4K 60fps HDR outputting in 8-bit

[angry.sardine]

Note that this is not the same issue I was reporting here:

Posterisation on "World in HDR" at 1080p

So, I don’t really care about this but as it’s apparently unexpected behaviour, I thought you might want some logs to look at. I’m playing the test clip called The World in HDR (HEVC version). It plays fine at 4K, but if I switch resolution to 1080p then all of a sudden I’m seeing the kind of posterisation/banding that I associate with 8-bit output instead of 10-bit. The output signal is still 444 10-bit, but the banding is unmistakeable. Here are some logs. Playback starts at 2160p t…

Things have got worse since yesterday! Yesterday, a 4K/60fps/HDR clip was playing fine at native resolution (but was giving me posterisation/banding when downscaled to 1080p). Today, even at native res, all of my 4K/60fps/HDR videos are being output with an 8-bit signal rather than 10-bit, with consequent banding artefacts.

This may possibly be as a result of my going onto the staging repository yesterday. But I guess it’s also possible I’ve screwed up a setting somewhere while testing something else.

Logs: https://paste.osmc.tv/solawejeyi

[grahamh]

My bad. Fixing it… Only applies to staging build.

[angry.sardine]

Cool.

[angry.sardine]

Okay, just confirming that this is fixed in the latest staging build.