s3fs probably won't work very well to stream from. If you want to try it you can set up a Wowza application that uses "default" stream type and the Application.xml /StorageDir is set to the s3fs mount point. But this is not going to work with the vods3 application.
And the vods3 app is what you should be using to stream from, and it does not involve s3fs.
s3fs is good for recording to, but not streaming from.
Take a look at the Wowza EC2 for instructions on using vods3: