Blacks seem clipped off after playback

Help and Support Vero 4K / Vero 4K +
1

Hi,

I’ve got the following setup: Vero 4K → Denon X1300W → Samsung NU8000

I’m basically trying to find the correct video settings. Limited color space (16-235) is disabled. 422 color subsampling is disabled. Skin is set to 1920x1080p50.

❯ cat /sys/class/amhdmitx/amhdmitx0/config
AVIF VIC: 31
VIC: 31 1920x1080p50hz
Colour depth: 10-bit
Colourspace: YUV444
Colour range: full
EOTF: SDR
YCC colour range: full
PLL clock: 0xc000029a, Vid clock div 0x000b0000
Aspect ratio: 16:9/full frame
Audio config: on
3D config: off

The problem is that after booting up Vero the skin has the correct contrast:

After fresh boot
After fresh boot4032×3024 2.25 MB

But after playing back a video (i.e. changing refresh rate and/or resolution) the skin comes back with what looks liked clipped blacks to me:

After video playback
After video playback4032×3024 2.31 MB

Any ideas what could cause this?

Thanks

2

Yes

3

Thanks, but why does it look fine on boot/reboot?

4

I assume you have refresh rate adjustment turned on and so when you play a video it causes your TV to switch its display. I imagine that your TV is smart enough to know that 8-bit video that is not coming from a game console or a computer is always limited so it correctly sets itself back to its default limited range. The error here is that you told your Vero to output in a non standard manor. That setting is there to deal with people using computer monitors as displays, not TV’s.

5

Thanks for the explanation. That indeed solves it.