Filter Forges command-line batch rendering is great but a bit too difficult for people to use. It only renders the presets of an ffxml plus you need to make an extra xml file discribing what to render exactly.

This app creates these files for you. You upload an ffxml file, set start and end values for the controls (and some additional values).
When you hit the submit button you download a zip file containing three files:

First, upload your ffxml file. All initial values will be derived from the default preset.

choose file