Video Level Scaling/Clipping Questions

  Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Post Reply
Matt Devo Offline
Mr. ChromeBox
Posts: 4,144
Joined: Nov 2008
Reputation: 188
Location: Austin, TX, USA
Post: #16
(2016-11-11 23:13)TScott Wrote:  I have flipped these settings back and forth on both computers and do not see any effect on the options displayed in Kodi.

right, because on Windows Kodi doesn't control (or try to work around) the driver setting, it just uses whatever is currently set.

Questions about Kodi on a ChromeBox/Chromebook? See:

Chromebox (wiki)
http://forum.kodi.tv/showthread.php?tid=194362
https://mrchromebox.tech


find quote
brazen1 Offline
Posting Freak
Posts: 1,185
Joined: Dec 2012
Reputation: 60
Post: #17
[Image: 2NYXtau.png]

V.17 11/11/16 nightly on Windows 10 PC.

[Image: FFfRj4H.png]

HOW TO - Kodi 2D - 3D - UHD (4k) HDR Guide Internal & External Players
Basic Server & Client Setup WOL
If I have been of help, please add to my reputation as a way of saying thanks, it's free.
find quote
noggin Offline
Super Moderator
Posts: 4,791
Joined: Oct 2008
Reputation: 126
Location: United Kingdom
Post: #18
(2016-11-12 01:54)brazen1 Wrote:  [Image: 2NYXtau.png]

V.17 11/11/16 nightly on Windows 10 PC.

[Image: FFfRj4H.png]

The Kodi menu setting is slightly misleading. It is mainly there to let you force Kodi to output 16-235 within 0-255, rather than let your driver scale 0-255 to 16-235. In some situations - if your TV doesn't interpret HDMI Infoframes correctly, you can set your driver to RGB 0-255 and Kodi to 16-235, and you will get RGB 16-235 Limited without clipping of BTB and WTW and with reduced banding due to scaling ranges. However the HDMI Infoframe may well flag RGB Full range - and newer TVs may thus switch from Limited to Full, giving you grey blacks and washed out colours.

I haven't played with nVidia or Intel drivers enough under Windows to see how they handle Infoframes. (Intel's Linux drivers have support for it - but fritsch et al have tweaked drivers to allow them to be more usefully used with 16-235-in-0-255 situations)
find quote
wesk05 Offline
Posting Freak
Posts: 1,451
Joined: May 2015
Reputation: 47
Post: #19
(2016-11-12 14:30)noggin Wrote:  I haven't played with nVidia or Intel drivers enough under Windows to see how they handle Infoframes. (Intel's Linux drivers have support for it - but fritsch et al have tweaked drivers to allow them to be more usefully used with 16-235-in-0-255 situations)
On Windows nVIDIA doesn't transmit quantization range. For Intel you have to specifically select Full/Limited, if you leave it at "Default Range", it doesn't transmit the quantization range. I haven't checked AMD.
find quote
TScott Offline
Junior Member
Posts: 3
Joined: Nov 2016
Reputation: 0
Post: #20
(2016-11-12 14:30)noggin Wrote:  The Kodi menu setting is slightly misleading. It is mainly there to let you force Kodi to output 16-235 within 0-255, rather than let your driver scale 0-255 to 16-235. In some situations - if your TV doesn't interpret HDMI Infoframes correctly, you can set your driver to RGB 0-255 and Kodi to 16-235, and you will get RGB 16-235 Limited without clipping of BTB and WTW and with reduced banding due to scaling ranges. However the HDMI Infoframe may well flag RGB Full range - and newer TVs may thus switch from Limited to Full, giving you grey blacks and washed out colours.

I haven't played with nVidia or Intel drivers enough under Windows to see how they handle Infoframes. (Intel's Linux drivers have support for it - but fritsch et al have tweaked drivers to allow them to be more usefully used with 16-235-in-0-255 situations)

Thank you, that makes sense. I am going to try updating Kodi and set as you suggest. I bought a bluray player and it is sending the proper range to the TV as I am seeing the below black levels on the test disc.
More tweaking to do...
find quote
Post Reply