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Pick the Right Kodi Box (UPDATED FEB 2015)
The last thing we have control of ends in an RGB, which also is the framebuffer ... after that we have absolutely no control on what is happening, this is amlogic on linux, you can see this in the boblight code for example: https://github.com/davilla/boblight-1/co...6665997a7f
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
I don't want to talk bad about any platform I just want to emphasize: if we don't have access to the "perfectly" decoded data, it is worth nothing, cause we have no influence of how colors / formats are transformed.

The worst example was VAAPI. Here we decoded and the only way to get the data back was a full copy which vaapi transformed from NV12 to Full Range RGB for us. So in this most likely ugliest case: we got banding for free - always - without a performant workaround. Such things still can happen on closed platforms and this is something one needs to take great care.
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
I understand that Kodi can't control the final color space transformations. It is all dependent on the platform hardware. I have checked the output of several popular devices and Amlogic was the only one without any error (within a pre-defined set of reference test patterns). All the others had errors. However, these errors were relatively small and may not be noticeable at all. I have no idea as to what is special about Amlogic decoder.

If you haven't seen this post already, you should take a look at this: 2023209 (post)

This one compares Minix devices and Google Nexus Player: https://www.scribd.com/doc/260318194/HDM...-X8-H-Z64A
Should have looked there earlier - what Noggin says, basically is happening. Though in Bypass case AML does it not us.

Edit: Btw. can you give me a mediainfo of this test pattern file, please?

Here, fbset on Wetek on a 720p TV:

Quote:Wetek:~ # fbset -fb /dev/fb0

mode "1280x720-0"
# D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
geometry 1280 720 1920 2160 32
timings 0 0 0 0 0 0 0
accel false
rgba 8/16,8/8,8/0,8/24
endmode

Wetek:~ # fbset -fb /dev/fb1

mode "1280x720-0"
# D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz
geometry 1280 720 1280 1440 24
timings 0 0 0 0 0 0 0
accel false
rgba 8/16,8/8,8/0,0/0
endmode

So - we for sure end up in RGB - hopefully in the right range :-)
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
(2015-09-13, 09:16)fritsch Wrote: Should have looked there earlier - what Noggin says, basically is happening. Though in Bypass case AML does it not us.

Edit: Btw. can you give me a mediainfo of this test pattern file, please?

Here you go: http://pastebin.com/LdQ32gDq This is from one of the mp4 files. They are all encoded 8-bit YUV 4:2:0 You can find the patterns here: http://www.displaycalibrations.com/ The patterns have been tested for accuracy on Dolby Reference Monitor and against Accupel Pattern generator.
Okay - yeah that's what I was expecting. I posted you the framebuffer config above, which is RGB completely. This is the fb kodi is rendering to. If - after that - AML does a great job of "transforming" the colors lossless - all is fine. But as said earlier, this is pure luck and if it was differently, absolutely nothing we could do about it :-(
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
(2015-09-13, 09:33)fritsch Wrote: Okay - yeah that's what I was expecting. I posted you the framebuffer config above, which is RGB completely. This is the fb kodi is rendering to. If - after that - AML does a great job of "transforming" the colors lossless - all is fine. But as said earlier, this is pure luck and if it was differently, absolutely nothing we could do about it :-(

I understand that. That is why I said earlier I don't know how Amlogic is managing it. I haven't had much success with nVIDIA's 10-bit output. None of my test instruments are passing the signal through. Probably due to HDCP being always on in the output.
Oki - Could you test VAAPI if you find time? (Don't forget the xrandr command to set full range and then use kodi for color management?)
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
And to quote my colleague koying:
Quote:10:47 < KS-> <koying>: @fritsch: We don't even "see" the frames. It's direct
vpu->fb
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
(2015-09-13, 10:16)fritsch Wrote: Oki - Could you test VAAPI if you find time? (Don't forget the xrandr command to set full range and then use kodi for color management?)

Sure. I will check it out in one of the coming weekends.
Hi,

RK 3368 PowerVr Rogue G6110 will be normally used by kodi?

I can play only 720p content, 1080P missing pictures very often, unwatchable

rK 3188 could also play only 720P content continiously no luck with 1080p.

I have an old Asrock ION 330 Intel CPU, what can play any 1080P content with older XBMC
Kodi 16.0 ALpha3 (from nighly builds) solved all of my problems!
Nice work!
And I see all the 8 cpu cores when pressing "O"
Hi and first of all thanks for this magnificent software. Right now I'm in the market for a tv media center. I don't know if I should go for an android based or windows based system, nor if it's best to use a box or a stick. What I do know is that I would like to own something that would let me use it to browse the net, watch a few videos on youtube and of course use kodi to stream tv and other content, while still being able to update in terms of codecs and stuff like that.
At the moment I cannot spend more than 100€ however.
Can Someone please point me in the direction of something worth having?
I've heard of the MK808B plus and of minix neo x8-h plus(too expensive for my blood) but other than that I don't know much else about the subject.
anyone?
(2015-09-24, 21:38)deusbraga Wrote: anyone?

The first post in this thread might help you....
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