I just lost an hour long MP4 when my game then subsequently Bandicam crashed. It created a 14gb corrupt file, but it looks like there is no way to fix or recover any of it, and for me no way to recreate it. Yes, I now know if I'd used AVI there's a chance I could have salvaged it. Yes, I know I should have been switching out every 10 minutes to hit stop then restart (I did at first then got distracted and forgot).
My suggestion is an option to automate the 10 minute break into multiple smaller files. I couldn't find this in the settings or google anyway. I would have used it today.