USP Pro makes it easy to specify Custom Post Formats for submitted posts. This quick tutorial explains how to do it in one easy step.

Video Tutorial

Written Tutorial

To set a Custom Post Format for any form, just include the following line:

<input name="usp-custom-format" value="video" type="hidden">

Replace “video” with the post format of your choice. Here is a list of available formats. Note that Custom Post Formats must be supported by your theme in order for this to work. See Adding Theme Support for more information.