Mostly everything you're doing is correct: don't upload interlaced unless you're starting with interlaced footage (ie from interlaced live video).
Your resolutions and pixel aspect ratios should be as follows:
HD: .........1920 x 1080 or 1280 x 720 ........... 1:1 (square pixels)
HDV: .......1440 x 1080 ................................. 1.333333:1
NTSC: ......720 x 480
or 720 x 486 ................. 1:0.9117:1 or 1:1.212 for anamorphic widescreen
PAL: ........720 x 586 .................................... 1:1.0664:1 or 1:1.422 for anamorphic widescreen
Acceptable frame rates can be found on
this chart.
One last important note: 75% quality is
not acceptable for professional buyers. If you're using the MJPEG codec you should never consider anything lower than 95%. Expect filsizes of anywhere from 500mb to 1000mb for a 30 second clip.
ETA: Thought for admin: pixel aspect ratios should be listed alongside dimensions and frame rates on the chart linked above.
(Edited on 2008-08-19 22:27:43 by EricFerguson)