Ben –
I get this problem when capturing thru a Blackmagic HD Pro card over SDI — no down converting, no firewire, rs-422 control.
I find the FCP capture tool to be quite buggy and a major pain the the butt. Batch re-capturing can turn into a crap shoot becuase of these phantom breaks. Along with the “media-mangler” this is the worst part of FCP and I wish to heaven that instead on ever newer features they would just fix the problems they have had for so long.
Herb Sevush
Zebra Productions