I downloaded processing for Linux (1.5.1) with the newest test version 20110709 of GSVideo.
Whenever I try to run any of the examples, it complains about a number of gstreamer library files: wrong ELF class: ELFCLASS32. It seems to look for x86_64 libs from /usr/lib and not /usr/lib64 as it should. My system is Fedora 15 x86_64. Here's a clip: