Long video process failed a few seconds before ending

I was processing an old Christmas movie I recorder from my TV. I don’t know exactly how long it processed, but it was around 22 hours. I was sitting at my computer, watching the last few minutes of processing and at about 0 to 10 seconds there was an Error message and a red “x” (please see attachment). Obviously, I am frustrated at this annoying waste of time, but more than that, I want to avoid this kind of situation in the future. Can you suggest anything?