I first took a sample video from here and then encoded it using the various presets. The files were then copied to the QNAP, and then accessed from “Video Library” on the 360 (note: not via the Media Center Extender).

Original File
Resolution: 1440 x 1088
Bit Rate: 11035 kbps
Video: WMP v9 (VC-1 Simple/Main)
Audio: WMA v2 9 320 kbps, 44100Hz 320 kb/s tot (2 chnls)
File Size: 67.1 MB
Played wonderfully well on the 360.

Encoded with iPhone Preset
Resolution: 426 x 320
Bit Rate: 1490 kbps
Video: H.264/MPEG-4 AVC
Audio: MPEG-4 AAC LC
File Size: 10.1 MB
Played on the 360 but had to change display mode.

Encoded with Apple TV Preset
Resolution: 720 x 540
Bit Rate: 4959 kbps
Video: H.264/MPEG-4 AVC
Audio: MPEG-4 AAC LC
File Size: 33.7 MB
Played on the 360 but had to change display mode.

Encoded with Xbox 360 Preset
Resolution: 1440 x 1080
Bit Rate: 9385 kbps
Video: H.264/MPEG-4 AVC
Audio: MPEG-4 AAC LC
File Size: 63.8 MB
Played on the 360 but had to change display mode.

(For reference, PAL DVD resolution is 720×576)

All stats were taken from the video files with G-Spot.

Xbox Live Arcade

Catan (800 points)
Sensible World of Soccer (800 points)
Peggle (800 points)
Bomberman Live (800 points)
Small Arms (400 points)
Uno (400 points)
Tetris Splash (800 points)
Texas Hold’Em (800 points)
Super Street Fighter II Turbo HD Remix (1200 points)
Worms (800 points)
Carcassonne (800 points)

Xbox Originals