Grey letterbox on HDR videos - LG G6 Questions and Answers

So I've noticed that when playing HDR videos that that aren't 18:9 on the G6 the letterbox "side bars" on the side of the video are brighter than the black of the video itself, and appear to be gray in comparison.
This happens on all video players I've tested (stock, mx player, plex). The pixels in the bar on the LCD itself are black, but the light behind them is set at a high level, higher than the minimum on the video, causing this grayish bar effect.
Do you also have a similar effect when playing HDR videos? I am not sure if the HDR videos are setting non video lighting to be high, or if its the phone/panel default setting or something. BTW videos are HDR 10 in mkv format.
Do you know of any apps or setting to set non video lighting to be as low as possible? or something of this sort I guess.

Related

[REQ]Tint of display?

Is it possible to change somehow the tint of luminescence display? Make it more warm or cold. Display in my SGS has a very cold shade, a lot of blue. I would like to add a little red to align white.
It's a characteristic of AMOLED screen. As you use it longer, the blue tint will start reducing.
Though that doesn't change the fact that the possibility to change or affect white point and/or gamma of the display would sometimes come quite handy. The color temperature of Galaxy's display is indeed quite high, yet it is so good picture-wise that this becomes an issue (ie. when viewing photos).
Just open any movie with the stock video player. Go to Settings and then Colour Tone. It will affect the whole system.you have 3 options warmer, normal and colder. Hope this will help
Sent from my GT-I9000 using XDA App
That's a great tip, thanks! Even though it's most likely just a bug
So you obviously can alter the display's color temperature system wide somehow. I wonder if this could be made into an app with customizable warmth settings... Too bad I'm not a programmer...
And speaking of the devil...
http://forum.xda-developers.com/showthread.php?t=745248
Case_ said:
That's a great tip, thanks! Even though it's most likely just a bug
So you obviously can alter the display's color temperature system wide somehow. I wonder if this could be made into an app with customizable warmth settings... Too bad I'm not a programmer...
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Where did i you find it? When I play video created by camera in default player I don't see there any setting or color tone setup...
Luiz. said:
Where did i you find it? When I play video created by camera in default player I don't see there any setting or color tone setup...
Click to expand...
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Menu - settings - 3ยบ option
It appears blank on my phone, but leads you to temperature settings
The screen has a blue reflection when off. I also tested it playing the same video on the phone and on my laptop (300 nits LED screen) and the video on the phone was defintely more green-blue.
This is more noticeable on low brightness setting, try it on Kindle app, test settings, you have a slider for brightness. You'll see how low brightness leads to a blue-green tint, not neutral gray.
if some one could could develop an app for the sgs that does this i would pay.
settings menu is only available if you start the videoplayer app and select a video to play within.
if you start a video from the gallery, there is no option
exstarosta said:
Just open any movie with the stock video player. Go to Settings and then Colour Tone. It will affect the whole system.you have 3 options warmer, normal and colder. Hope this will help
Sent from my GT-I9000 using XDA App
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Is the galaxy s i9000 different in this respect from the samsung vibrant. My vibrant does allow me to adjust color tone in the video player, but IT DOES NOT change the color tone of the WHOLE SYSTEM. Once I exit out of the player, everything is back to blue. Also the warm tone in the video player looks fake, just applies red on top of the blue, looks weird.

[Q] Youtube app, built-in auto-brightness?

while i was watching a video on Youtube on my Nexus 7, my connection was lagging so i paused the video to let it load, and the video had a bright white background while someone's in foreground talking. I noticed the brightness went down, and i freaked out thinking it might be my screen. But then i went back to the Android home menu, and i have a live wallpaper called "Rays of Light" which displays different colored lights moving on a dark/black background with little circles floating. I didn't noticed any brightness change, nor during browsing on websites, Google Play, or games...
Now i know Jelly Bean have auto-brightness enabled by default in the system settings, but i turned this off.
I do use MX Player as well, with the brightness set to go slightly up when watching a video, but i know i can turn this off (i just might, as i hate sudden brightness changes)
What i want to know is, does the Youtube app feature auto-brightness? and we just cannot disable it? I did noticed some brightness changes in other videos as well, like when watching a game preview.
For the record, i use Glazed Jelly Bean v2.1
thanks for your replies.

[Q] 1080p wallpaper great in gallery, fuzzier as wallpaper

anyone notice than when setting wallpaper images scaled perfectly to the screen's native resolution, they get a bit fuzzier compared to the view in the gallery????
Here's an example, download this image.....
oops, can't submit links yet. Look for the starry night image at 1080X1920 resolution on google image search. It's a good example.
This is image looks pops really nicely when viewed in the gallery, amazing details and contrast. When set as a wallpaper though, a lot of the sharpness is gone. This happens independently of the screen settings. The same effect happens either with touchwiz or nova launcher, same happens when set with quick pic or stock gallery app. Same effect obviously with different 1080p images besides the one given in the link.
Anyone have any ideas about what's happening here? Kind of a shame cause the display is pretty awesome......We need a fix..
I am running a verizon s4, stock unrooted. I haven't not seen this issue reported as far as I know....
orangelight99 said:
anyone notice than when setting wallpaper images scaled perfectly to the screen's native resolution, they get a bit fuzzier compared to the view in the gallery????
Here's an example, download this image.....
oops, can't submit links yet. Look for the starry night image at 1080X1920 resolution on google image search. It's a good example.
This is image looks pops really nicely when viewed in the gallery, amazing details and contrast. When set as a wallpaper though, a lot of the sharpness is gone. This happens independently of the screen settings. The same effect happens either with touchwiz or nova launcher, same happens when set with quick pic or stock gallery app. Same effect obviously with different 1080p images besides the one given in the link.
Anyone have any ideas about what's happening here? Kind of a shame cause the display is pretty awesome......We need a fix..
I am running a verizon s4, stock unrooted. I haven't not seen this issue reported as far as I know....
Click to expand...
Click to collapse
I have a full HD wallpaper and I viewed it full screen in the gallery and then hit home button to revert to homescreen and I can't notice a change at all. Every pixel is identical to that of the gallery image.
When I hit the home button the only changes are my icons appearing on the background (obviously). but colour, contrast, sharpness etc all stay the same.
I haven't tried with you stary night picture you mentioned though.
Maybe that image just isn't full HD or the pixels are slightly wrong.
Have you opened that same file in Photoshop and double checked?
Or are you just taking Googles word for it beings the right res?
yea, the photo is 1080X1920. I double checked. So are the others I tried.
the effect is definitely not drastic but it is there and I tried a few images. I think the problem is in the loss of fine details most obviously seen in
highres textures or intricate wispy patterns. I've spent many a hour working with high res type images and when these types of jpegs are set as a wallpaper, it's like the images have been run through a couple degrees of a blur filter.
I would think quite a few users would notice though they may not be able to articulate exactly what's going on....it is less stunning imo.....
Me too. The wallpaper seems less clear. Used a 1920x1200 wallpaper.
You have to use an image that is 1920 high and 1080 wide, most 1080p images are 1920 wide and 1080 high instead. So whats happening is when you set the wallpaper, the wallpaper setter has to scale and stretch the image to fit the hight of the screen.
These phones are in portrait mode most of the time remember, where as most images on the web are in landscape wide screen.
I download all my wallpapers using Zedge app. Use Quickpic app to set as wallpaper. No fuzzy issue, the wallpaper looks sharp and crisp.
Sent from my GT-I9505 using xda app-developers app
odisav snyder
yes, the images I am using are in portrait mode, they are not resizing. try using the a highly detailed image and toggle between the gallery view and the homescreen. maybe i am seeing things but i am pretty friggin sure I can't be the only one noticing this.
Try to turn off the automatic display calibation. This option change level of saturation and other display setting depending the app you are running.
orangelight99 said:
yes, the images I am using are in portrait mode, they are not resizing. try using the a highly detailed image and toggle between the gallery view and the homescreen. maybe i am seeing things but i am pretty friggin sure I can't be the only one noticing this.
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Click to collapse
I have always wondered if android lowered the quality of an image when setting it as wallpaper for some pragmatic reason? But have never been able to figure it out.
This has been an issue on every Android device ive ever had - its obviously something at OS level. I use an app called 'Simple Image Wallpaper' it allows you to set an image at 100% quality as it works as a Live Wallpaper. Enjoy!
Use this.
thanks be to the previous 2 posters. I will check out those apps and see if they helped any....
Just want to confirm this issue. Having the same problem.
Looks super sharp and clear in Gallery, becomes blurry when set as Wallpaper.
Resolution is definitely 1080x1920 (W x H)
Issue here as well.
Our LCD resolution is 1920x1080. Wallpaper must be 1920x1920 in order to get a 1 to 1 mapping of wallpaper pixels to screen pixels. This is because our displays switch from landscape to portrait when we turn the phone and so wallpapers are displayed as a 1080x1920 cropping or a 1920x1080 cropping of a 1920x1920 resolution image. If you supply a 1080x1920 image as a wallpaper and the phone needs to display it across 1920x1080 LCD pixels, then it will crop out a 1080x1080 square, use that as a wallpaper, stretching 1080 image pixels across 1920 lcd pixels. This may sound strange, but it really does make sense as a solution to solve the problem of how to display wallpaper when the screen can be rotated. Ever notice that the stock ROM wallpapers are square, 1920x1920?
Sent from my SGH-M919 using xda app-developers app
gruuvin said:
Our LCD resolution is 1920x1080. Wallpaper must be 1920x1920 in order to get a 1 to 1 mapping of wallpaper pixels to screen pixels. This is because our displays switch from landscape to portrait when we turn the phone and so wallpapers are displayed as a 1080x1920 cropping or a 1920x1080 cropping of a 1920x1920 resolution image. If you supply a 1080x1920 image as a wallpaper and the phone needs to display it across 1920x1080 LCD pixels, then it will crop out a 1080x1080 square, use that as a wallpaper, stretching 1080 image pixels across 1920 lcd pixels. This may sound strange, but it really does make sense as a solution to solve the problem of how to display wallpaper when the screen can be rotated. Ever notice that the stock ROM wallpapers are square, 1920x1920?
Sent from my SGH-M919 using xda app-developers app
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This makes perfect sense. Do u have any good sources for 1920x1920 size wallpaper? Much Thanks :good:
interfacelift.com/wallpaper/
Is one of my favorites for very hi-res photos. You could just google wallpaper.
You will need to use a photo cropping tool (like paint or photoshop or gimp) to crop or resample to desired size.
Sent from my SGH-M919 using xda app-developers app

How to make full screen videos stretch to fit screen on other full screen apps?

I only see this on Youtube but not on Chrome or any other browser that displays full screen video.
Would like to know this. Tired of the video being cropped and cut off. Sometimes in YouTube I get an automatic adjustment other times I have to manually crop the video.
https://forum.xda-developers.com/galaxy-s8/help/render-video-to-fit-note-8-s8-screen-t3663676

Wider field of view in record

I've turned off video stabilization.
When I record a video from the photo mode (ultra wide) by long pressing the shutter button, it seems to record in a wider field of view with a resolution of 1920 x 1440.
When I head into video mode and try any resolution, it's not as wide.
Any reason behind this? Anyway that I can get this field of view by default in video instead of going through photo mode shortcut?
Thanks
Welll .. in video mode it is croping in the center for 4k resolution (about 8MP of 12MP of the sensor) and for 16:9 aspect ratio.
When you keep your finger on the shutter in photo mode, it uses the entire senzor downscaled to FHD+ resolution with 4:3 aspect ratio.
(16:9 -> 1920:1080)
(4:3 -> 1920:1440)
This is how also camera makers are "cheating" sometimes as well ...
For example, Canon's 4k has the same issue .. it is having a crop, compared with FullHD.
You can try the following tests on your device:
1. Put it in exactly the same place for all the tests.
2. Switch in settings to FullHD resolution for back cameras
3. Do a :
- photo in ultrawide
- keep on shutter button in photo mode in ultra wide
- go to video ultrawide (FHD) and record a video
4. Do the same, but in 4k for back video
5. Compare the videos, and you will see the crop in 4k, but not that big in FullHD.
All 3 video from step 3 will have the same width of the frame .. only the video done in video mode will be missing some parts on the lower and top side, as it is cropped to 16:9.
4k video from step 4 will be cropped as it is doing a real 4k readout in the center of the sensor.
I hope this helps you.
rhadoo_ds said:
Welll .. in video mode it is croping in the center for 4k resolution (about 8MP of 12MP of the sensor) and for 16:9 aspect ratio.
When you keep your finger on the shutter in photo mode, it uses the entire senzor downscaled to FHD+ resolution with 4:3 aspect ratio.
(16:9 -> 1920:1080)
(4:3 -> 1920:1440)
This is how also camera makers are "cheating" sometimes as well ...
For example, Canon's 4k has the same issue .. it is having a crop, compared with FullHD.
You can try the following tests on your device:
1. Put it in exactly the same place for all the tests.
2. Switch in settings to FullHD resolution for back cameras
3. Do a :
- photo in ultrawide
- keep on shutter button in photo mode in ultra wide
- go to video ultrawide (FHD) and record a video
4. Do the same, but in 4k for back video
5. Compare the videos, and you will see the crop in 4k, but not that big in FullHD.
All 3 video from step 3 will have the same width of the frame .. only the video done in video mode will be missing some parts on the lower and top side, as it is cropped to 16:9.
4k video from step 4 will be cropped as it is doing a real 4k readout in the center of the sensor.
I hope this helps you.
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Yes! Sure helps and makes sense. Thank you for a simple and detailed explanation.

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