DVD Playback is black & white (with hint of blue) not full colour

I had a number of problems getting some video files to play in full colour and after raising a question (http://www.experts-exchange.com/Apple/Software/Q_23484778.html) I eventually solved it by turning of DirectD in Quicktime.
I haven't played DVDs for a while, last time I played them they were fine (full colour) but playing them now they look the same as the videos did (black and white with a hint of blue, but no other colours).
Alas system restore wasn't turned on on the machine (it is now) so I can't go back to see if recent codecs etc have caused this.
I had a number of codec packs, but I have uninstalled them all and now just have the Vista Codec Pack (4.7) installed but nothing else.  Uninstalling all my codecs and reinstalling just Vista Codec Pack didn't change the black & white DVD playback problem.
Any suggestions about how to fix this?
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hedgertAsked:
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hedgertConnect With a Mentor Author Commented:
I have solved the problem by rolling back my NVIDIA display driver.  I hadn't consciously updated it, having had a lot of trouble finding a version that worked properly with my HDMI connected LCD TV.  However, I had HP update turned on and I think that had installed an updated version of the driver with some kind of colour issue in it.  Having rolled back the display driver DVD playing is back to full colour as are the AVI files I had taken with my digital camera and previously played successfully in colour.
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manfergCommented:
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hedgertAuthor Commented:
I think it has to be a codec issue.  I've tried changing saturation but that has no effect.  I can't change hardware acceleration - the NVIDIA driver doesn't allow it.

Everything is full colour except when playing DVDs - which with all players are B&W - but with all players plenty of other video files play perfectly.

I tried ripping the DVD to disk and then viewing it using FFplay and then it plays in full colour.

So I think it has to be a codec that somehow FFplay uses but the other players don't.  But I can't find any information on the codecs that FFplay uses.
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tonsofpcsCommented:
What software are you using to play the dvd?  It is likely using directdraw, if you can't figure out how to change this, might I suggest using VLC or Media Player Classic to play the DVD.  
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hedgertAuthor Commented:
Every media player I have found has the same problem.  I have tried Windows Media Centre, Windows Media Player, VLC, Media Player Classic, all have the issue of black & white playback.

The only way I have found of playing in full colour is to rip the dvd and then play with FFplay, which is hardly convenient!
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safetykidsCommented:
It sounds like it is something that is set when it plays a dvd, and just a dvd. Could you post the players you use/tried?
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hedgertAuthor Commented:
Previous posts lists the players I've tried Windows Media Centre, Windows Media Player, VLC and Media Player Classic.
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safetykidsCommented:
sorry for not seeing that. Have you tried using a clean install of the programs, as that should reset the settings back to defaults?
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hedgertAuthor Commented:
I've taken them all off (except the ones built into Windows) and put them back on again.
I also took off Real Player completely as I'd read that could muck up other settings.  Also tried putting it back on again - no change.

My problem turns out to be wider than I had thought - it isn't just DVDs.  I'm having problems playing back some API files as well.  I have a number of APIs that I've taken with my camera that I have played perfectly before, but which now only play with colour in QuickTime (where in response to the original colour problem I mentioned above in a link in the first post I have turned off DirectShow).  In Windows Media Player, Windows Media Centre, RealPlayer, GOM Player, VLC and Media Player Classic they play in black and white (or sometime black and white with a little of one colour only).
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hedgertAuthor Commented:
Sorry - for API files - should have read I'm having trouble playing some AVI files.
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