I've exported QuickTime files from Final Cut Pro for VFX artist using CS5. The file format is Uncompressed 10-bit 4:2:2 23.976. When the files are handled in CS5 at 8bit they are frame accurate, however when the comp is switched to 16bit or 32bit the first frame is repeated (thus causing the comp to render out a frame short at the tail). I tried Uncompressed 8-bit as well and same issue. I tested ProRes and don't get the repeat frame at any bit depth. As a note using AJA kona 3 driver 8.