Warning, spoilers for the Elden Ring Malenia Boss fight.
https://www.youtube.com/watch?v=A9uV0FFghzo
I was doing some Elden Ring coop and decided to play some Vault of the Void while waiting for people to summon me, some hours later when I went to edit the replays (I didn’t have the preview ON in OBS) I found this “coloring issue”, this didn’t happen in my previous recordings (yes, it’s the first time I tried playing both games at the same time, so the bug is related to that).
The OBS video encoder used was FFmpeg VAAPI HEVC encoder.
Maybe someone knows why this happens.
Youtube description has a bit more context.