Posts by kubrickdave

Quote from jd17

I understand.
With a bit more distance to a maybe smaller TV I can see how the issue might not be very obvious - especially if there is no direct comparison to Jarvis or another device.
However watching SD or 720p content I can move far away from my 65" and still see the problem.

At my regular 3m distance to the 65", it is unacceptable to me, no matter which resolution.
But I am patient and Jarvis works perfectly, so I will just do whatever I can to help resolve the issue.

I immediately noticed it, while watching Scarface. The intro has red on black titles, a perfect edge case for poor chroma scaling.
But it's not nearly as noticeable during regular film frames.

kszaq Am I right in assuming that the fractional framerate adjustment only works when using HW decoder?

Quote from kszaq

Fractional frame rate fix in testing now: drivers/amlogic/display/vout: framerate automation fix by kszaq · Pull Request #43 · LibreELEC/linux-amlogic · GitHub

Awesome. Do you have any clue on why chroma scaling is only nearest neighbor when using amlogic decoder?
According to comments it seems to be higher quality on Jarvis.

Quote from ssarava9

How do you find whether tv plays 8 bit or 10 bit HDR, I have Samsung 60" 4K tv with hdr 10 support

Sent from my iPhone using Tapatalk

I have a Denon AVR which displays chroma resolution and bit depth for the input signal. 10 bit works just fine coming from an Xbox One S.

HDR works. The only problem is, the box only outputs 8 bit color instead of the proper 10 bit.
My TV (Sony Z9D) still goes into HDR mode and the PQ is mostly fine, but you can see banding in gradients.

I discovered the display_bpp u-boot variable, which is now set to 24 (so 8 bit). Would changing that to 30 give me the 10 bits?
I'm a little hesitant to try it out, since I don't want to brick my bootloader.

I can also confirm the judder on 23.976hz material.

Another issue is the fact that when playing back 1080p (and outputting 1080p), the output is 4:4:4, but the chroma upscaling is just simple nearest neighbor, which looks horrible.
As a workaround I switched to software decoding, which uses ffmpeg to do the chroma scaling.

EDIT: I'm on S905X (Beelink MXIII - II)