[mr.biker]

Hi i try to test it on Sony Bravia KD-65XE8596  and i think its true .
Test file :Star.Wars.The.Last.Jedi.2017.2160p.UHD.BluRay.x265-EMERALD

Scenario 1: Kodi on AndroidTV


Scenario 2: Kodi on Windows (PC connected via HMDI 1.4 to Sony TV) set to 1920x1080@60HZ


Scenario 3: Kodi on Windows (PC connected via HMDI 1.4 to Sony TV) set to 3840x2160@30HZ



How to achieve Scenario 3 on AndroidTV with kodi ?

 Who prints this information? 

I did

[User 99401]

The real question is how to check that indeed when using Kodi, the video (not GUI) it is native 4K
As far as I know, Kodi Display Info (Z on keyboard) gives the view that is shown few posts before

Strange though, using the latest Alpha on XE93, it gives me ... Sizing: (0,0)->(0,0) - don't know what this means...

[hennys]

I see also (0,0) -> (0,0)

screen resolution is reported as 1920x1080@60hz

Question is whether the screen resolution is the real output of the signal that is being displayed, or the resolution that is queried from the kodi GUI (which is to be expected to be rendered at 1080)

[CiNcH]

The real question is how to check that indeed when using Kodi, the video (not GUI) it is native 4K

 KLICK... unfortunately video is gone. Video however is in 4K for sure.

[User 99401]

new link
https://mega.nz/#!ioRVgaaL!H5yDvLwS056SW...rj0lbk5MzY

[hennys]

Seems to play fine at 4k.

Must be a matter of displaying the wrong information then ?

[chrisyu]

I bought a 2018 sony z9f tv,  Android TV Oreo 8.0 .
It's UI resolution locked at 1920x1080@60Hz.
Kodi list as "Application" in Action Menu -> Picture, picture mode is "Standard".
 
So I recompiled Kodi 18 with a different package name, the amazon one, from posts in Sony forum.
Now Kodi listed as  "Application(Video)" in Action Menu, with default picture mode set to "Cinema".

But resolution still locked at 1920x1080@60Hz, when playing 4K videos, press "z" for zoom function, shows exact same info as before.
And the picture quality is slightly worse than Kodi on Shield TV.

So I kind of think, different package name only affect default Picture mode.
"Application" and "Application(Video)" both are locked at 1080p .

But what about Sony's default video player ?
It listed as "Application(Video)" too.
I played some 4K demo videos (sdr/hdr/dolby vision) with it , definitely in 4K. 
And netflix, it has it's own picture mode (Netflix Mode), play 4K video in 1080p seems unbelievable.

So maybe there is other switches to control resolution?

[CiNcH]

Why don't you just read this thread!!

[chrisyu]

I did read this thread, and what part you think I missed?

If you mean your explanation at #14, I just not so sure Kodi works that way.

Kodi 18 has a whitelist setting, allow output original video format to display device, let display device do scale job.
Forum user outcave explained the setting here : https://forum.kodi.tv/showthread.php?tid...pid2735070

To my understanding, without whitelist, Kodi will do scale job itself.
Kodi 18 on sony TV's whitelist has only 1920x1080@60Hz one option, so there's no need to enable it for 4K videos.
When playing a 4K video at 1080p TV, Kodi will scale it to 1080p, then give it to TV.

So on Sony TV, with GUI at 1080p, how does Kodi know down scale 4K video to 1080p is not necessary?

Thanks for your time.

[CiNcH]

4K video plays as 4K. Just play the sample video for which a link has been posted in this thread. It is exactly the intended behavior. No scaling of video involved. Neither in Kodi. It knows that the hardware supports 4K video. So it sends that to the video pipeline.

[chrisyu]

OK, I think this time I figure it out.
You are right, 4K video is played at 4K, no scaling involved.

Here is some debug logs when I played a 4K video on Sony TV.
Kodi use AndroidMediaCodec to render video, Kodi pass original video information to AndroidMediaCodec, AndroidMediaCodec decides whether scaling is needed.
Since it's a 4K TV, so no scaling happened.
GUI resolution is not relevant here, I misunderstood this.

And I compared sample video on Kodi@shield, Kodi@TV, DefaultVideoPlayer@TV, all the little pink texts are readable, this won't happen with down scaling. 

Hope I understand correctly this time, and thank you for reminding.

Code:

19:38:46.584 T:18446744072763468144  NOTICE: Opening stream: 0 source: 256
19:38:46.584 T:18446744072763468144  NOTICE: Creating video codec with codec id: 173
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::Open hints: fpsrate 24000 / fpsscale 1001
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::Open hints: CodecID 173
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::Open hints: StreamType 2
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::Open hints: Level 153
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::Open hints: Profile 2
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::Open hints: PTS_invalid 0
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::Open hints: Tag 0
19:38:46.584 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::[b]Open hints: 3840x1600[/b]
19:38:46.584 T:18446744072763468144    INFO: CBitstreamConverter::Open bitstream to annexb init
.... skipped some lines ....
19:38:46.700 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec:: [b]width(3840), height(1600)[/b], stride(0), slice-height(0), color-format(0)
19:38:46.701 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec:: crop-left(0), crop-top(0), crop-right(3839), crop-bottom(1599)
19:38:46.701 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec:: Multi-Surface Rendering
19:38:46.701 T:18446744072763468144    INFO: CDVDVideoCodecAndroidMediaCodec:: Open Android MediaCodec OMX.MTK.VIDEO.DECODER.HEVC
19:38:46.701 T:18446744072763468144   DEBUG: CDVDVideoCodecAndroidMediaCodec::UpdateFpsDuration fpsRate:24000 fpsscale:1001, fpsDur:41708
19:38:46.701 T:18446744072763468144   DEBUG: CVideoPlayerVideo::OpenStream - open stream with codec id: 173
19:38:46.701 T:18446744072763468144  NOTICE: Creating video thread

[word999]

Adjust the sharpness to the highest.Then you can see KODI's testvideo actually is 4K.
And youtube is 4K too.

[roliverosc]

Hi guys, I'm happy for having been able to find a thread that talks about this topic. I save having to open it.

I recently bought a Sony XF90 television and I was surprised by the fact that the Android TV GUI works in 1080p.

What I want to point out is that HDR videos do not work properly either. The videos are played but no flag appears and is not playing in HDR mode on TV. Also, do not see the change of screen refresh to 24p. It would take time to make some changes for Kodi 18 Leia and solve all this embroilment.

I will follow the post. Whose fault is it? from Sony, from Google Android TV, developers. We should create a "Kodi mode".

Regards from Spain and sorry for my english.

PD: It is curious that in NVIDIA Shield appears the correct resolution in info system of Kodi

[CiNcH]

What I want to point out is that HDR videos do not work properly either. The videos are played but no flag appears and is not playing in HDR mode on TV.

Here they do for HLG and HDR10. HDR logo should appear in the TV's picture settings.

Dolby Vision isn't yet supported by Kodi. It requires enumerating the DV compliant decoders and chosing the correct one based on DV profile and level. BRAVIA only supports single-layer BTW (profile 5/dvhe.stn). DV-enabled BD rips will therefore only play as SDR on Sony. But as I wrote, DV is currently not properly supported by Kodi.
 

Also, do not see the change of screen refresh to 24p.

BRAVIA does not support the respective Android API for switching display modes/refresh rates. As for 24p, it does not have to. When parametrized correctly, Motionflow will detect the 3:2 pattern, reverse it and perform a clean 5:5 on the 120Hz display.
 

 PD: It is curious that in NVIDIA Shield appears the correct resolution in info system of Kodi

nVIDIA SHIELD renders the GUI at full resolution. It has the power to do so at 4K.

[roliverosc]

@CiNcH thank you very much for clarification.