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[jitter] cc.uyvy2rgba.jxs and optimization

vade doktorp at mac.com
Thu Jan 3 02:47:02 MST 2008


Hm, I must be missing something? What do you mean "store" a uyvy  
"within" argb? UYVY has 3 planes to ARGBs 4? Youre going to loose  
something somewhere.. unless you are being really tricky! (do share!)

Official UYVY codec? dont know, but any YUV codec should do, from my  
understanding. Uncompressed 10 and 8 bit 4:2:2 YUV from Apple, MJpeg/ 
PhotoJpeg , DV, DVCPro, DVCProHD and so on

http://www.fourcc.org/yuv.php

On Jan 3, 2008, at 4:16 AM, John Dekron wrote:

> HI Vade,
>
> vade schrieb:
>> Hm. Unless I am mistaken, UYVY does absolutely nothing with the  
>> alpha channel what so ever. That information is lost to the ether  
>> unless you use the alphaglue shader and read in the alpha via other  
>> means. UYVY has no alpha channel, and I dont think that  
>> jit.qt.movie premulitplies alpha for you while doing the conversion?
> That is right. I was referring to the method where I store an uyvy  
> movie in the argb animation codec. the alpha channel stores the u  
> component.
>



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