Intel VAAPI howto with Leia v18 nightly based on Ubuntu 18.04 server
(2015-11-12, 18:41)onizuka Wrote:
(2015-11-12, 13:15)noggin Wrote:
(2015-11-12, 07:49)b0mb Wrote: @fritsch

Í´m going to recalibrate my TV.

Should i calibrate it to SRGB or REC. 709 now if i use the 0-255 Color mode?

Do you have any sRGB sources? Pretty much everything I watch (HDTV, Blu-ray) is ITU.709 based (16-235 4:2:0 YCrCb) with the SD stuff ITU.601 (16-235 4:2:0 YCrCb) based (DVDs, SDTV) with a 601->709 conversion done by whatever is playing/receiving ard/or upscaling. I have a small amount of ITU 709 16-235 YCrCb 4:2:2 content too...

Unless you are shooting your own non-ITU 709 content and watching that - or have a scaler or AVR that is doing a colour space conversion away from ITU. 709 - all of your content is likely to be 601 or 709, and your 601 content is likely to be converted to 709 if you are watching it on a device that upscales.

(601 and 709 have different YCrCb->RGB conversion factors hence the difference and conversion requirement)

Is this technical jargon for "everything is Limited anyway, so why bother unless your Martin Scorsese?" I have a Samsung 4k TV that supports "UHD Color". My terrible interpretation of that mode was "Cool! Isn't that a form of Full RGB?, Should probably turn that on and change my Kodi settings." After reading this, sounds like I should turn it all off and settle back into Limited. I had no other reason to change other than "If my shiny new TV supports it, use it."

Sort of.

If you only watch pre-recorded content from normal sources (DVD, Blu-ray, TV) , then it will be delivered to you in the same two formats. 4:2:0 YCrCb 8 bit Limited 16-235 range in ITU 709 colour space for HD, and ITU 601 colour space for SD. If you upscale SD to HD then the device doing that should do the conversion from 601 to 709 for you.

If you shoot stuff yourself on your own camera and edit it - then if you aren't working in 709 or 601 you probably know enough to know what to do!

The one area I'm less clear about is games consoles playing games - as they are originating content not replaying stuff acquired by others. They may well use the Full Range RGB output if you configure them to do so.
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Intel VAAPI howto with Leia v18 nightly based on Ubuntu 18.04 server18