Dull hdr playback - OnePlus 7T Questions & Answers

Dull hdr playback on Netflix / prime/ YouTube.
Also the side black bars appear grayish. Is this normal?

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[Q] MIUI 1.5.13 Videos Playback!!

I have problems about Video Playback. I'm using MIUI 1.5.13 Desire HD.
When u have recorded any videos and try to play/view, the video playback screen so little small in the center of the screen, it doesn't auto-rotate/full screen to horizontal or vertical if you rotate your phone.
No matter you rotate your phone to horizontal or vertical, the VIDEOS PLAYBACK STILL SMALL IN THE CENTER OF THE SCREEN.
Is there any way to make it normal video playback? or full screen.. Please i need your help..
did you turn on your autorotation in the notification toggle menu on the top bar?
Yes. I did turn it on and rotate 180degree too.. but nothing works on video playback it remains play with small screen. Auto rotate just works on messages and photo view on gallery /etc

APP or ROM for no good CAMERA focus and VIDEO color

I've buy the DHD but sometimes when i try to do photo or video the auto focus is no good,and i see a red color over the photo or the video...
there is an app that improved video recording and photo?
Thanks

Get YouTube to go full screen when connected over HDMI?

I want to watch YouTube videos from my 18.5:9 phone on my 16:9 (non-smart) TV. When I connect the phone with a standard USB-C to HDMI adapter, it mirrors the screen on the external display, but it zooms out so that the 18.5:9 aspect ratio is preserved, with black bars on the sides (portrait) or top and bottom (landscape) filling the empty space. When I watch a video in full screen on YouTube, the screen is still mirrored in the 18.5:9 ratio. When it's in landscape, that means there are black bars on the sides on the phone's display (because 18.5 is "wider" than 16), but on the external display, it means there are black bars on ALL sides!
Is there a way to either...
Make YouTube zoom onto the video so that it actually fills the 16:9 display properly...
or...
Make the S9 (presumably S8 is the same) output its display as 16:9 natively? EDIT: to clarify, can you force it to crop down to 16:9 on the actual internal display, so that when it mirrors to the external display, they're both in 16:9?
As one possible example of this working properly, VLC will automatically go into some sort of screen-casting mode when connected via HDMI, where the phone's built-in display only shows playback controls, while the external display shows the video, properly fit to the external display with no apparent cropping or zooming. (when the source video is 16:9, at least!)
Tried using YouTube Vanced instead of the original YT app?
https://forum.xda-developers.com/android/apps-games/app-youtube-vanced-edition-t3758757
Didn't work, unfortunately.
There are settings to ignore screen resolution in Vanced
Those just seem to allow the phone to output higher resolutions than the internal display is capable of; it doesn't actually change the aspect ratio of the output display...

over saturated colors in full screen YouTube videos

whenever a video is played in full screen its colors are over saturated specially in youtube
if you want to try it just open youtube in chrome in desktop mode and watch a video in regular screen then press full screen within seconds the colors will become over saturated
also the color wheel effect is minimal on full screen videos .. I think it is something related to full screen videos and hdr10 screen where colors should stay natural on non hdr videos but instead it pumps the video colors
where can we inform huawei with this bug
don't understand me wrong I don't want to get rid of the over saturated colors for all .. I just want the option to turn it on and off whenever I want

How to play hdr videos in any player other than the stock Samsung video player?

I've tried
Vlc
Mx player
Plex
All runs without hdr (but have proper colors, etc. It seems it automatically do HDR to sdr conversion).
While stock Samsung video player do display in hdr.
When hdr is active, it Easily can be noticed by seeing hdr video with high brightness gap (e.g. Neon signs, city line and bright sky), and by pulling down the notification bar or recent menu (colors / gamma will looks weird as heck)
Edit: same issue with this guy https://eu.community.samsung.com/t5/tablets/tabs4-amp-fake-hdr/td-p/884456

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