[joethelion]

"batch jobs" - THAT is the term that I was looking for!
for the life of me - I just couldn't remember what it was called!

...although I might try and see what happens if I just do alterations on it when it becomes a "video" first, then if it doesn't work out to my liking, then I'll go back to the original files and do that work

(as that might be the quickest way)

thanks for the help guys