[Tom Graves]

[John Rofrano] “CineForm is an AVI codec within Vegas so you have to:
Select Video for Windows (*.avi) as the type
Then start by selecting the HD 1080-60i YUV template.
Press the Custom… button
On the Video tab change the Frame size: to HDV 1080 (1,440×1,080)
Change the Pixel aspect ratio: to 1.3333
Change the Video format: to CineForm HD Codec 2.1
Change the template name to “HDV 1080-60i CineForm” and press the Save icon (diskette)
Press OK to continue”

Thanks, this was really helpful in finding the right render options for 5D footage in Vegas!

I ended up using 1280×720 with a 1.000 pixel aspect ratio and it seemed to produce results that matched the original video aspect ratio, since using 1440×1080 gave me elongated results