Hi all,

I managed to compile gem with gmerlin and now it reads my MPNG film well, however, it still does not render with a transparent background. I have a series of png images which have the background removed in places so that whatever is underneath shows through. I've converted them to an mpng .avi using

ffmpeg -i man%04d.png -vcodec copy reflect1.avi

If I do the reverse,

ffmpeg -i reflect1.avi -vcodec copy reflect-alpha%04d.png

Then the resulting images maintain the transparent background, so I know the conversion process is working properly.

Now, when I import this film using pix_film, I just can't seem to make it overlay the way I want it to. The (transparent) background does not appear transparent.

If I replace pix_film with pix_image and the original .png images in my patch then everything works the way it should.

The reason I'm trying to use videos is that I have thousands of images (most don't need to be transparent) and it loads images/draws faster than pix_image and pix_multiimage tries to load everything into memory at once (kills my laptop around 50 images) and atm I'm too lazy to figure out a buffering system.

Can anyone suggest an alpha-enabled codec that might work properly with Gem? Am I missing an object somewhere? Is there a good non-video way to do this? Has someone already made VJ mixing patches that might help me?

Thanks,

-martin