"Configurable capture
"By default the app captures at 15fps, which should work for most screencasts, but you can change it if the default doesn't work for you.
"Also by default. RecordMyDesktop, encodes the video after it's done capturing, which requires temporary storage space to store the captured images. If you don't have the space, you can encode on the fly, which requires a lot of processing power. Another option designed to make RecordMyDesktop work on low-power boxes is the ability to disable compression, which reduces overheads at the expense of taking more disk space.
"Finally there's the option to enable quick subsampling, which again helps ease the load on the processor - just use it as a last-resort, as it might add blur to the videos. We used RecordMyDesktop on a 1.4GHz Celeron laptop with 1GB RAM and a dual-core Intel desktop, and it worked just as well on both machines."
