Posts by The Coolest

Quote from routir

pvr simple client with multilple

Thanks! I'll try this out after work.

Quote from mike2002

When I press the "Info" button on the remote of my UH6100 it indicate BT.2020 on my HDR content and nothing on my SDR content. So I presume if it is not specified BT.2020, it's BT.709.

If I put the "echo 444,10bit ..." command in the autostart, 4k SDR and HDR contents is BT.2020. Personnally I don't like BT.2020 colorspace on non BT.2020 contents, color is too saturate... I test it a lot of time.

Exactly. I will have to test this on my Vizio and see what it does, but LG does seem to behave this way when you enable 10 bit 444 output.

It's a bit frustrating. When 10bit is not enabled, and I play HDR10 content, even though the TV switches into HDR/BT.2020 mode, color saturation is lacking. I made side by side comparison by playing the same content with the internal player. Once I switched 10bit 444 on, the color saturation is the same with HDR, but then SDR is oversaturated. So the only workaround I came up with is to enable 10bit 444 when I want to watch a HDR movie, and then switch back to 8bit 444. A bit of a pain.

Quote from 2re

By running Kodi in 2160p and 444 10bit, I have the same picture settings on my TV for HDR and SDR, accept for the color saturation, this is about 10 clicks higher on HDR. And if your TV is adjusted right, you'l see that HDR is overrated;)

But if i set Kodi to 1080p, there is no way I can get the same picture as with 2160p on 1080p content, But this might have something to do with the way my TV handles UHD and HD.

And since my TV has different profiles for HDR and SDR, the settings are applied automatic when changing source between HDR and SDR:)

The only thing you achieve by doing that is screw with how the TV displays normal SDR content.

1. You can't do that by eye with accurate results.

2. This will screw up SDR for other sources if you use the same picture setting across sources.

3. Why would I want to do that?

4. HDR is not overrated at all. It highly depends on the content you watch, and the quality and the capabilities of your display.

Some movies are just not that much different to their SDR counterparts.

Quote from kszaq

If you ask me personally - I have no idea. Use what looks better to your eyes.

Is there any way to determine the type of content being player (ie. SDR/BT.709 or HDR/BT.2020) and automatically switch 10bit 444 on and off during the automatic resolution/refresh rate switch? Not being able to do this right now is probably a low priority, but I think that in the long run it's an important one. Please see my reply to mike in this post.

And another, unrelated, question. I use live TV with the IPTV PVR addon. Now this addon only supports a single playlist.

There's a fork of the IPTV addon, which allows using up to ten playlists. This would be a very useful addition (perhaps optional? I don't know) to your already great builds. Here's what I'm talking about: pvr.iptvsimple/pvr.iptvsimple at master · AndreyPavlenko/pvr.iptvsimple · GitHub

Quote from mike2002

I have 2 4k hdr tv, Samsung KS9000 and LG UH6100.

Thanks. Perhaps the Samsung behaves differently.

You LG doesn't have WCG, so it's possible that you don't see a difference whether it's in BT2020 color mode or not. Not sure if it's possible in WebOS 3.0:

Press up on the remote, select the HDMI input and press OK. For me it shows the resolution, audio output format, and BT2020 when I'm in 10 bit mode.

Quote from kszaq

If you ask me personally - I have no idea. Use what looks better to your eyes.

What I meant is "Is it feasible to make it happen automatically during resolution\refresh rate change?" A manual solution would be an acceptable workaround, though. Maybe some sort of addon? Guess I should start catching up on how to make a Kodi addon.

In my case if the box stays in 8-bit mode, the TV switches into HDR but doesn't actually go into wide color gamut mode, not to mention that HDR content should be displayed in 10-bit.

"10-bit" SDR looks terribly oversaturated, so it looks bad.

"8-bit" HDR looks undersaturated, so it doesn't look right either.

So I'm pretty much stuck. I can use the built in player in the TV for these movies, but the TV can only properly handle Dolby "Everything" passthrough properly, but it can only handle DTS and not the more advances audio formats.

Quote from mike2002

On my side I do not put the command "echo ..." in the autostart and libreelec switch to the good colorspace automatically with my hdr contents.

May I ask what TV make/model you have?
I've got a LG B7, and I guess my problem has more to do with how the TV handles a 10 bit signal than a problem with LE.

Hi kszaq

I upgraded to this build today for its 10-bit support. I noticed that if I execute "echo '444,10bit' > /sys/class/amhdmitx/amhdmitx0/attr", my TV will automatically switch into non-HDR BT.2020 colorspace.

Now I understand that this isn't a problem with anything you did, but I would like to know whether it's feasible to switch to 10-bit mode only for HDR10 content and then switch out of it when you stop playback?

kszaq

My TV was updated to support 50Hz input signal, but it's not exposing it in its EDID right now, so I have the following in my autostart.sh file:

mount -o bind /storage/.config/disp_cap /sys/class/amhdmitx/amhdmitx0/disp_cap
echo 4 > /sys/module/amvdec_h264/parameters/dec_control

Each line cancels out the one before it. If I use the custom disp_cap file, it cancels out the dec_control and if I use the dec_control, it cancels out the custom disp_cap file.

Is there a way to make it work without these two settings cancelling out each other?

kszaq

Thank you for the help.

kszaq

Alright, from a few minutes of looking at it I think that did it, thanks!!!

I'll check it more thoroughly tomorrow, and if it indeed solves the problem I'll add that command to autostart.sh.

It shouldn't negatively affect normal content like 720p/1080p/4k encodes, right?

And one more question if I may, what does this setting do exactly? I don't know much about linux and decoders, so I tried to search for it but didn't really come up with anything informative.

@kszaq

I appreciate the updates, thanks.

Since with K not really working for me and L being back to the MM kernel, some live channels are glitchy.

I found that disabling amcodec fixes this, when ff-mpeg is used.

I'm trying to figure out whether it's possible to only use amcodec for 720p and up? Since the glitchy channels are SD and the S905X can handle decoding them in software.

@ eisbaer
It seems like a clean install of K will fix all the issues with getting the box to bootup with a 4k TV.

Quote from Pelican

Clean install works, maybe I'll try to backup and restore my data.

I tried that. At 4K@60Hz I got kodi on 1/4 of the screen.

Pelican, are you trying a clean install?
I had that too.
Create a clean SD without a device tree, I couldn't get mine to work when I used a device tree.

wrxtasy
Sadly changing resolution didn't help. I only see this problem on SD channels. They are 25FPS, though, so I don't think they are interlaced.
I tried going down to 720p for the GUI with the same result.
Disabling hardware acceleration did fix it, but it's a pain in the rear, as I'd have to enable it when I watch non-IPTV content.

Thanks for the tip, I'll see if lowering the GUI to 1080p will fix this problem.

Quote from yatoya

The GUI will be slow using 4K. Box hardware isn't strong enough to deal with 4K. Even at 1080p it's a bit sluggish.
Box specs needs to render all the animations. Kodi skins can be heavy.
If you want smooth GUI buy a powerful box with strong Intel chip and Windows.

I disagree. With 'J' (and 'G' before it) the GUI with the default Kodi skin is just fine. I have had this box for 4 months and it is always set to 4K@60FPS.
I could probably live with GUI being run at 1080P, but the other issues with playing 4K content is something I can't live with. It could be my particular box, though.
To be honest I was happy with 'G', but wanted to fix the stuttering channels in Live TV.

Quote from Daz

I switched from 8.0.1j so I had to.

I managed to get it to work as a clean install, thanks. But sadly the GUI is dog slow when set to 4K@60Hz, it feels and behaves like it's 30Hz.
And there are still weird problems with playback when the box is outputting 4K@60Hz, the videos look like what you see when you fast forward a VHS tape, only worse.
I was able to watch 25FPS content before, now can't, with the same issue.
Sadly, I'm going to go back to 'J' and live with the judder-y channels.

I may give LE 8 a shot sometime later, maybe it'll work better.

I'll give it a shot if all else fails. I made a backup of my settings.

Did you do a clean install on the SD card? Because I tried to use the update process, from an earlier version.

Quote from Daz

I had the same issue first time round so I tried again and left the original device tree and then it worked.

First time around I forgot to put the device tree and had the same result. Then I tried with the new device tree.
Then I used J with the device tree and it works again.
Should I maybe reboot the box if it fails to start up the first time? Maybe HDMI subsampling needs to be off for this newer build... *shrug* I'll do some more testing later, thanks for the input.