Canon Elph Powershot Sd960

Video editing with a CANON POWERSHOT?
I have a Canon Power shot SD960 IS (Digital ELPH). I’m trying to edit my video ON MY CAMERA (b/c it’s too large to upload to my computer) but when I try to save it, it won’t let me create a new file. The only options are “overwrite” or “cancel.”
Can you help me create a new file? I desperately need to upload this video.
Thanks!!
I’d suggest upload and then edit. Apparently your camera doesn’t want to do it so use your computer instead.
Too large??? Never heard of that. It may take a while but I wouldn’t think it would be too large.
Canon Powershot SD960 IS HD Test (All Modes)