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Cannot transcode HEVC Main10 on Decoding supported iGPU #6818
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Reference: starred/jellyfin#6818
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Originally created by @kada49 on GitHub (Mar 11, 2025).
Description of the bug
When trying to transcode a 4k HEVC HDR10 to h264 the player fails with
Playback Error Playback failed due to a fatal player error.Reproduction steps
What is the current bug behavior?
The player fails with
Playback Error Playback failed due to a fatal player error.What is the expected correct behavior?
Jellyfin should be able to at least decode the video and reencode it into AVC (x264)
Jellyfin Server version
10.10.0+
Specify commit id
No response
Specify unstable release number
No response
Specify version number
No response
Specify the build version
10.10.6
Environment
Jellyfin logs
FFmpeg logs
Client / Browser logs
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Relevant screenshots or videos
No response
Additional information
I looked at some issues regarding similar problems ans found #4194 to be near the same issue.
Reading through the comments I found this one that says that Intel Graphics HD 530 doesn't support HEVC Main10. I tried to run vainfo and cound indeed not find a Main10 Entry.
But when searching online for the supported codecs I found many sources (CPU-Benchmark, CPU-Monkey and Wikichip) claiming that the gpu should support decoding HEVC 10bit aka Main10.
So here's the question: Are those sources wrong? Is maybe the HEVC 10bit decoding supported only on Windows?
If its the case that it is only supported in Windows, what project would need to add support for this feature?
Is there a toggle somewhere to disable hardware decoding for Main10 somewhere so that it will be slow but working instead of failing? (Edit: found it)
Thanks in advance
David
@gnattu commented on GitHub (Mar 11, 2025):
HD530 does not support HEVC 10bit decoding.All sources says it can are referring to the "hybrid decoding" which requires CPU do to do partial decode. Jellyfin requires full decode capability.