Convertio is a free online MP4 to DivX converter, which you can choose videos from PC, URL, Google Drive, Dropbox and more other sites. Moreover, you can have a batch process the conversion for multiple MP4 files at a same time with an account.

Pros
Import the MP4 files from a folder, Drop box, Google Drive and more others.
Tweak the frame rate, video quality and adjust recording area for DivX files.
Provide a simple user interface to transcode the MP4 files into DivX codec.

Cons
You should download the converted MP4 files to your computer.
It comes with some annoying Ads and slow conversion speed.

Top 3 MP4 to DivX Converters Online for Free: https://www.free-videoconverter.net/mp4-converting/mp4-to-divx/