search for: simultanteously

Hi all. I would really like to use Theora for the commercial product I work on... It's a Linux based DVR. Actually we use ffmpeg to produce MPeg4 short clips from 4 BNC channels in CIF resolution. I made a small module for our project that uses Theora... but I see that it gets a lot of CPU :( So I'm here to ask for any kind tips to reduce the CPU usage. - Hardware... do you think there