Poor colour quality on HTPC

jayuk20

jayuk20

jayuk20

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Joined
24 Dec 2008
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28
When I built my PC form here it was only for an HTPC and now I am having problems with picture quality.

Few days ago I made Divx copies of a couple DVDs which play and look great on my laptop but when I play them on my PC through a Bush SD LCD TV the black levels are so dark it's almost unwatchable. I wondered if it was my TV but then playing the same movies on a cheap Sumvision mediaplayer hooked up via scart it looks normal as it does on my laptop. I've tried messing about with the gfx cards (NVIDIA GeForce 7025) control panel with brightness/contrast/gamma/digital vibrance but it just doesn't do much to the black levels.

I play the movies though MediaPortal and use MPC Mpeg 2 decoder and DivX for H264
 
Sounds like you are running into the broadcast vs PC range. Broadcast TV has a black level set at RGB 16, 16, 16 and a white level set at 235, 235, 235. The PC is probably playing the video out full range (i.e. 0..255). This will leave the black levels crushed. The trick is to put the TV in PC colour space (if it has it) or get the HTPC to output the video at video levels (probably in the postprocessing section somewhere).
 
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