Banding issue

[tinpanalley]

I've calibrated my TV (Hisense 55U68KM) and everything looks as good as possible. But I'm seeing a lot of banding in dark areas. Technically, by the numbers and results in calibration I should be fine. What reasons would cause banding when the video isn't some massively compressed garbage signal? Could the panel somehow still be too bright despite having done proper brightness, contrast, gamma, and white level calibration? Should I just turn downbrightness or something until they go away? I can't tellmy display is too hot or if this is banding I'm going to see no matter what.

[johnt]

What is your source? Most streaming services do not output in a high enough bitrate to eliminate banding completely.

[tinpanalley]

5 hours ago, johnt said:

What is your source? Most streaming services do not output in a high enough bitrate to eliminate banding completely.

My own 1080p videos encoded with minimal compression from my home network.

[QuantumRand]

Do you have a photo of the banding?

 

Here's my guesses for the potential causes:

• Blooming
  • Your TV has 120 dimming zones, so light details on a dark background will create blooming which looks similar to banding but is limited to light objects on dark backgrounds.
• Compression Artifacting
  • You said you encoded your 1080p videos. What was the original source, and what encoder settings did you use?
• Signal Compression
  • How/what are you connecting to your TV to play your videos? If you're upscaling to 4K but using an HDMI cable that only capable of 10Gbps (version 1.4a and older), the signal might step down to a 4:2:2 or 4:2:0 colorspace. Or perhaps whatever box/player you're using is defaulting to a lower colorspace.
• Driver Settings
  • If you're using a computer to playback your media, your video driver might be doing some sort of display or color processing.

[circeseye]

1080 source to 4k screen will have "banding" in black areas. black wont look as clean. im on a oled and see it.

[tinpanalley]

3 hours ago, circeseye said:

1080 source to 4k screen will have "banding" in black areas. black wont look as clean. im on a oled and see it.

This is why I didn't want a 4K screen. I have no use for it. All my content is at most 2K and I don't do streaming. I hate our current TV tech. CRT and CRT-HD didn't care what you plugged into it. We've overcomplicated the crap out of everything for very little gain.

[circeseye]

1 hour ago, tinpanalley said:

This is why I didn't want a 4K screen. I have no use for it. All my content is at most 2K and I don't do streaming. I hate our current TV tech. CRT and CRT-HD didn't care what you plugged into it. We've overcomplicated the crap out of everything for very little gain.

even compressed 4k video blacks look clean over uncompressed 1080. which are about the same file sizes between them.
and very little gain? theres a huge difference between 1080 and 4k video. and 2k is middle ground gaming res so

[tinpanalley]

38 minutes ago, circeseye said:

even compressed 4k video blacks look clean over uncompressed 1080. which are about the same file sizes between them.
and very little gain? theres a huge difference between 1080 and 4k video. and 2k is middle ground gaming res so

Not if you barely have any 4K sources and if your screen is only so big. Middle ground gaking is also relative. Depends what you play and what your needs are. Ive never played a game that benefitted from more than 1080p. But that's just in the games I play, not in everyone's case.