lists at glidos
Aug 19, 2012, 4:09 PM
Post #5 of 5
On 19/08/2012 21:33, Free Denizen wrote:
Re: VDPAU picture degradation, possibly since 0.24 to 0.25 switch
[In reply to]
> On Sun, Aug 19, 2012 at 12:40 PM, Paul Gardiner <lists [at] glidos> wrote:
>> When I'd noticed that sort of discolouration before,
>> I'd put it down to the source, but I realised tonight,
>> that if it was the source, it should be impossible to
>> adjust it out. That's where I got the evidence that
>> the problem with the frontend: I found that I could
>> adjust it out, but only by adjusting Myth's settings,
>> not by adjusting my TV; it seems the RGB values are
>> being clipped before getting to my TV, hence it must
>> be Myth that's doing the clipping.
> even if it is the source you may have been able to adjust it such that
> it appeared more normal. Try playing it back with vlc, or if you have
> recording from 0.24 see if those exhibit the problem.
Yes, you are right. I just realised the flaw in my logic. If
the source has out of range Y then Myth can correct it
before the RGB conversion, but once the conversion is
done it is too late, so the TV can't correct it.
Also I just did some tests with samples from the AVCHD
Blu-ray and my set up is pretty much perfect. I guess
I was imagining the degradation.
Thanks for the replies - you, Richard and Michael.
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