Thanks so much for your response Jon,
Dv tapes were filmed on the camera.
running from camera via rca to canopus advc55 which is then connected to computer with a fw600->fw800 cable w a thunderbolt adapted
into macbook pro retina 2015
multiple TBs of avail storage
the capture window show the video playing the entire time until i end capture with esc but then only a fragment appears to be captured
tried in imovie and it generates a series of individual fragmented clips that have slight jumps in time.
the camera is still operational and the problem is systemic over all tapes. so i’m not sure what the weakest link is.
but would love to some sort of brute capture that ignores any problems on incoming material / rewrites tc / just ingests the raw footage warts and all, clean or unclean.