After selecting the 640×480 iPod template, click the “Custom” button (beside the “Template” box) and then the “Video” tab.
Choose “Custom frame size” in the “Frame size”” box and set it to 1280×720.
Modify any other templates as desired.
Here’s some settings )courtesy of Jonathan Neal on the Sony Vegas forum) that I’ve tried and found to work quite well.
It was designed for Facebook/YouTube but the higher settings should work quite well for your application as well.
Ignore his frame sizes and use yours.
** Be sure to save this as a new template for future use.
Project
Template: Internet Fullscreen (or Internet Widescreen)
Description:
2 Mbps VBR 640 x 480 (870 x 480 on Internet Widescreen)
192 Kbps CBR 44.1 Mhz
Use this setting to create an MP4 file best fashioned for Fullscreen Youtube/Facebook upload and playback.
Video Rendering Quality: Best
Video
Frame Size: (Custom frame size)
Width: 640 (870 on Internet Widescreen)
Height: 480
Allow source to adjust frame size: false
Allow source to adjust frame rate: true
Pixel Aspect Ratio: 1.0000
Number of reference frames: 1
Use deblocking filter: true
Constant Bit Rate: false
Variable Bit Rate: true
Two-pass: true
Max: 10 Mbps (10,000,000)
Avg: 2 Mbps (2,000,000)
Audio
Sample rate: 44,100 Hz
Bit rate: 192,000 bps