Color Correction Auto Levels results uneven

Good Mornig,
My Color Correction Auto Levels results are uneven. I applied them to a short clip to Test, and they look fine when they apply...but every now and then there is a flicker for a few frames/seconds and it reverts to original colors. I have a 6month old computer 64bit, 12gigs ram....and it is only a 5 minute clip.
Any suggestions??
Thanks in advance

did somemore testing and i think you will be correct.
Why is this?...is it because Auto is "too broad a brush" or my computer doesn't have enough power (12 gigs ram??)
or is it a software weakness. is this usually the same for other, similar, effects??

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Color correction novice back with a problem/question.

Hi,
I have been working on color correction for an edit of a live 2 camera shoot concert. Edits are almost all final. I dug into correcting color between the 2 cameras & after some practice got good results.
Tho, I noticed that corrections looked slightly different after rendering them, and again slightly different after exporting to full uncompressed quicktime video.
Saturation levels shifted (less), & some shots showed slightly different color balance. This is a unique shoot because the stage was fully lit in red light & red can be one of the most difficult colors in video (in my experience).
So I eventually started that vicious cycle of correcting not by eye but by anticipating what was needed to get a desired result after rendering & exporting... each time it was lengthy renders & exports before seeing the results.
So I had several versions of the project saved w/ different renderings, etc. All of this is stored on a 250 gig 2nd internal drive which I bought & installed just for editing. All files & edit lists etc were kept there.
So I'm trying to look at different versions after having to put the project aside for a couple of weeks, and every version I open shows me a list of render files that it says it can't find. I've just been choosing to re-render.
(I'm wondering if a routine session of running disk warrior on my drives could have contributed to this?? Thats the only thing I can think of, other than the OSX upgrade to 10.4.4, which also included a quicktime upgrade.)
I'm new at this so I'm trying to figure out if this disappearance of render files is normal? In one version I chose 'search computer for render files' or something to that effect & I watched it go thru my drives one after another & when it got to the 2nd internal drive (where all the render files should be), it spent about 1/10th the time that it spent searching other drives. It really jumped in & out of that drive really quickly.
Its not all the render files that are missing, I looked in the render folder & some have older dates, while a section of them are from tonite when I re-rendered. Then more with the older date.
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Thanks for your help
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Hi,
I have been working on color correction for an edit of a live 2 camera shoot concert. Edits are almost all final. I dug into correcting color between the 2 cameras & after some practice got good results.
Tho, I noticed that corrections looked slightly different after rendering them, and again slightly different after exporting to full uncompressed quicktime video.
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So I eventually started that vicious cycle of correcting not by eye but by anticipating what was needed to get a desired result after rendering & exporting... each time it was lengthy renders & exports before seeing the results.
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So I'm trying to look at different versions after having to put the project aside for a couple of weeks, and every version I open shows me a list of render files that it says it can't find. I've just been choosing to re-render.
(I'm wondering if a routine session of running disk warrior on my drives could have contributed to this?? Thats the only thing I can think of, other than the OSX upgrade to 10.4.4, which also included a quicktime upgrade.)
I'm new at this so I'm trying to figure out if this disappearance of render files is normal? In one version I chose 'search computer for render files' or something to that effect & I watched it go thru my drives one after another & when it got to the 2nd internal drive (where all the render files should be), it spent about 1/10th the time that it spent searching other drives. It really jumped in & out of that drive really quickly.
Its not all the render files that are missing, I looked in the render folder & some have older dates, while a section of them are from tonite when I re-rendered. Then more with the older date.
Anybody have any advice?
Thanks for your help
Duane
G5 tower Mac OS X (10.4.4)

Color Correction Auto Levels results uneven

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