Color banding in HDR videos. - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

I don't know if my unit is defective, but on HDR videos (Youtube, Netflix, Mi Video, MXPlayer) you can see a lot of banding in the blacks and the jumps between colors (the dark scenes look very bad). I only found that this also happened to the Samsung S9 but they fixed it with an update. Can anyone check their unit with HDR videos with dark backgrounds? Thank you very much.

Mine Looks Great . Maybe you've got a bad unit

At night times dark videos looks like having some kind of noise.
I don't know what's the prb.

Are you on a custom ROM? I had these problems on pixel experience for the mi8

Related

Xperia T Color banding issue

I see color banding issue on Xperia T's interface. Even when the brightness is maxed out, it is severely affected by the banding issue and there's also noticeable amount of noise while playing Video. My firmware ver. 9.1.a.1.141
I have included an image to test the banding issue. Just download the image and open it in full screen to your device.
I have noticed this too. Especially with certain colors on the Walkman app backgrounds. Guess theres nothing you can do about it. Its due to the quality of the lcd. Bit depth and all that. Also sometimes i notice backlight bleeding on the sides. Most of these issues could be overcome by an AMOLED screen I guess.
If you can find a way to enable "surface dithering" like in cyanogenmod this could help. Problem is it may be enabled already. Doesn't really bother me, who really cares about blacker blacks? as long as colours are good
Sent from my LT30p using Tapatalk 4 Beta
In CM10 I noticed narrower bands of color gradient but in CM10.1 it is like the stock one.
But it's irritating that while playing video it tries to show more shadow detail and then the video becomes more noisier at high brightness. Also the sharpness of playback isn't good.

Is HDR10+ working for you?

Hello everyone,
I am in Xiaomi.eu and when I try to play an HDR10 video in youtube the screen blacks out and only sound plays. The touch screen is responsive so if you know the taps you can close the video and the screen will work again but I really want to see the difference in HDR content. Is it a Xiaomi.eu problem, or a general bug? Thank you in advance.
SOLVED: I do not know if this is a problem with the original MIUI but if the Contrast & Colors is set to Automatic contrast HDR works. I used standard contrast and that was the source of the problem .
When looking at a video on Youtube, HDR "visibly kicks in" (screen changes color temperature) and is visible in Youtube Quality settings.
The problem might come from the Xiaomi.eu rom or a setting.
BTW, you should assume, when using a custom rom, that it's always the origin of the problem, and ask your question in another way, like "Anyone on custom rom has hdr working" instead of thinking that it must be a Youtube bug lol

HdR on Netflix and Youtube not working?

Hello there.
It seems that HDR is not working in YouTube or Netflix although i get the HDR logo in Quality settings (YouTube) or next to the movie duration (Netflix).
The brightnes does not seem to change like it should even though the slider is on maximum and the image does not 'pop' for example in bright scenes.
I have a Xiaomi Mi8 to compare it to and side by side there is a huge difference and the Mi9T pro should have a slightly better panel. It just does not look like HDR mode is enabled on the panel itself.
I have noticed the same thing on 3 other devices like mine.
I am on MIUI Global 10.3.4.0 on Android 9.
Has anyone else noticed that or is it just me?
HDR
I have noticed the same things and maybe there is something wrong here as I have seen in other phones that reading mode does get disabled.
Try YT Vanced

Youtube colours are different.

When Playing a certain video, I happen to notice that the colours are slightly off. But when a screenshot of the same video is taken and viewed in the gallery, it looks fine. Didn't change any settings under display.
Any colour calibration in youtube playback?

Question HDR auto brightness

I recall on my older galaxy devices when viewing HDR on YouTube it would crank the brightness up to max on my S21 ultra this doesn't seem to happen now is this the same for everybody else?
Da1e7150 said:
I recall on my older galaxy devices when viewing HDR on YouTube it would crank the brightness up to max on my S21 ultra this doesn't seem to happen now is this the same for everybody else?
Click to expand...
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AFAIK it is a kind of bug in special firmware versions.
On recent firmware versions, it should be fixed.
You can read about it here:
Found A Bug With YouTube HDR w/ Autobrightness? (Oreo April Patch)
So I was appreciating the beautiful display on the Note 8 and it's abilities again today by watching a HDR video from YouTube on it, but I noticed something weird. Whenever I went from a bright to a dark environment, (lit bedroom to dark living...
forum.xda-developers.com

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