[GawainSR]

I'm trying to get Kodi, running on RecalBox 9.2beta, RPI5 working properly with my Plex Media Server.

I've tried the following add-ona with the exact same problem.
-PlexKodiConnect
-Composite

Direct streams only display a track bar, no video.
Forced transcoded videos have numerous issues.
- Screen has large, rectangular green tinting over it.
- playback speed of video isn't correct.
- sync issued
- Miscellaneous artifacting of other scenes over the current one.

Are there perhaps codecs I need to force install?

I also tried the official Plex app but it appears abandoned and entirely non functional.

[fritsch]

I think no one can help you here. It's completely unknown what the "RecalBox" people do, what they ship, configure / etc. Head over to their support channel.

[GawainSR]

I think no one can help you here. It's completely unknown what the "RecalBox" people do, what they ship, configure / etc. Head over to their support channel.

:/ I'll look into tinkering with hw acceleration properties.

[GawainSR]

Disabling DRM Prime fixed my issues.

[popcornmix]

It would be useful information to test if LibreELEC works in place of recalbox's kodi.
If it does, then this is a question for recalbox who presumably need to update something that is not supporting pi5 (e.g. kernel, mesa, ffmpeg etc).

If this also fails then there is a different issue that needs investigation.