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RTP payload format definitions for X-SORENSONVIDEO and X-QDM?

Subject: RTP payload format definitions for X-SORENSONVIDEO and X-QDM?
From: Ross Finlayson <email@hidden>
Date: Mon, 23 Sep 2002 03:26:02 -0700

On examining the RTSP protocol exchanges for various files streamed from the DSS, I've noticed that three non-standard MIME types are occasionally used in RTP streams: X-QT, X-SORENSONVIDEO, and X-QDM.

I see that the RTP payload format for X-QT is defined in
	http://developer.apple.com/quicktime/icefloe/dispatch026.html

But what about X-SORENSONVIDEO and X-QDM? Is there a document anywhere that defines these RTP payload formats?

(Yes, I realize that these *codecs* are proprietary, but I'm asking only about the RTP payload formats - i.e., the description of how the (otherwise opaque) codec data is packed into RTP packets, whether there's an extra header (after the RTP header), etc. etc.)

	Ross.
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