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+--- Thread: Android nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 (/showthread.php?tid=304226)
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RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - docwra - 2018-12-23
(2018-12-22, 21:38)mylle Wrote: Does it survive a reboot?Yep seems to although you need to press the remote button a couple of times to wake up the shield for some reason. But it's worked for 3 days now since changing the option.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - Livin - 2018-12-23
Looking to switch from Win10 to Shield. Need somse info please
1. down scaling 4K content to run on 1080p display... working properly?
2. Pass though of Dolby TrueHD & DTS-MA .. working properly?
3. I use a projector through a Denon AVR... Will the NVidia allow when I turn on AVR & Projector, Kodi is onscreen instantly? (no need to navigate and open Kodi every time after a startup of the AVR/Projector?)
... Win10 PC is has major problems when the HDMI signal goes away. Resolution goes nuts and app on screen goes into a crunched window even though the desktop is fine. Thus I must close Kodi (still responds to keystrokes) and restart it to take full screen again at 1080p res.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - Hitcher - 2018-12-24
@noggin any update on your 709/2020 checks?
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - noggin - 2018-12-24
(2018-12-24, 00:01)Hitcher Wrote: @noggin any update on your 709/2020 checks?Finally got a chance now I'm back home.
No obvious automatic Rec.709/2020 switching within either Kodi or any Android TV apps like BBC iPlayer. (Similarly no automatic frame rate switching outside Kodi either)
With the Shield TV configured for 2020 output, my HD Fury reported 2020 for all playback. Rec.709 content (all SDR) was mapped into SDR Rec.2020 pretty well, but I know YMMV depending on your TV's handling of Rec.2020 SDR. That said there is quite a lot of SDR Rec.2020 like 'The Crown' on Netflix... (So SDR Rec 2020 should be handled properly by TVs)
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - wrxtasy - 2018-12-24
edit: damn spelling...
(2018-12-24, 01:11)noggin Wrote: (So SDR Rec 2020 should be handled properly by TVs)
And that is the most important point of the whole Shield colorspace issue, discussed all year.
- should -
The question is why is NVIDIA the odd man out having so many problem with an increasing list of 4K HDR TV's vs everyone else ?
Have they trusted Google's color conversion algorithms in the Oreo OS too much without properly real world testing with various leading brand 4K HDR TV's ?
Seriously why do Android device manufacturers seemingly treat their users as ongoing test Guinea pigs with every OS update.
Introducing a complicated to get right - Major Linux Kernel update just before the biggest family gathering & Holiday period of the year has me shaking my head in disbelief.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - noggin - 2018-12-24
(2018-12-24, 03:12)wrxtasy Wrote: edit: damn spelling...
(2018-12-24, 01:11)noggin Wrote: (So SDR Rec 2020 should be handled properly by TVs)
And that is the most important point of the whole Shield colorspace issue, discussed all year.
- should -
The question is why is NVIDIA the odd man out having so many problem with an increasing list of 4K HDR TV's vs everyone else ?
Have they trusted Google's color conversion algorithms in the Oreo OS too much without properly real world testing with various leading brand 4K HDR TV's ?
Seriously why do Android device manufacturers seemingly treat their users as ongoing test Guinea pigs with every OS update.
Introducing a complicated to get right - Major Linux Kernel update just before the biggest family gathering & Holiday period of the year has me shaking my head in disbelief.
@wesk05 has tested the Rec 709 to Rec 2020 conversion that nVidia is using and has confirmed it is what you would expect. This - AIUI - should mean that the output of the nVidia Shield when in Rec 2020 mode should be a standard, just as you would expect, Rec 2020 SDR signal. I don't think there is any suggestion that this has changed is there? I'm not seeing any gamut switching that a couple of other people reported was happening. In my case - there is no gamut switching taking place, it's still gamut conversion.
People are saying that their experience of this Rec 709 to Rec 2020 conversion on their TVs isn't the same as seeing a Rec 709 native signal fed to their displays. This suggests that the way their TV is handling Rec 709 SDR and Rec 2020 SDR content isn't the same (could it be Rec 709 is being handled as a 2.2 or 2.4 power-law gamma and Rec 2020 as BT.1886?).
This should also suggest that these TV owners will also not be happy watching Netflix SDR Rec 2020 content like The Crown, 1983 etc.?
On my Sony UHD TV set - Rec 709 content output as SDR Rec 2020 by my nVidia Shield TV looks perfectly watchable. If I get a chance I may run the same Rec 709 test signals through as Rec 709 and Rec 2020 and see what my calibration probe reports as the differences (I'm hoping to spend some time properly calibrating my Sony TV this Christmas)
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - FoxADRIANO - 2018-12-27
In your opinion if I choose "4K 59,94 Hz (recommended) what could happen to my videos? I remember my videos are PAL system, rec.709, 50p, 8bit.
What could change?
I'm asking it because I got another bad adventure with Shield TV. I don't want to tell it so as not to be extremely boring.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - noggin - 2018-12-27
(2018-12-27, 00:42)FoxADRIANO Wrote: In your opinion if I choose "4K 59,94 Hz (recommended) what could happen to my videos? I remember my videos are PAL system, rec.709, 50p, 8bit.
What could change?
I'm asking it because I got another bad adventure with Shield TV. I don't want to tell it so as not to be extremely boring.
Playing 50Hz content at 59.94Hz will give you motion judder (as almost every 5th frame will be shown twice to get from 50Hz to 59.94Hz). However if you have Kodi refresh rate switching (and Whitelisting if running Leia) correctly configured the refresh rate isn't an issue as it will be changed by Kodi. Even if you have 3840x2160 59.94Hz 8-bit output - Kodi will switch this to 3840x2160 50Hz 8-bit when you play 50Hz content if Kodi is configured correctly. (You will see your TV re-sync if this happens - i.e. the display will go blank and your OSD will probably flash up with a format indicator)
However the recommended screen mode option is in the basic Display and Sound settings not the advanced ones, and may ignore Rec 709 vs Rec 2020 issues. (I suspect it will default to Rec 2020)
As you have been advised before you are best off with a 4K Rec 709 50Hz output if you aren't playing any Rec 2020 content.
I'd chose one of the following :
3840x2160 50Hz in
- RGB 8-bit Rec 709
- YUV 420 10-bit Rec 709
- YUV 420 8-bit Rec 709
- YUV 422 12-bit Rec 709
- YUV 444 8-bit Rec 709.
(These are the 38340x2160 50Hz modes I am offered by my Shield TV on my TV)
In a new set-up with unknown cables I'd try the 3840x2160 50Hz YUV 420 8-bit Rec 709 mode first, then the YUV 444 8-bit Rec 709 mode, and then the RGB 444 8-bit Rec 709 mode. The latter two will potentially render UI elements better (as they have full resolution chroma, whereas 4:2:0 has quarter resolution chroma), but your source content is 4:2:0 - so the differences shouldn't be apparent when playing back. There should be no visible difference between RGB and YUV I'd hope - but you never know.
The YUV 420 8-bit mode will be the one that takes the least HDMI bandwidth and will work with HDMI 1.4 spec cables (as it is in the HDMI 1.4 bandwidth range)
The YUV 422 12-bit mode is the only 50/59.94/60Hz 422 mode UHD supported by HDMI 2 connections (there are no 8 or 10 bit options for 422)
The YUV 444 and RGB modes are full chroma bandwidth (where the colour information is the same resolution as the luminance) but they are only ever supported at 8-bits at UHD 50/59.94/60Hz
RGB = Equal bandwidth RGB
444 = Equal bandwidth YCbCr output (Y=Luminance, Cb and Cr are colour difference signals)
422 = Half resolution chroma horizontally, full resolution vertically (i.e. half chroma resolution)
420 = Half resolution chroma horizontal, half resolution vertically (i.e. quarter chroma resolution)
420 YCbCr is the standard encoding used for consumer file-based content - DVD, Blu-ray, DVB/ATSC TV and is the only native format that usually gets hardware acceleration in MPEG2, H264, H265 and VC1 codecs.
422 YCbCr is the standard encoding used for professional file-based content for mastering (444 or a RAW format is sometimes used for shooting though) However 422 is usually only software decoded on consumer platforms so isn't recommended as a file standard for content played back on consumer devices.
Playing back 4:2:0 content over a 4:2:0 HDMI connection shouldn't give you massive compromises, however it is entirely possible that internally within the Shield TV it has been converted from 4:2:0->4:2:2 or 4:4:4 YCbCr and then converted back to 4:2:0 for output over HDMI, for your TV then to convert it to (4:4:4) RGB for display.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - FoxADRIANO - 2018-12-27
I summarize my problem I got some days ago.
I'm sorry if I disturb you again. I'm continuing to get problems with SHIELD TV. Even wuth the second new Shield TV I'm getting the same problems. I remember you I have Sony Bravia TV 65". I always watched my UHD videos I make with my GH5 camera. It shoots UHD rec.709. I always used Kodi with my TV and I always watched them without any problem. Everything was perfect. Then I liked to increase the bitrate on my files and my TV read them enough well with excellent colors but the TV suffered with that bitrate and the video was not perfectly fluid. Therefore I had the unhealthy idea to buy a new and good device to play those heavier files (150Mbps). From that time I got a drama and even today it sends me into a beast. I lost a lot of sleep for Shield TV without solving my biggest problems. Now don't tell that my Shield TV is badly configured because it is configured perfectly. Here is my biggest problem: Shield TV sometimes reads my files enough well and I get good colours (even if I'm dissatisfied with the Shield TV colors). But sometimes it gives languid and overexposed colors. My new Shield TV was configured 3840x2160 50Hz and RGB 8-bit Rec 709. Colours were enough good and I was enough happy. Some days ago I invited some friends of mine at home to watch together my latest documentary. I got a big problem. Colors were faded and overexposed.
I was ashamed to show that documentary with bad colours. I thought of having solved the problem with the new Shield TV but I made an error. Shield works so badly with my UHD documentaries and my TV. Now I have to remove the Shield TV if I need to be calm because it's me that's going to look bad. I will lower the bitrate in order to watch my documentaries with Kodi and my TV. I only regret one thing: I spent my money for nothing.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - Klojum - 2018-12-27
Nvidia updated the ShieldTV to 7.2.1 since a few days, it's possible they changed (or borked) something in the colors department.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - noggin - 2018-12-27
(2018-12-27, 15:10)FoxADRIANO Wrote: I summarize my problem I got some days ago.Yes - I have a Sony UHD TV too - 49XF9005. (49" size as I live in a small flat in London!)
I'm sorry if I disturb you again. I'm continuing to get problems with SHIELD TV. Even wuth the second new Shield TV I'm getting the same problems. I remember you I have Sony Bravia TV 65".
Quote:I always watched my UHD videos I make with my GH5 camera. It shoots UHD rec.709. I always used Kodi with my TV and I always watched them without any problem. Everything was perfect. Then I liked to increase the bitrate on my files and my TV read them enough well with excellent colors but the TV suffered with that bitrate and the video was not perfectly fluid. Therefore I had the unhealthy idea to buy a new and good device to play those heavier files (150Mbps).
As I have said before - 150Mbs is a very high bitrate, particularly for H.264 video (which was the codec you said you used). You would be better off using a codec like H.265 at a lower bitrate (H.265 delivers the same quality as H.264 at lower bitrates)
H.264 is not a great choice for UHD content - H.265 is a much better choice. Broadcast UHD 2160p50 H.265 is running at between 25 and 45Mbs. UHD Blu-rays at 2160p24 H.265 are seldom going much over 100Mbs.
Quote:From that time I got a drama and even today it sends me into a beast. I lost a lot of sleep for Shield TV without solving my biggest problems. Now don't tell that my Shield TV is badly configured because it is configured perfectly. Here is my biggest problem: Shield TV sometimes reads my files enough well and I get good colours (even if I'm dissatisfied with the Shield TV colors). But sometimes it gives languid and overexposed colors. My new Shield TV was configured 3840x2160 50Hz and RGB 8-bit Rec 709. Colours were enough good and I was enough happy. Some days ago I invited some friends of mine at home to watch together my latest documentary. I got a big problem. Colors were faded and overexposed.
I was ashamed to show that documentary with bad colours. I thought of having solved the problem with the new Shield TV but I made an error. Shield works so badly with my UHD documentaries and my TV. Now I have to remove the Shield TV if I need to be calm because it's me that's going to look bad. I will lower the bitrate in order to watch my documentaries with Kodi and my TV. I only regret one thing: I spent my money for nothing.
Can you share a sequence of your documentary that sometimes plays well and sometimes doesn't play well ?
Could you also export some colour bars from your editing platform via the same route ?
If you share them I can see how my Shield TV plays them into my Sony UHD TV.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - FoxADRIANO - 2018-12-27
I have Nvidia updated the ShieldTV to 7.2.1.
I attach you 3 files you asked me:
https://www.dropbox.com/s/dyf4igush13d35h/Barre%20colore.mp4?dl=0
https://www.dropbox.com/s/lrpwm6wxnduftla/IMG_20181227_180402.jpg?dl=0
https://www.dropbox.com/s/ttsswy6qvmiew0e/Prova.mp4?dl=0
I think the clip is a bit overexposed, but I created it in this way.
I will buy TMPGEnc Video Mastering Works 6 to create h.265 files. It is a lot of time I think about it and now it is the right time.
I need to tell you now the colours are enough good with Shield TV. My biggest problem is: sometimes Shield TV works enough well but sometimes I see faded and overexposed colors. This is my biggest problem now.
A last question:
You see on the pic (second link) HDMI is: Current HDMI mode YUV 420 10bit Rec.2020
This is my HDMI settings. This is for default because I enabled the best quality of HDMI on my TV. Now I have to choose the color space on Shield TV. I made some tests and it seems the best options are:
RGB 8bit Rec.709 and YUV 420 10bit Rec.2020.
In your opinion which one is better to choose?
Thanks
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - noggin - 2018-12-27
(2018-12-27, 20:06)FoxADRIANO Wrote: A last question:
You see on the pic (second link) HDMI is: Current HDMI mode YUV 420 10bit Rec.2020
This is my HDMI settings. This is for default because I enabled the best quality of HDMI on my TV. Now I have to choose the color space on Shield TV. I made some tests and it seems the best options are:
RGB 8bit Rec.709 and YUV 420 10bit Rec.2020.
In your opinion which one is better to choose?
Thanks
As I said previously - if your content is Rec 709 - chose a Rec 709 output. If you chose Rec.2020 then your Shield TV will convert from Rec 709 to Rec 2020 - and your TV will handle this as SDR Rec 2020 (which some TVs handle differently to SDR Rec 709 in gamma/EOTF terms)
Rec 709 to Rec 2020 conversion isn't always a good idea on every TV. If you don't need Rec 2020 output for other apps, don't use it, and use Rec 709.
I'll try and convert your H264 to H265 for you so you can try that.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - FoxADRIANO - 2018-12-27
Maybe do I explainded badly? On my Shield TV I see Current HDMI mode YUV 420 10bit Rec.2020 and it is for default. I can't change it, it is impossible.
RE: nVidia Shield TV (2015 & 2017 Models) - UPDATED: May 25, 2018 - Hitcher - 2018-12-27
You need to go to Advanced settings > HDMI settings.