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color shift within Media 100i

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Pete Curtis
color shift within Media 100i
on Mar 5, 2008 at 9:54:52 pm

Whenever I create a freeze or a transition like a wipe, there's a subtle but definite color shift. It looks like the YUV/RGB shift that happens when exporting and re-importing, but this is occurring entirely within Media 100. It makes no difference whether the transition/effect is rendered or not.

Ideas?

Thanks,
Pete

Media 100i v8.2.3, G4 dual 1.25, OS 10.3.9, Quicktime 7.1.6


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Gary Milligan
Re: color shift within Media 100i
on Mar 6, 2008 at 6:48:45 am

Pete,

Yes, the color shift is there. The solution that has worked for me can be a bit of a pain, especially if you have a lot of transitions or freezes, but it does work. If the color shift you're seeing is towards a green-ish hue then this procedure should work for you: create and render your transition/freeze as usual, split the timeline at the beginning and end of the transition/freeze (basically creating a separate clip), apply a ColorFX setting (Classic > tint +4) to this clip, and you're good-to-go. You might want to save this setting in the ColorFx pane.

HTH

Gary

This is me - this is what I do - http://web.mac.com/garymmw


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Floh Peters
Re: color shift within Media 100i
on Mar 6, 2008 at 7:09:55 am

Yes, this color shift is there from the YUV->RGB->YUV conversion that has to be done for everything that is processed off the P6000 boards (like all transitions except the FastFX transitions). This has been there "forever", but luckily it was small enough for us never to be a problem.
This has been solved for Media 100 V10 and up, due to the fact that the decoding of the video streams is not done on a codec chip anymore.



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Pete Curtis
Re: color shift within Media 100i
on Mar 6, 2008 at 6:02:41 pm

That's the weird part, this color shift is occurring even with FastFX.

Thanks for the fix, Gary. That's the same method I use.

Pete

P.S. Floh, when searching the forum about this issue, I ran across several posts by you that were obviously cut off in mid-sentence. It didn't seem to happen to anyone else. Here's an example... http://forums.creativecow.net/readpost/4/860361


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Floh Peters
Re: color shift within Media 100i
on Mar 7, 2008 at 2:16:01 pm

[Pete Curtis] "P.S. Floh, when searching the forum about this issue, I ran across several posts by you that were obviously cut off in mid-sentence. It didn't seem to happen to anyone else. Here's an example... http://forums.creativecow.net/readpost/4/860361
"


Not really sure what's going on there. I can only imagine it has to do something with the archive functionality of the Cow, since the posts showed up correctly initially.



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