Agreed. We've just started working with Canon 5D 1080p h264 video files in Premiere. Even on a new Core i7 machine, with RAID 0 disks, Premiere just doesn't wor

Agreed. We've just started working with Canon 5D 1080p h264 video files in Premiere. Even on a new Core i7 machine, with RAID 0 disks, Premiere just doesn't work very smoothly with h264 video (we convert it to Cineform Aspect HD as an intermediate). MPEG2 by comparison, is lighting fast. If you go back to when HDV was new, people were bitching about how slow MPEG2 was compared to DV (since it wasn't all I frames). That's just the way progress works.