|I think you can change the format and size if needed.|
That stupid company was a pain in behind.
There are other ways and formats you might be able to get to work. Depends on how you need the file in the end.
See things like VLC (or portableVLC) and it might work to save the video.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10