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POBrowser Based Streaming Video/Audio (not progressive download)
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  1. POBrowser Based Streaming Video/Audio (not progressive download)
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    copied!<p>I am trying to understand conceptually the best way to deliver real streaming audio and video content. I would want it to be consumed with a web browser, utilizing the least amount of proprietary technology. I wouldn't be serving static files and using progressive download, this would be real audio streams being captured live. How does one broadcast a stream that will be reasonably in sync with the source? What kind of protocol is suitable?</p> <p><strong>Edit:</strong></p> <p>In research I've found that there are a few protocols: RTSP, HTTP Streaming, RTMP, and RTP. </p> <p><strong>HTTP streaming</strong> is somewhat unsuitable if you are streaming a live performance/communication of some kind because it relies on TCP (as its HTTP based) and you don't lose packets. In a low bandwidth situation, the client can get significantly behind in playback. <a href="http://msdn.microsoft.com/en-us/library/bb905764.aspx" rel="nofollow noreferrer">ref</a></p> <p><strong>RTMP</strong> is a proprietary technology, requiring flash media server. Crap on that. The reason I looked at flash is because they are extremely flexible as far as user experience goes. SoundManager2 provides an excellent javascript interface for playing media with flash. This is what I would look for in a client application.</p> <p><strong>RTSP/RTP</strong> is what Microsoft switched to using, deprecating their MMS protocol. RTSP is the control protocol. Its similar to HTTP with a few distinct difference -- server can also talk to the client, and there are additional commands, like PAUSE. Its also a stateful protocol, which is maintained with a session id. RTP is the protocol for delivering the payload (encoded audio or video). There are a few open sourced projects, one of them being supported by apple <a href="http://dss.macosforge.org/post/40/" rel="nofollow noreferrer">here</a>. It seems like this might do what I want it to, and it looks like <a href="http://en.wikipedia.org/wiki/Real_Time_Streaming_Protocol#Client_applications" rel="nofollow noreferrer">quite a few players support it</a>. It sounds like it would be suitable for a "live" broadcast from this page <a href="http://soundscreen.com/streaming/webcast/" rel="nofollow noreferrer">here</a>.</p> <p>Thanks, Josh</p>
 

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