Apple proposes HTTP streaming feature as protocol standard
When Apple discussed the new features of the forthcoming iPhone OS 3.0, SVP of iPhone Software Engineering Scott Forstall said that the iPhone would be capable of streaming video and audio directly over HTTP. Apple also advertised HTTP streaming as a feature of QuickTime X, the update of its media architecture coming in Snow Leopard. What it failed to explain, at least publicly, is how this streaming would be accomplished. Fortunately, Apple submitted its proposed protocol last month to the Internet Engineering Task Force (IETF) in the hopes that it will become a ubiquitous standard.
Apple identified what it considers a few issues with standard streaming, which generally uses the Real Time Streaming Protocol originally developed by Netscape and Real in the late ’90s. The biggest issue with RTSP is that the protocol or its necessary ports may be blocked by routers or firewall settings, preventing a device from accessing the stream. As the standard protocol for the Web, though, HTTP is generally accessible. Furthermore, no special server is required other than a standard HTTP server, which is more widely supported in content distribution networks, and more expertise in optimizing HTTP delivery is generally available than for RTSP.
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