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View Full Version : Black levels in ffdshow VMR mode


oddball
14th February 2007, 13:13
I'm having some issues with black levels in ffdshow when playing back some HD x264 content. I am using VMR9 windowless in Zoom Player 5 and find the black levels are too bright/washed out. If I use COreAVC 1.2 the blacks are OK. I have had to compensate for the black levels in ffdshow with the gamma levels down to 0.88

ffdshow tryout 896

_xxl
14th February 2007, 13:18
Please report bug here:
http://forum.doom9.org/showthread.php?t=120465

KoD
14th February 2007, 17:42
As far as I know, HD content uses different matrices for color conversion than those used for SD. In other words, the color conversion currently performed by your chosen renderer is not appropriate for HD content. You are also using VMR9 which is not appropriate for displaying on a computer screen but on a TV screen.

foxyshadis
14th February 2007, 17:59
Actually, see this thread (http://forum.doom9.org/showthread.php?t=120718), which expands on KoD's comments. CoreAVC has a "fix range" checkbox for this, but you need a little more effort to get the same in ffdshow.