Only 1st RTMP bitrate for HTTP Live Streaming works

Using this on AWS with cloudfront/cloudformation.
When I created new Cloudformation, my first RTMP will works. i.e I publish at 500kbps.
Then if I stop and send single bitrate at say 800kbps, it will not works. i.e OSMF will keep buffering.
SSH to my EC2, I restart FMS server, also no different. When I republish at 500kbps, it works again.
Then, Create fresh new Cloudformation, and send 800kpbs this time, it works fine.
So my conclusion, I can only send 1 known bitrate, and cannot change to another, ( but can change resolution).
Must be something wrong here. What exactly happened?

Hi,
When you first publish with 500 Kbps and then superimpose with 800 Kbps, it may not allow you to do so. Since on republishing it appends to the previous streams and it might not work with streams of two different bitrates. My suggestion to you is - try publishing in record mode. This will clear old streams and should work like a dream.
To publish in record mode, use this publishing string;
livestream?adbe-live-event=liveevent&adbe-record-mode=record
Thanks,
Shiven

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