[PD] blue and yellow alpha

marius schebella marius.schebella at gmail.com
Mon Oct 1 17:55:41 CEST 2007


even with pix_film and colorspace the pix_alpha is broken. what is the 
latest version of gem for mactel? i am using 0.91-cvs (july29).
marius.

IOhannes m zmoelnig wrote:
> henrik wurster wrote:
>> hihi this happened to me with GEM and quicktime movies...still didnt 
>> figure out how to use alpha blending yet !
>>
> 
> oh, for alpha blending you obviously need the data in a format that 
> understands alpha!
> [pix_film] on os-x outputs YUV by default, where there is now 
> alpha-channel, so you cannot apply an alpha-mask.
> make sure that you get your data in RGBA colorspace, either by sending 
> the [pix_film] a [colorspace RGBA( message or explicitely by using 
> [pix_rgba]
> 
> 
> fgmasdr.
> IOhannes
> 





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