• • For full Screen in Final Cut 7 ...
View > Video Playback > Digital Cinema Desktop - Full Screen ...
then splat F12 [command + F12] and key again to leave full screen • •

~~ Latest Technical Settings from YOUTUBE [JUL 2014] ~~

In Final Cut Pro, select File > Export > Using Quicktime Conversion
[In QuickTime Pro, select File > Export > Export: Movie to QuickTime Movie]

Verify your settings by clicking "Options"

Video settings:

Compression Type: H.264
Frame Rate: 30 [or current]
[23.98, 24, 25, 29.97 also acceptable].
Data Rate: Automatic or restrict to 8000 for better streaming [5000 if 1289x720 for vimeo]
Key Frames: Automatic
Frame Reordering: Unchecked

Size: 1080 or 720 or less as desired [1920 X 1080 - 1280 X 720 ]

Audio/Sound settings:

Format: AAC
Click "Show advanced settings" and choose "Constant Bit Rate" as encoding strategy

Other settings:

Size: Choose the original size of the video
"Prepare for Internet Streaming": Fast Start - notnecessary now