Are you producing animations for multiple formats? Chances are likely that you'll often need both a DV and a Standard Definition output. Simple enough right? Render twice if you like wasting time that is. A better way is to use two output modules.
Set your initial composition up at the larger size , such as 720 X 486.
Add the comp to the render queue and set the Render Settings. For best results choose to Field Render with lower field first.
Next, set your output module for the first video and choose the settings you need.
For the Digital Video render, add a second output module by choosing Composition> Add Output Module.
Set this new output module for DV by choosing the QuickTime DV NTSC 48kHz setting.
In the second output module, the one for DV, we need to remove six lines of information. It is important to preserve field order. Click on the Output Module name to open its settings.
Check the Crop box and specify to crop 2 lines from the top and 4 from the bottom.
Name both output modules, be sure to clearly identify the DV render with a unique name.
Close all open windows except for the render queue.
Save your work.