It sounds like you are using a StreamType of "live-record" instead of "live" in your Application.xml file? Do you want to record the streams for future playback? It does not sound like it if you are wanting them gone when the stream ends.
What player are you testing playback in? With a StreamType of "live" you should test playback in one of the example players in [install-dir]/examples/LiveVideoStreaming.
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