Hi Chris, thanks again for helping me get this "codec issue" sorted out, and for taking it into consideration for the CVS GEM.
chris clepper wrote: > Can you fit all 48 clips uncompressed into RAM? A 1 second clip at > 640x480 30fps in YCbCr is about 18.5MB (double that for RGBA) which > would allow 3 and a half minutes of video to fit in 32bit address space. I didn't even think about addressing! I just assumed that if I had all my clips in buffers, then they would be more quickly accessible. Thanks for pointing that out. Guess I'll need to read a bit more about how buffers are accessed. Suggestions? Use the Source? > Try creating a RAM disk and copy the uncompressed clips into that. RAM > disks might even allow for greater than 32 bit sizes. For shorter clips, loading direct from the HD is pleasantly faster than I expected. But when the clips get bigger, I might look into a RAMdisk. I found quite a few tutorials on making a RAM disk on OSX via Google, using everything from command line to Freeware. One more question: if I use the "ram" message to [pix_film], does it stay in RAM when I load another one? My guess is no, of course. I suppose if I really needed speed I could make 48 [pix_film] instances, each with the clip loaded to RAM. But of course, using a RAM disk might be more efficient at that point anyways! best, d. -- derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista ---Oblique Strategy # 164: "Twist the spine" _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
