[dondre]

Hello fellows,

I have a hand of small specific questions that I wasn't able to answer regarding XBMC
(I've tried to seek the forum but can't find any answer unfortunately)
(Also note that I'm speaking about the best setting for image pipeline handling for full HD 1080p24 MKV rips only, no SD, no DVD...)

Could somebody help me to know what are the settings regarding the colorimeter handling of the in-house DVDplayer?

I've read many articles in an autodidactic way to try to understand as much as I can the colour image handling parameters but am still lacking a knowledge on how XBMC's in-house DVDplayer is handling this video pipeline. I only know that through the DSPlayer fork I'd be able through FFDShow to do a specific fine tuning of my choice.

So here are some questions, thanks for your help already;

- is XBMC's DVDPlayer outputting a full HQ YUY2-RBG32 rendering? (Enhance handling of black & white colorimeter)
- is XBMC's DVDPlayer outputting an odd standard 16-235 8-bit video or is it able to output a complete RGB 0-255? (Thus covering the Blacker Than Black (0-15) & Whiter Than White (236-255))

I read many articles where it's stipulated than even for bluray/HD-DVDs you may find colorimetric data lower than 16 and higher than 235 and I've checked it myself with FFDShow's historical graphic.

IMHO since I'm looking forward to the best video quality from a 1080p24 source on a full HD LCD TV it's important to ensure we use the full 0-255 range that LCD is able to display, or am I wrong and this is something I should not worry about nowadays?

Thanks a lot to all for reading and helping out by sharing experience, really appreciated!
Cheers

[bobo1on1]

XBMC converts everything to 0-255 RGB, anything lower than 16 and higher than 235 on the YUV planes gets clamped.

[dondre]

Brilliant, thanks bobo1on1!

May I abuse and ask you if there is a Quality or Efficiency difference between;

XBMC's in-house DVDPlayer with DXVA2

&

XBMC's DSPlayer fork using CoreAVC 2.0 with CUDA

Or is DXVA & CUDA pretty much the same result?

Thanks!

[bobo1on1]

It'll probably look exactly the same.

[dondre]

Two thumbs up, thanks again you made my day ;-)

[X3lectric]

it will proly look the same but isnt cuda better and dxva2 for windows only?

[dondre]

DXVA is for Windows only, the Linux equivalent would be VDPAU,

But then again I wonder if both DXVA/VDPAU are not using CUDA computation on the GPU...

[bobo1on1]

They might be, but then why does nvidia have the macroblock bug.
It's possible that the YUV to RGB conversion and the deinterlacing is done using cuda.