I have problems with creating an image mask. I tried jpg and psd as alpha channel (black/white) but it seems like there's a bug. I also tried a "trace mask" (or whatever it is called in english - i use the german version) but it's not working either. Has anyone any idea how to fix it? Thank you in advance
Not quite sure, are you trying to make a track matte?
Might want to post a screendump, and show us what you are doing exactly.
it works with "luminance" instead of "alpha".. In CS3 you were able to take a black/white jpg (eg) to add it as "alpha-mask". Obviously that changed. I guess you can only use a transparent image like png as an alpha-image? Thanks anyway!