Re: Video in recording is too slow
I have 60 fps on my AMD64 Athlon using Cinerella and a USB Logitech. So, my suggestion would be your software which is running your camera. I will add I had to tweak and pipe in the options of Cinerrella. I would have some experimenting to do to reinstall the webcam on a new Ubuntu install. I haven't used my webcam now in two years. My goal back then was face-recognition. Cinelerra would be like shooting a fly with a canon.
If you have a Java JDK installed you could add processing.org.
If you are inclined to coding, before you begin you should also google:
java processing webcam
From that search term, I do see Ubuntu installs of the processing framework with a webcam attached.
But, making the hardware link to the software in Linux is different for every machine using the varieties of webcams, eg built-in, firewire, USB, etc.
"You don't do art because you want to, no, you do art because you have to." -- M. Buonarroti