Regarding HDR Playback on VLC - OnePlus 6 Questions & Answers

Does OnePlus 6 also support HDR? I know it's not officially stated but YouTube supports HDR on OnePlus 6. I downloaded a few of the demos and tried playing them in VLC. Upon opening, VLC directed me to "allow modifying system settings" to change screen brightness, I'm assuming it was trying to set it to Max. I enabled it and the video is now playing at full brightness in VLC. I was using DCI-P3 color profile. However, after trying to play the video again the brightness is not set to Max. I tried reinstalling VLC and playing the video again, this time I didn't get the prompt to enable system modifications as it was off by default for new apps. So now the video on playing in VLC doesn't set the brightness to Max. Tried giving permission to modify system settings, still not setting brightness to max. I'm assuming upon brightness going all the way, HDR is triggered, as I don't have any other visual indicator in VLC to see if HDR is truly ON.
YouTube HDR works great everytime, high contrast and brightness set to Max automatically.
I don't know if the display of OnePlus 6 is 10bit but that's highly unlikely.
Tried restarting, reinstalling VLC and changing color profiles to DCI-P3. Auto brightness is off, some users reported on other devices it affected HDR auto brightness so I kept it off. Nothing puts brightness to Max upon opening videos in VLC.
I'm on latest OOS 9.0 Stable OTA. I am using 4k HDR demos from 4kmedia.org and I have 4k HDR movie on my device.
Does anyone have working HDR videos on VLC? How did you get it to work and how do you know that it truly is displaying in HDR?
I don't know if any other video player which can display HDR videos as intended on Android. If you know any other video player which works for OnePlus 6 to display HDR then please let me know (and drop a link of possible).
Since I did get the prompt for the first time upon opening HDR video on VLC to allow VLC to set max brightness, I believe that the device just might do it but I'm held back by some software bug.
Sorry for the long post! Just wanted to make sure I covered everything.

Related

Issue with 4k video rotate

Has anyone else seen an issue with 4k video being played back rotated as if it were recorded in portrait (and yes it was recorded properly)? See attached screenshot.
This playback occurs in all players I have tried except VLC. Playing back in VLC isn't always an option so I'd like to get this fixed without having to go to 4k editing software for every clip that has this issue.
I have see this issue on about 20% of the videos I have shot in 4k. The details of the files look like they have the correct width and height, just like the other files that playback fine.
Any ideas?

[Bug] Android video driver crash under specific circumstances

Device Manufacturer & Model: LG Nexus 5
Android Version: 5.0.2
Rom Info: CM12 02/28 Nightly, tested also on CM12 02/15 Nightly
Detailed Problem Description:
Hi. I have encountered a very specific issue with MX Player. When I am playing full HD portrait video and next video is full HD landscape, the Android video driver seems to completely crash in the event when videos switch. E.g. when portrait one ends and landscape one starts playing. Sometimes the device freezes with corrupted graphics, sometimes it recovers, but graphics are shifted and reboot is needed to resume normal operation.
I have reset the settings to default when reproducing the issue and only setting I am using is Display / Settings / Screen / Orientation : Auto rotation. I am holding the phone in portrait, so basically the first video should be full screen on my phone and the second should be scaled down a lot to fit in portrait. It happens with both HW and HW+ codecs.
I have recorded two short videos which can be used to reproduce the problem. I have also recorded the behavior on the phone using another camera (this time the phone "kind of recovered").
Steps to reproduce the problem:
1. Install MX player.
2. Set Display / Settings / Screen / Orientation : Auto rotation
3. Play attached videos when holding the phone in portrait, the crash should appear when the first ends and the second starts.
See recorded video for details.
Logs from MX Player
Video 1 - portrait
Video 2 - landscape
Issue recorded using another camera to show what happens on the phone
It works in default video player and does not cause anything similar. I did not have a chance to try it on stock ROM yet. However, I have a lot of videos with different sizes and switching between them does not cause the issue. Just full HD videos.
Let me know if any more details are needed.
It happens on stock 5.1 too. Very annoying if you have mix of portrait and landscape videos recorded.
fenikso said:
It happens on stock 5.1 too. Very annoying if you have mix of portrait and landscape videos recorded.
Click to expand...
Click to collapse
It looks like ROM issue if HW has same issue.
FYI, HW is default media player actually which is provided by the OS.
bleu8888 said:
It looks like ROM issue if HW has same issue.
FYI, HW is default media player actually which is provided by the OS.
Click to expand...
Click to collapse
I did some more testing. It happens on all factory images I had for Nexus 5, 4.4.4, 5.0.1, 5.1. All of them exhibit the same problem. I tried also the SW decoder, but that did not tell me anything, as SW does not follow the tag for portrait orientation, so the portrait video showed up as landscape anyway.
Now the interesting part is that default player does not crash like that, when switching between the videos. But it takes longer to switch. It seems that it deletes the whole drawing surface and starts it again. Contrary, when switching videos in MX Player you can always see last frame of previous video stretch to the following video size before it starts playing.

Video player that supports software brightness adjustment (not screen/hardware bright

I've been a long time user of MX Player, and generally, I've been really happy with it. I love the swipe features including adjusting system brightness, volume, and time seeking. However, I'm finding that when watching videos in my car during my lunch break, many videos are extremely dark, even when I have the screen brightness maxed.I'm looking for a player that can increase the brightness of the video.Can I Do

How to keep VLC playing with screen off? OnePlus 6

I went into the VLC settings and enabled background playing, but every time I turn off the screen it still shuts off. I also disabled battery optimization.
Any solution?
With VLC after you select the appropriate setting, which you said you have, you have to minimize VLC first and then turn the screen off. That will work. I just tested.
Or just use MX Player. Go to settings, turn on the appropriate setting and you can turn the screen off and still listen to the sound of the video.
Just tested both right now, and both worked as discribed.
Is there way to do this with Picture In Picture mode as default? Is this a problem with VLC or with Android?
I can't get it to work with screen off if I chose PIP on VLC settings, but it works like I said in my previous post if you chose run in the background.
I'm note sure if the terms I'm using are correct. My VLC is not in English, so I'm translating.

YouTube HDR content

On my Samsung Note 9 and Mate 20 Pro, when viewing HDR content, the phone automatically adjusts to Max brightness for proper viewing. With my Pixel 3, this does not happen and I have to increase the brightness manually to get the full effect. I have adaptive brightness off and I have the YouTube video set to playback at 1080/HDR. Is there anything I'm missing. Can this phone play back HDR properly?
Thanks

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