Error transcoding mkv using Proxmox

[TheDreadPirate]

I've seen some of the low power Intel CPUs not have completely identical Quick Sync capabilities as the rest of that generation's lineup and I'm wondering if that is the case here. Coffee Lake supports 10-bit HEVC and, AFAIK, there aren't any restrictions on resolution or profile/level in general.

My only suggestion is to uncheck HEVC 10-bit in the Playback settings.

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Just noticed that the 8250u is Kaby Lake R and not Coffee Lake like the rest of the 8000 series. That might explain it. But Kaby Lake also supported HEVC 10-bit, wtf!