Premiere CS4 crashes with MXF XDCAM files

Question

I have MXF files coming from MP4 XDCAM EX files (converted with Sony EX Browser) and MOV XDCAM EX files (converted with Convergent Design File Converter) both from JVC HM700. Premiere imports all files and if I have a simple timeline it works fine. As soon as the timeline gets longer Premiere stucks and eventually crashes.
Any idea?

Answer 1

I use Clip Browser to convert footage done in MP4 but also Convergent Design's File Converter 1.3 to convert footage shot in MOV.
in Premiere on MAC both MXFs work fine is just that in long (over 15-20 minutes) projects and where there are 2 levels of timeline (I'm sincing the 2cameras) or when I do a simple scale effect (to see the level underneath) everything stucks, get very slow and eventually crashes.
Actually a single MXF file plays better than a MOV XDCAM file and almost the same than a MP4 XDCAM file.. but as I said.. when it gets to handle many together.. things don't work so good anymore