What do the “half size” and “full size” options do?
These options refer to the resolution your video is captured and played back in. For example if you select “full size” and run your game in 1024×768, your video will be recorded and played back in that resolution. If you select “half size” and run your game again in the same resolution, the resulting video captures will be played back in half the resolution and the file size of the videos will be considerably smaller.
