[mythtv] "New" Feature: RTSP streaming for myth backend

belcampo belcampo at zonnet.nl
Sat Feb 18 13:32:38 UTC 2006

On Saturday 18 February 2006 06:37, Stormboy wrote:
> belcampo wrote:
> >>> Some probably interesting alternatives upnp at
> >>> https://sourceforge.net/forum/?group_id=89768 or
> >>> http://www.cybergarage.org/
> >>> if things are compiled with all dependicies one can run 'mediagate
> >>> --mythtv' and with upnp devices like networked dvd-players or vlc with
> >>> upnp compiled in you can access all myth recorded stuff 'everywhere'.
> >>> Searching for upnp in this list gives you more people which are
> >>> interested in these features
> >>> _______________________________________________
> >>> mythtv-dev mailing list
> >>> mythtv-dev at mythtv.org
> >>> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
> I am not sure how you jumped from RTSP to UPnP.  UPnP is something that
> can sit aside RTP and RTSP.
> RTP is a protocol for transmitting and receiving media (i.e. a transport
> protocol).   RTSP is a protocol for controlling a stream, and may use
> RTP for the transport protocol.  See http://en.wikipedia.org/wiki/RTSP
> UPnP (http://upnp.org/) is a standard for discovering devices and how to
> communicate with those devices, and includes a set of standards for what
> the device services specifically are.
> There are at least 2 UPnP standards that will be relevant to making
> MythTV available as a UPnP device: the Media Server and Media Renderer
> (http://upnp.org/standardizeddcps/mediaserver.asp).  MythTV could also
> act as a Control Point, allowing a user to select media located on a
> Media Server and control the playback of media on a Media Renderer.
> The MediaServer has a Content Directory service that allows clients to
> browse and search for media content on the server.  It will also need
> some sort of services to deliver that content.
> The way media is delivered from the Media Server to the Media Renderer
> is open.  Currently most UPnP Media Renderers can receive media content
> over HTTP, and most Media Servers can transmit over HTTP.  However,
> delivering the media content over RTP is allowed as long as the server
> and renderer support it.  RTP is a preferred method for delivering media
> for a few reasons.  You may multicast the stream so that no additional
> bandwidth is used when delivering the same stream to multiple clients.
> Furthermore, there is less overhead in delivering the stream (it can use
> UDP).  Additionally, a control packets may be examined to determine how
> well the stream is being received.  You may synchronized many streams.
> I am sure you can think of more.
> If MythTV can support these, it will integrate with a greater set of
> audiovisual equipment.
> I am currently looking into this for integrating distributed home
> entertainment, security and home automation.  The project I am working
> on has a bit to give to MythTV users if MythTV is to go UPnP (both
> server and renderer), even more if it incorporates RTP (and RTSP).
> _______________________________________________
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> mythtv-dev at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
I looked at it from my simple point-of-user-view, having data here and want to 
watch it there, I have no clue about the underlying technique. 

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