-2.dll" to "C:\Program Files\Plex\Plex\libmpv-2.dll"
• For older versions of Plex download mpv-2.dll manually and replace "mpv-2.dll" instead.
• Create mpv's configuration file in "C:\Users\<name>\AppData\Local\Plex\mpv.conf" with the following contents:

input-ipc-server=mpvpipe
hwdec-codecs=all
hr-seek-framedrop=no

Plex HTPC

• As of January 2025, Plex HTPC app isn't yet updated for newer mpv support. Please download mpv-2.dll manually.
• Replace Plex's mpv-2.dll with the downloaded one: copy mpv-2.dll to "C:\Program Files\Plex\Plex HTPC\mpv-2.dll"
• Create mpv's configuration file in "C:\Users\<name>\AppData\Local\Plex HTPC\mpv.conf" with the following contents:

input-ipc-server=mpvpipe
hwdec-codecs=all
hr-seek-framedrop=no

Plex Media Player

• PMP 2.58 is not compatible with mpv 0.33 and later! Here's the direct link to the last compatible mpv-1.dll build.
• Replace Plex's "mpv-1.dll" with the one from "SVP 4\mpv64\": copy "C:\Program Files (x86)\SVP 4\mpv64\mpv-1.dll" to "C:\Program Files\Plex\Plex Media Player\"
• Create mpv's configuration file in "C:\Users\<name>\AppData\Local\PlexMediaPlayer\mpv.conf" with the following contents:

input-ipc-server=mpvpipe
hwdec-codecs=all
hr-seek-framedrop=no

• Turn on hardware video decoder: edit "C:\Users\<name>\AppData\Local\PlexMediaPlayer\plexmediaplayer.conf", find the line containing "hardwareDecoding" and set it to

"hardwareDecoding": "copy",

Installation - macOS

• macOS 13 or later: allow Terminal app to update other applications in System Settings -> Privacy & Security -> App Management -> Terminal = checked
• Install Plex for Mac into /Applications
• Run it for the first time, then exit

Plex for Mac

• Warning! Only Plex for Mac ver.1.107.1 or later is compatible with mpv from Homebrew! Update your Plex app first.
• Replace Plex's libmpv.2.dylib with the one from Brew installation: /opt/homebrew/lib/libmpv.2.dylib (ARM) or /usr/local/lib/libmpv.2.dylib (Intel) -> /Applications/Plex.app/Contents/Frameworks/libmpv.2.dylib

rm -f /Applications/Plex.app/Contents/Frameworks/libmpv.2.dylib
ln -s /opt/homebrew/lib/libmpv.2.dylib /Applications/Plex.app/Contents/Frameworks/libmpv.2.dylib

or, for the Intel-based Macs:

ln -s /usr/local/lib/libmpv.2.dylib /Applications/Plex.app/Contents/Frameworks/libmpv.2.dylib

• Create mpv's configuration file in "~/Library/Application Support/Plex/mpv.conf" with the following contents:

input-ipc-server=/tmp/mpvsocket
hr-seek-framedrop=no

From the Terminal:

echo "input-ipc-server=/tmp/mpvsocket" >> ~/"Library/Application Support/Plex/mpv.conf"

Troubleshooting

If you get the playback error - An error occurred trying to play <video title> - turn off secure connections in the Plex Server settings:

Plex Server -> Settings -> Network, set Secure connections to Disabled and restart Plex Media Player.