Testing MrMC 3.5.1

[carletors]

Hi!

I really love the opacity skins but I miss a small feature. Opacity seems to forget the latest position of the cursor when pressing "ok" (siri remote center click). This behaviour is not present in other skins. When watching live tv this becomes a bit annyoing, as you need to first press ok, then swipe, press ok again to get to the channel list, in other skins (since they remember the position) you just have to double click on "ok" and the channel list will display.

Apart from that, great job and MrMc keeps getting better each day!

[davilla]

I don't think the black level issue has been fixed in this build. It is actually worse now. The levels are all wrong. I only checked the levels for HDR with "03 black-level-v3" test pattern.

Here are two HDMI output frame exports. One from MrMC testflight build and the other one from computers app. You can open up the images in a photo editor and check the color (multiply by 4 if using Photoshop color dropper).

https://mega.nz/#!tYVjUb6b!qQSWlwqqjTSV ... riCgz-VxKY
https://mega.nz/#!BUcTGCZT!pMzHsquOfrIE ... MA5XrJanIk

Which tvOS are you running ? Mine just updated from 11.2.5 to 11.2.6 and the black level issue has changed behavior.

[cosmoxl]

I don't think the black level issue has been fixed in this build. It is actually worse now. The levels are all wrong. I only checked the levels for HDR with "03 black-level-v3" test pattern.

Here are two HDMI output frame exports. One from MrMC testflight build and the other one from computers app. You can open up the images in a photo editor and check the color (multiply by 4 if using Photoshop color dropper).

https://mega.nz/#!tYVjUb6b!qQSWlwqqjTSV ... riCgz-VxKY
https://mega.nz/#!BUcTGCZT!pMzHsquOfrIE ... MA5XrJanIk

Which tvOS are you running ? Mine just updated from 11.2.5 to 11.2.6 and the black level issue has changed behavior.

Good grief. You might want to update to the 11.3 beta then to see if they're "fixing" it even more.

[wesk05]

Which tvOS are you running ? Mine just updated from 11.2.5 to 11.2.6 and the black level issue has changed behavior.

That's a good question. I am not sure of the version. I am not signed up for any beta. It should probably be on 11.2.5. Will check later tonight.

[wesk05]

@cosmoxl: I tried almost everything and I still couldn't get anything above 235 or below 16 to show up. I tried RGB low/high, YCbCr with displays that support quantization levels for YCbCr (Sony, LG) & that don't support quantization levels (Samsung)

Couple of questions for you

1) The display that you are using
2) Color space being used on the Apple TV 4K
3) Test pattern that you are using.

[davilla]

ok, made some more changes based on 11.2.6 behavior. As I don't have the nice fancy tools that wesk05 has, I have to compare mrmc to itunes via an indirect method. In Xcode, we can take screenshots when debugging MrMC and this also can grab screenshots from other Apps. But the screenshot tool does not capture HDR quite right, it mucks with the gray levels. But I can compare mrmc to itunes by seeing if I get the same 'mucked with' images.

Using "03 black-level-v3" test pattern.

I grab a screenshot of it under itunes. (home sharing), then do the same under MrMC. Now take these two screenshots, autolevel them and compare their histograms. The histograms are identical now.

[davilla]

@cosmoxl: I tried almost everything and I still couldn't get anything above 235 or below 16 to show up. I tried RGB low/high, YCbCr with displays that support quantization levels for YCbCr (Sony, LG) & that don't support quantization levels (Samsung)

Couple of questions for you

1) The display that you are using
2) Color space being used on the Apple TV 4K
3) Test pattern that you are using.

Turn off VideoToolBox decoder and use AVFoundation for both h264 and h265. AVFoundation will show the above 235, VideoToolBox will not.

[cosmoxl]

@cosmoxl: I tried almost everything and I still couldn't get anything above 235 or below 16 to show up. I tried RGB low/high, YCbCr with displays that support quantization levels for YCbCr (Sony, LG) & that don't support quantization levels (Samsung)

Couple of questions for you

1) The display that you are using
2) Color space being used on the Apple TV 4K
3) Test pattern that you are using.

Turn off VideoToolBox decoder and use AVFoundation for both h264 and h265. AVFoundation will show the above 235, VideoToolBox will not.

exactly. I have to adjust contrast to 46 to get VTB and ff to show up to 253.

[cosmoxl]

@cosmoxl: I tried almost everything and I still couldn't get anything above 235 or below 16 to show up. I tried RGB low/high, YCbCr with displays that support quantization levels for YCbCr (Sony, LG) & that don't support quantization levels (Samsung)

Couple of questions for you

1) The display that you are using
2) Color space being used on the Apple TV 4K
3) Test pattern that you are using.

1) Display is Vizio xvt3d554sv
2) colorspace is ycbcr 4:4:4 8bit. The ATV only says ycbcr but my receiver confirms it's 444 8bit.
3) Test patterns I use: https://anonfile.com/ybr5D6dfb6/3-White_Clipping.mp4 and https://anonfile.com/z5rdDddab9/1-Black_Clipping.mp4

[wesk05]

OK, will try everything tonight. Lot of homework!