This is the ugly side of capturing full tape loads – if the ingest fails, you’re out 40+ minutes.
I’ve been in your situation before – its rough, and can take some experimenting to find effective solutions.
A couple things to check –
1. Is the range of timecode that you are attempting to capture a valid range for the tape? If the capture hits the end of tape, it will bomb it out.
2. Try capturing one tape at a time, rather than batching a whole list of tapes. That way, if a capture goes bad, you only lose that tape.
3. Try using head cleaner on your camcorder, or consider renting a deck. Camcorders are not designed for hours of playback on a daily basis. And a dropped frame will cause the condition that you are experiencing.
4. Consider using the media manager to re-ingest your current timeline, rather than all of your source footage. If this is practical, it can save you a lot of time.
Does this happen sporadicly, or just with a certain tape?