HELP URGENT EMERGENCY

[Antwan]

You get it working again?
A YouTuber recommends this for the diamond.
His videos with it look high quality.
http://www.amarectv.com/english/amarectv_e.htm
There's a ton of stuff out there though.
Some video editors even let you capture before editing.

Edit: sorry about the short response.
The reason he suggested a new capture software is the one that comes with the device isn't known for being great. I know youre working on a big video so that sucks to read but my theory is maybe it's just your capture software. Anyone can find this info online. Just look up your capture device.
Good luck man.