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daoed

Member

Registered: 2023-10-05

Posts: 6

MPV square artifacts on HDR playback

On playback of HEVC 10-bit video with mpv, little squares and partial frame freezes occur. Screenshots

Hardware decoding is working and toggling it on/off does not affect the artifacts.

10-bit incapable players such as vlc play the file smoothly (with improper tone-mapping).
Any non-HDR file plays back smoothly on mpv.

dsp: Wayland
CPU: 13th Gen Intel i9-13900H (20) @ 5.200GHz
GPU: Intel Raptor Lake-P [Iris Xe Graphics]

UPDATE: the issue is resolved by running mpv with

--hdr-compute-peak=no

Last edited by daoed (2023-10-06 08:13:00)

just4arch

Member

Registered: 2023-01-07

Posts: 99

Re: MPV square artifacts on HDR playback

You haven't mentioned any specific options that might be involved, so have you tried

mpv --no-config --vo=gpu-next ...

gpu-next seems to handle HDR rather nicely.

daoed

Member

Registered: 2023-10-05

Posts: 6

Re: MPV square artifacts on HDR playback

thanks for the reply. gpu-next didn't remove the artifacts. I played around with other options and found the cause:
hdr-compute-peak seems to be enabled by default on my hardware. disabling it via

mpv --hdr-compute-peak=no ...

resolved the issue.