intelservice

Hi there, It has taken me to export a video about 30 mins in both mp4 and mpg formats. However the end result once exported is a black picture with no picture or sound. Please can you help? The shareable link is:- https://drive.google.com/file/d/1CKCIrLmnNnzTnPIbhjx6R3Up1xUtBzJX/view?usp=sharing