What OS and GEM version?
On OSX the pix_film/movie object defaults to YUV. Send a 'colorspace RGBA' message to the object before loading the clip if you need the alpha from the clip. pix_image uses RGBA by default. If you have problems with PNG the try uncompressed or TIFF.
Also, put the alpha object after the pix_objects.
On 2/16/07, Item State itemstatechanged@yahoo.de wrote:
hi,
i'm trying to port a former jitter patch to pd/gem (http://lists.puredata.info/pipermail/pd-list/2006-11/043853.html). i have problems getting overlayed images to display properly. i have four rectangles fed by pix_movie, then i need to fade in and out a rendered text image. i tried using pix_image -> pix_texture and [alpha 1]. the images are .png with transparent portions. i once got it to display correctly, but now if i open the patch, the videos all show up with wrong colours:
http://sciss.de/test/Bild%201.png (see attached patch gemTest2.pd)
once i remove the pix_image and pix_texture, save the patch and re-open it, the videos show up correctly again:
http://sciss.de/test/Bild%205.png (see attached patch gemTest2B.pd)
... also, i don't know how to fade in the text (the "action" string). is there an alpha-channel multiplier for pix_image? thanks for hints!
is it possible to stretch the video so that the rectangle stays the same, but only the top part of the video is shown (vertically zoomed without interpolation, so that you can see the pixels)?
ciao, -sciss-
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