Procedural Compositing with Batch > Batch: Node Reference >
Resize Node

Use the Resize node to change a clip's resolution, frame depth, and aspect ratio. You can also pan and scan the destination image relative to the source. You can then select and animate the portion of the source clip that appears as the destination clip, and process to create the result image.

TipYou can use Resize to output, for example, an HD project to a lower resolution for quick viewing.

For more information, see Resize.