lkml.org 
[lkml]   [2016]   [Jul]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2 2/6] [media] Documentation: Add HSV format
From
Date
On 07/16/2016 04:12 PM, Laurent Pinchart wrote:
>> Limited vs full range quantization is handled by the quantization field.
>> It's there already.
>
> Right. I wonder how we'll deal with that when someone will come up with more
> than one limited range quantizations, have you thought about it ?

There is just limited and full range. Limited range is basically a left-over
from analog TV.

>> Limited range RGB is needed for HDMI due to a brain-dead spec when dealing
>> with certain kinds of TVs and configurations. Don't ask, it's horrible.
>
> I'd still like to know about it for my personal information :-)

RGB video over HDMI is limited range for CE timings (i.e. 720p, 1080p, 4k)
unless signaled otherwise through the AVI InfoFrame. And you can only
signal that if the sink supports it in the EDID (and doesn't lie about it).

Typically TVs follow CE timings, so hooking up a PC to a TV may very well
cause problems (and often does).

Regards,

Hans

\
 
 \ /
  Last update: 2016-07-16 18:01    [W:2.383 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site