There are two screen Capture software for Fedora which takes less space and faster to run.
1. tk-record my Desktop or qt-record my desktop
to Install the above software, login as super user (root) and then give the command
yum install istanbul
yum install gtk-recordmydesktop
yum install qt-recordmydesktop
The output file what you will get will be ogv (OGG VORBIS) format which you can convert to avi or mp4 using any video converters