The Write module lets you render and output the connected image information.
To add a Write module:
||In the Module Library, select the IO tab.
||Select the Write module and drag it to the Network view.
||In the Network view, connect either the final Composite module or any other module which outputs an image you want to render to the Write module.
Using the Write module, you can export your project in both QuickTime movie and image sequences. You can export one format at a time, or both simultaneously.