Well, i stopped using the built it Export - Apple TV because it produces a file way to big for my liking. I'm not archiving the programs i'm just watching them and throwing them away. The Turbo.264 software allows you to create your own presets. My apple tv one is set to a fixed size of 640 x 360 (widescreen) and 60% quality. Produces a file less than 700mb from a 2.5gb recording.What i do is this.
1: Record program using EyeTV then edit it to cut out the adverts etc.
2: Open the Turbo.264 app that came with my Gen 1 turbo.264 stick.
3: Click on the + button in the Turbo.264 app and navigate to the .eyetv file for the program you edited in step 1 (by default it's inside the Eyetv Archive folder in your profiles documents folder.
4: Select your desired export preset. Then press start.