So you have that video of your cat doing that thing and that other video of your brother getting startled by the can of joke peanuts, and now you’re thinking “I’m such a wicked director I’m going to edit these films together and put them on the Interwebz.” Ok. That sounds important.
In Ubuntu there is a little utility called avimerge which (wait for it) merges avi files.
avimerge -c -o [WhatYouWantItCalled].avi -i [a].avi [b].avi
I know; you’re thinking “dude, that looks like something you type into the terminal window; how am I supposed to do this?”. Fear not, little tomato. You just want to replace the stuff in the square brackets with your stuff. A and B are the two files you are wanting to merge and WhatYouWantItCalled is, well, I think you can manage that one. Yours might look like this:
avimerge -c -o ScorseseMe.avi -i CuteKitty.avi BroJumps.avi
If your file names have spaces you’ll have to tell the shell (the terminal) how to interpret them:
avimerge -c -o Scorsese\ Me.avi -i Cute\ Kitty.avi Bro\ Jumps.avi
Could it be any easier?
Have fun with that.
-- ==