Tim Boykett wrote:

hi,

has anyone had any experience using (multiple) gem(s) to output several videos simultaneously on a multiheaded (linux) box?

the questions that arise as we ponder this is how much CPU gets used to decode the video, how much to render, how much the graphics cards can take away effort from the CPU, what sort of idea of harddisks can make the data transfer more efficent, etc.

any experiences? any suggestions?

cheers,

tim

hello

with a P4 2.ghz and very important, a graphic card with its own memory (with restricted drivers, opengl support, here nvüdüa ) under ubuntu can i buffer (with pix_buffer) more than 8 videos all at 16 seconds length but this are not videos from a harddisk, but directly from one webcam --> cpu uses less than 10%...so the graphiccard does here his job very well. but at this point pd has nothing to handle with the harddisk.

i dont have experiences reading non-live videos (from harddisk) and Gem.

When i want to render the gemwindow to harddisk with pix_record and pix_snap i have a cpu-load of 100%, tested with all available codecs.. sometimes pd crashes, sometimes i got corrupt movie-files, few times i got playable movies. i got not a stable solution now for rendering.

cio

moritz