I Made a PQ to HLG Converter

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Originally Posted by wswartzendruber

I've noticed that VLC tone maps HLG differently depending on OS, which is strange.

Anyway, I also remember the release notes for 3.0.0 saying that they corrected HLG tone mapping.

Since you have the latest version of VLC, can you try to compare its HLG tonemapping to the one done by MPV? It would be interesting to see how they look like and whether the VLC guys actually really improved it compared to years ago.