On Thu, 29 Jun 2006, E.Chalaron wrote:
> I was wondering if you anybody had some experience with Premiere.
Nope. As I recall that's Adobe's ~equivalent of FinalCut but for
windoze.
> Someone here has a mov XGA produced by the MJPEGTOOLS/ libquicktime
> uncompressed videos 422 and when it is imported in Premiere then the gamma
> correction on Y is giving strange results on colors.
mov XGA? This is one of your files but in its original 4:2:2
format without going thru the YUV->RGB->YUV processing, right?
Without seeing the "strange" it's hard to even begin guessing what
is happening.
Out of curiosity - are they trying to brighten, darken, ??? the
video by adjusting the gamma?
> I understand that Premiere is converting on the fly YUV ->RGB -YUV for post
> processing, but cant see why the colors are modified unless the gamma is
> applied on the RGB scale.. One would expect the Y to be modified..
Well, Adobe (of Photoshop fame) is probably more at home in RGB
than YUV ;))
> Anybody with this experience ?
No, but I have imported genearated/home-created '2vuy' (8bit 4:2:2)
files into FinalCut Pro without problem.
Oh, one thought that just occured to me...
There are some quicktime atoms that can be, but rarely are, placed into
a file. On a MAC the defaults are maybe 'sane'.
I doubt that's the problem though. Could be a Premiere bug I suppose.
Steven Schultz
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