So when using the Slimport adapter with the Nexus 7, the 1920x1200 16:10 image is scaled down to a 1728x1080 16:10 image.
The 1728x1080 image is displayed on a 1080p 16:9 TV with black "pillars" on the left and right sides.
For me, this is completely undesirable.
I am hoping that there is a custom rom out there that offers more slimport output options.
Such as:
-Changing the Android workspace to 1920x1080. Letter boxing on the tablet and pixel perfect on the TV.
-Changing the Android workspace to 1920x1080. Vertical stretching on the tablet and pixel perfect on the TV.
-Retaining the Android workspace at 1200p. Vertically squashing the TV image to 16:9 for a 1080p image with distorted aspect ratio with no black bars. (distorted AR can be reversed with many Video player apps and Picture viewer apps).
Any of those is more desirable to a 1728x1080p pillar boxed output. Any help on the issue would be greatly apreciated.
I've posted a feature request on google groups, asking them to consider adding more output resolution options to Android. http://productforums.google.com/forum/?hl=en+#!category-topic/mobile/android-devices/cgKZEwu4CZg
Downscaling 1920x1200 to 1728x1080 involves un-even averaging of pixels on both the horizontal and vertical. Out of the many other ptotential options for display output, this has to be the worst.
I agree with you guys, there should be a better solution.
I have a 1920x1200 monitor, which is perfect for 1:1 direct output, but the N7 2013 still output at 1728x1080. It does not look good, especially when watching videos. The downsizing also causes a visible performance drop, there is a slight lag when interacting with the UI.
Found this while having the same issues:
http://forum.xda-developers.com/showpost.php?p=45005807&postcount=25
CooperC said:
Found this while having the same issues:
http://forum.xda-developers.com/showpost.php?p=45005807&postcount=25
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Click to collapse
Awesome, thanks!
I am unsure if this thread belongs here. Kindly let me know if it doesn't or please move it.
I was wondering if the TAB S7/S7+ would let me play YouTube videos on 4K using the native app but unfortunately it doesn't for obvious reasons using stock settings.
So I figured a way to enable this using ADB. I am unsure how much this affects the battery life since I am still testing app compatibility and power usage.
ADB Commands
1. To set 4K resolution -
adb shell wm size 2400x3840
adb shell wm density 1024 (or whatever suits your eyes, mine is 1200)
2. To reset to default -
adb shell wm size reset
adb shell wm density reset
So if anyone's interested all you have to do is -
1. Download minimal ADB and install it if you do not have ADB installed.
2. Open Command Prompt in the ADB folder by pressing Shift Key and selecting the Right Click option "Open command prompt here".
3. Run "ADB devices" without quotes and accept the prompt on your device (Your device must have USB debugging enabled, if you don't know how or have it enabled you probably shouldn't be doing this).
4. Run the above "To set 4K" commands to set the display resolution to 4k.
5. Clear the app data of Youtube and restart the device.
6. (Optional/Reset) To reset the display resolution to default, just run the 2nd set of commands.
Not sure this is actually making the screen dislay 4k.
It doesn't actually MAKE your screen 4k as the display only supports 2k. The device renders everything in 4k and then outputs it on the display just like what Retina Displays or Nvidia DSR (Dynamic Super Resolution) does.
Just in case you want to actually make sure everything is running in 4k, you can simply try running a 4k video on Youtube which otherwise you cant!
Stryker_Echo9er said:
It doesn't actually MAKE your screen 4k as the display only supports 2k. The device renders everything in 4k and then outputs it on the display just like what Retina Displays or Nvidia DSR (Dynamic Super Resolution) does.
Just in case you want to actually make sure everything is running in 4k, you can simply try running a 4k video on Youtube which otherwise you cant!
Click to expand...
Click to collapse
Right, so what's the point? The 4k video doesn't look better on a 2k screen.
Since DSR and Retina Displays already exist, I believe there are some advantages. You have to try it to believe it. The displays feel a lot sharper, edges feel smoother, fonts look amazing, overall it just looks good on the huge display of my Tab s7+.
Coming back to that I need to ask you, did you try this before asking me the POINT. Coz I feel if you would have, you wouldn't be asking me this!
Stryker_Echo9er said:
Since DSR and Retina Displays already exist, I believe there are some advantages. You have to try it to believe it. The displays feel a lot sharper, edges feel smoother, fonts look amazing, overall it just looks good on the huge display of my Tab s7+.
Coming back to that I need to ask you, did you try this before asking me the POINT. Coz I feel if you would have, you wouldn't be asking me this!
Click to expand...
Click to collapse
Yes, I did, and it looks no different. It's a 2k screen, enabling something to load a 2k screen with 4k will make no difference. Not trying to argue, just saying, it's pointless.
I accept it doesn't make any greatly significant difference but then its subjective. It was just an experiment and I wanted to try it. There are many people out there who always want to run youtube at 4k, this was simply my answer to that problem, although it has its own downside and implications.
Thanks for figuring this out! Often 4k will look better on a 2k screen than 2k on a 2k screen.
This is because pixels from youtube don't always line up perfectly to the tablet pixels and you end up with a resolution less than 2k when you have it set to 2k. When you stream at 4k from youtube, the content is delivered with smaller pixels and ends up looking better on a 2k display.
Thanks for this going to give it a try on my 7 plus.
it worked now i get the option to 2160 resolution, it does look sharper.
good work thanks very simple
Hey
When i use the command "densiti" my screen become wery BIG otherwise the "size" resolution is great
is that normal ??
There's also Newpipe to get 4K Youtube without hacking. As a bonus, it also gets rid of the ads.
Does this work on Netflix? Will the maximum resolution on netflix and prime video change to uhd?
What the Implications and Downsides to this?
bs3pro said:
Right, so what's the point? The 4k video doesn't look better on a 2k screen.
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Click to collapse
The point is higher bitrate. Youtube compresses videos so much so 4k will have a much higher bitrate than 1440p and look better.
Btw, use youtube vanced for 4k but use sparingly as it blocks ads. I wouldn't suggest using it very often because it doesn't support creators
What about on Samsung Dex or any kindof screen mirroring on external monitors? Any way to get the S7+ to send more than 1440p to an external monitor through any means?
For instance if you set the resolution to 4k with ADB, and then you mirror your display via a [email protected] usb-c / hdmi cable to your 4k screen, will the screen receive a 4k signal?
Can anyone (Stryker_Echo9er) try that?
jdoggawesomex900 said:
Btw, use youtube vanced for 4k but use sparingly as it blocks ads. I wouldn't suggest using it very often because it doesn't support creators
Click to expand...
Click to collapse
If you have unlimited data and an old device lying around (all it has to be able to do is run the official Youtube app), you can leave the video playing on that device with ads while you watch on your S7 or whatever without ads. Best of both worlds, the only extra you pay is that little bit of electricity to run the other device.
YouTube now natively supports 4K HDR.
Now you can watch high quality 4K YouTube videos on Android phones
Support for 4K HDR playback was only there for iPhone users while Android smartphone users were only able to play YouTube videos at a maximum resolution of 1440 pixels.
www.gadgetsnow.com
Twodordan said:
What about on Samsung Dex or any kindof screen mirroring on external monitors? Any way to get the S7+ to send more than 1440p to an external monitor through any means?
For instance if you set the resolution to 4k with ADB, and then you mirror your display via a [email protected] usb-c / hdmi cable to your 4k screen, will the screen receive a 4k signal?
Can anyone (Stryker_Echo9er) try that?
Click to expand...
Click to collapse
I tried doing that on my 8-series Samsung TV, unfortunately, it doesn't work on my TV via USB-C (using an HDMI Dongle) or screen mirroring. I am not sure if it would work on displays with a type-c port.
Stryker_Echo9er said:
I tried doing that on my 8-series Samsung TV, unfortunately, it doesn't work on my TV via USB-C (using an HDMI Dongle) or screen mirroring. I am not sure if it would work on displays with a type-c port.
Click to expand...
Click to collapse
Thanks for trying. But do you mean that it doesn't work at all, as in you can't use dex on your TV? Or does it mean it just doesn't do 4k?
Hi guys, I've tried to watch some movies with HDR (1080 and UHD movies) but the image is really really dark even on max brightness level in a dark room; I've tried both Plex and MX Player Pro but still nothing, even the HDR videos on YouTube are very dark.
Also I am sure that the HDR of the video works correctly because on a samsung galaxy s10 it works perfectly and I can see it very well.
Here is a comparison to show you the difference indicatively (S10 VS Mi Pad 5): Imgur Comparisons
Does this happen to you too?
My tablet: International Xiaomi Pad 5 with MIUI 12.5 (12.5.8.0 Stable)
different display, different hdr format. s10 use hdr10+ with a amoled screen so def better than ips panel with standard hdr10.
different display, different hdr format. s10 use hdr10+ with a amoled screen so def better than ips panel with standard hdr10.
Click to expand...
Click to collapse
It's not a question of better or worse panel, here with the mi pad 5 the HDR does not work completely.
It is sold as HDR10 & Dolby Vision certified but then they don't work at all; I've also seen a user on reddit report the exact same thing so I'm starting to think it's a software problem...
Filippo255 said:
It's not a question of better or worse panel, here with the mi pad 5 the HDR does not work completely.
It is sold as HDR10 & Dolby Vision certified but then they don't work at all; I've also seen a user on reddit report the exact same thing so I'm starting to think it's a software problem...
Click to expand...
Click to collapse
when you open hdr video, if it's too dark, yes, that's because hdr is working, but ips panel is not really good at dark color so that's the problem.
I also subscribe to this issue, I own the Non-Pro and HDR videos are way too dark, some movies on Netflix are almost impossible to watch despite cracking the brightness up manually (it makes the subtitle too bright compared to actual video).
I hope Xiaomi will implement a fix in future updates.
Also, when playing Dolby Vision files, the aspect ratio is something bad such as 20:9 (actual videos are played in some ultra-wide aspect ratio), the actual dark frames on top and bottom eat 50% of the vertical space, this is also a bug.
If I knew the software is that bad I would had gone with Samsung tablet instead.
@OP is not wrong at all, this is a software issue, the screen is bright enough for HDR content but the software is lacking.
Bug has been reported on a lot of forums, including here :
https://www.reddit.com/r/PleX/comments/rofr22
icsterm said:
I also subscribe to this issue, I own the Non-Pro and HDR videos are way too dark, some movies on Netflix are almost impossible to watch despite cracking the brightness up manually (it makes the subtitle too bright compared to actual video).
I hope Xiaomi will implement a fix in future updates.
Also, when playing Dolby Vision files, the aspect ratio is something bad such as 20:9 (actual videos are played in some ultra-wide aspect ratio), the actual dark frames on top and bottom eat 50% of the vertical space, this is also a bug.
If I knew the software is that bad I would had gone with Samsung tablet instead.
@OP is not wrong at all, this is a software issue, the screen is bright enough for HDR content but the software is lacking.
Click to expand...
Click to collapse
Thanks for confirming my theory, it needs a bug fix otherwise so the device is really unusable for HDR content.
Have you also reported this to Xiaomi hoping that it will solve as soon as possible?
The problem is that hdr videos are made for really bright screens (hdr10 1000nits, hdr10+ 4000nits, DV up to 10tsd nits). Now on TVs this is normally not a problem because the TVs know what there max. brightness is and they can adjust the brightness of the movies. The tablet itself does also know the max. brightness but the Netflix or whatever player does not (or at least it does not work). What you can do is, use a player like mpv, and set the target-peak or, which i would not recommend, set the video brightness. Sadly, once again, the users who pay and watch movies legally are the ****ed once.
Its a night and day difference.
Filippo255 said:
Have you also reported this to Xiaomi hoping that it will solve as soon as possible?
Click to expand...
Click to collapse
Did you used the feedback app that they include in the actual ROM? Or on a website?
icsterm said:
I also subscribe to this issue, I own the Non-Pro and HDR videos are way too dark, some movies on Netflix are almost impossible to watch despite cracking the brightness up manually (it makes the subtitle too bright compared to actual video).
I hope Xiaomi will implement a fix in future updates.
Also, when playing Dolby Vision files, the aspect ratio is something bad such as 20:9 (actual videos are played in some ultra-wide aspect ratio), the actual dark frames on top and bottom eat 50% of the vertical space, this is also a bug.
If I knew the software is that bad I would had gone with Samsung tablet instead.
@OP is not wrong at all, this is a software issue, the screen is bright enough for HDR content but the software is lacking.
Bug has been reported on a lot of forums, including here :
https://www.reddit.com/r/PleX/comments/rofr22
Click to expand...
Click to collapse
I noticed that the "standard" display mode was way better for me than Vivid on Netflix. I can see dark scenes way better with it
manu_jedi said:
The problem is that hdr videos are made for really bright screens (hdr10 1000nits, hdr10+ 4000nits, DV up to 10tsd nits).
Click to expand...
Click to collapse
By your logic, DV must be completely black but instead, it's the only HDR that works on Pad5.
icsterm said:
Also, when playing Dolby Vision files, the aspect ratio is something bad such as 20:9 (actual videos are played in some ultra-wide aspect ratio), the actual dark frames on top and bottom eat 50% of the vertical space, this is also a bug.
Click to expand...
Click to collapse
This is a "just player" bug, use mpv.
Critical Hit said:
By your logic, DV must be completely black but instead, it's the only HDR that works on Pad5.
Click to expand...
Click to collapse
No, bad wording. It is made for screens up to ...nits. Now when you want to display it on a screen, not as bright, you need to map the colors to a lower brightness. And you don't wan't to simply cut it off on the dark or bright side. But you can tweak the mapping and the default players are really bad at it. Also i have no clue why DV should be the only one working.
Critical Hit said:
This is a "just player" bug, use mpv.
Click to expand...
Click to collapse
I also highly doubt that mpv fixes anything. It uses the same HW decoding than any other player for DV or if it uses the SW decoder the colors will not be correct. Here is the issue: https://github.com/mpv-player/mpv/issues/7326
You don't understand. DV _and_ hdr10 should work, but right now it's only DV and only with mpv and JP. The image is dark but not too dark as with hdr10. Just Player has a bug with black bars (it's not the aspect ratio because the image is cut on top and bottom.), not colors.
Critical Hit said:
You don't understand. DV _and_ hdr10 should work, but right now it's only DV and only with mpv and JP. The image is dark but not too dark as with hdr10. Just Player has a bug with black bars (it's not the aspect ratio because the image is cut on top and bottom.), not colors.
Click to expand...
Click to collapse
I don't wan't so sound rude but mpv just does not support DV. IF mpv playes your DV files i would be highly interessted in those files. I can imagine that you have some hdr10 compatible DV files? These will play in mpv just like hdr10 files. You can check with mediainfo and look for the HDR format string. E.g Lotr DV BD would be :
Dolby Vision, Version 1.0, dvhe.07.06, BL+EL+RPU, Blu-ray compatible / SM PTE ST 2086, HDR10 compatible"
you can also see the mastering brightness here
Mastering display luminance : min: 0.0050 cd/m2,m ax: 4000 cd/m2
Also the cropping for files happens on all DV files (that i could find). All of these players have in common that they use the HW decoding for DV and afaik there are no DV players which do not use HW
manu_jedi said:
These will play in mpv just like hdr10 files.
Click to expand...
Click to collapse
Ok, it looks like you're right but results are still completely inconsistent.
manu_jedi said:
Mastering display luminance
Click to expand...
Click to collapse
Maybe this is the problem. But I can't get this info in MI.
This sample has this mediainfo:
Dolby Vision, Version 1.0, dvhe.05.06, BL+RPU
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Click to collapse
JP plays it perfectly (or ok) without cropping problem and mpv has broken colors (so it really can't play DV).
Sample
Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible
Click to expand...
Click to collapse
Just Player plays it perfectly but has the cropping problem. With mpv picture is completely broken and with VLC&MXP it's ok (not too dark).
Sample
Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2086, HDR10 compatible
Click to expand...
Click to collapse
JP has cropping&brightness problems, mpv doesn't. But it looks like mpv is using tone mapping (?) - if you pause the file in VLC and tilt the pad the image would be the same as in mpv.
IMO this is a limitation with the physical screen itself, the fact is pad 5 only had a peak brightness of around 500, 478 nits iirc. Trying to play HDR content on a 478 peak brightness screen is impossible without doing some sort down- "tone mapping" which if it does, it's not HDR anymore, just capable of displaying HDR video. (the S10 iirc has 1000 nits max brightness and can peak to 1200 when required on a short time, that;s why the dark part is clear there).
on a 478 nits screen, even if you crank the brightness as high as it could, the dark part of the video is probably too crammed together, thus you're seeing a crushed black on HDR videos, where the dark part actually blends into a blob instead of just being really dark with some sort of defining shape clarity. The only solution is to change the tone mapping to SDR (BT.709 color space) either by transcoding the video itself or use a player with a tone mapping function (which if exist only useful for video files and not streaming services).
Etmors said:
(the S10 iirc has 1000 nits max brightness and can peak to 1200 when required on a short time, that;s why the dark part is clear there).
Click to expand...
Click to collapse
You talking about marketing numbers. Here is a test of S21 https://www.gsmarena.com/samsung_galaxy_s21-review-2218p3.php 416 to 856 nits. https://www.gsmarena.com/xiaomi_pad_5-review-2317p3.php pad5 has 478 nits and they guessing there can be more "Unfortunately, there is no Sunlight Boost even if the settings page suggests that. Maybe it will be enabled with a future firmware update, maybe not. Still tablet can be much brighter when watching HDR content, of course,". Iirc there was a review with 500+ nits max test with this Boost.
And the question is why there is only one player that can show you decent results with dv&hdr10 but has a cropping bug? Why Xiaomi with these hardware specs marketing it as compatible when even their own player can't play this content with decent results?
Updated to miui13 and it looks like the cropping problem on Just Player is gone.
Critical Hit said:
You talking about marketing numbers. Here is a test of S21 https://www.gsmarena.com/samsung_galaxy_s21-review-2218p3.php 416 to 856 nits. https://www.gsmarena.com/xiaomi_pad_5-review-2317p3.php pad5 has 478 nits and they guessing there can be more "Unfortunately, there is no Sunlight Boost even if the settings page suggests that. Maybe it will be enabled with a future firmware update, maybe not. Still tablet can be much brighter when watching HDR content, of course,". Iirc there was a review with 500+ nits max test with this Boost.
And the question is why there is only one player that can show you decent results with dv&hdr10 but has a cropping bug? Why Xiaomi with these hardware specs marketing it as compatible when even their own player can't play this content with decent results?
Click to expand...
Click to collapse
I will refer to displaymate, while 400-800 nits are brightness in manual mode, when used in automatic brightness at high ambient light it could bring up to 900 nits for 50% apl, and 1200+ nits for 1% (which is probably where the 1300 nits marketing came from, while 1% APL is practically useless it's not entirely false either).
I did once owned an S10, and when you play HDR content, the screen will enter that automatic brightness mode, as it does becomes really-really bright, as if I was using it outdoor (high ambient light). So I would assume when comparing HDR vs HDR then the S10 probably should be assumed operated at 800-900 nits. Playing SDR content, you can't achieve the same brightness when playing HDR. I can't comment on s21 since i don't owned one, and can't tell if this automatic brightness thing still exist.
This is the same issue with HDR400, while by specification it is HDR, it sucks. And pad 5 being "Support Dolby Vision" is not equal to a brilliant dolby vision experience, it could be just technicalities that means that it could receive dolby Vision Input.
HDR10 contents usually are mastered at 1000-4000 nits, (I would assume DV is around that or bit higher). HDR TVs are usually only start to have good HDR experience from 600 nits or more, 1000 nits preferable. So I really can't complain if I don't get the same experience with seeing HDR10/DV on a 1000 nits TVs.
OTOH I do agree that there's also a software issues because the inconsistencies I've also experience, like when playing HDR content, even when i pump the brightness to full, it felt like it is not as bright as playing SDR at full brightness. And playing HDR10 in youtube is usually just fine (idk if youtube tone-mapped the HDR), only when playing hdr10 video files or streaming service like netflix/prime that the issue exist.
The only thing I wish it had is a turn off HDR switch or tone-mapping enable switch. Like most dark scene on netflix with DV are unviewable in this device, because it's way too dark, and I'd just rather see the SDR version.
Etmors said:
The only thing I wish it had is a turn off HDR switch or tone-mapping enable switch. Like most dark scene on netflix with DV are unviewable in this device, because it's way too dark, and I'd just rather see the SDR version
Click to expand...
Click to collapse
Youtube app doesn't do tone mapping but you can manually set quality to SDR in the smartube app.
With files (or netflix), if it's too dark, you can set the color scheme to "standard" but the image would be low saturated or use built-in brightness&contrast settings in mpv (+10 both is good).
Tone mapping is an app feature not global, so until Netflix does something you can't do much. Only fake the hardware id/specs that it can't support HDR (idk if it's possible).
Just some more info on mpv with hdr (all for normal hdr, no DV):
Use this if you want to use the hardware decoding that normal player use (like the integrated video player):
vo=mediacodec_embed
hwdec=mediacodec
wid=(intptr_t)(*android.view.Surface)
this will directly use HW decoding and present the result on the screen.
Use the following if you want more details in dark scenes (i think this are the default settings):
hwdec=mediacodec-copy
gpu-context=android
I don't know exactly what mpv uses internally here but the main idea is to use the HW decoding, copy the image back to memory, do some post processing and present it on the screen
What i like to use:
hwdec=mediacodec-copy
gpu-context=android
hdr-compute-peak=yes
tone-mapping=hable
Mostly the same, but not as aggressive in my opinion (only personal preference).
more to read: https://mpv.io/manual/stable/#options-tone-mapping