Wowza Streaming Cloud allows you to stream .mp3 and H.264-encoded .mp4 and .flv files in a live stream broadcast. Files being used for this workflow must be hosted on a web server, Google Storage, or Amazon S3 bucket. They cannot be hosted within the Streaming Cloud UI at this time.
Wowza Streaming Cloud downloads the file from the specified URL, and then starts the stream.
By default, files play once and then stop. To play a file on a continuous loop, see Play the file on a loop.
Another exciting feature of this workflow is you can use the mp4 as the source and then push that to FB as live.
In addition, you can schedule a file to automatically start streaming at a specific date and time. Then, prior to the scheduled start time, start the live stream or transcoder manually or use a schedule to automatically start it.
Learn how to set it up here: