Axis 207W Tunneling RTP over RTSP over HTTP

[Raybert]

This is a repost of a previous topic but now I know a bit more about what to ask... I think.

The Axis 207 manual says it supports tunneling RTP over RTSP over HTTP to allow the cam to be viewed over a standard port 80 http connection. This is necessary to enable the cam to be viewed from behind corporate firewalls where only http/80 is open.

I believe the way to implement this is to create a webpage on a webserver that is available on port 80, say on my ISP, and include the necessary html code to combine the streams and create a link to the singe http path.

Has anyone done this? Does FrontPage or other web developer/editor s/w support creating this sort of feature? Or does it require custom coding? Does anyone have a code example?

Still learning... by necessity.

[Administrator]

As far as I remember RTP/RTSP uses port 554 so that would have to be open on your firewall. The only thing that comes to mind right now is changing the RTP/RTSP port on your camera to port 80 and then trying to stream it to a webpage with a Quicktime streaming video looking to the RTP/RTSP protocol of the camera.

Hope that made sense
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[Raybert]

Yes, I know port 554 (not reachable thru corp firewall) but I think what happens is port 554 (and 80 or whatever the cam's http port is set for) is open between your home router and your ISP web page server where you have established a web page with a link to the cam . Then you connect to that page through port 80 of your corp firewall and your web page uses specific html coding (this is what I am not sure about how to do yet) to combine everything onto the one outgoing http port.

Here are some links I looked at but it's not quite enough for me to undersdand exactly how to implement.

This is an excerpt from the second link below. Note the last line.

Putting It All Together
Here we go. You can send MPEG-4 video by wrapping the video steam in a RTP packet, wrapping the audio stream in another RTP packet, then wrapping each RTP packet in a UDP packet, then controlling the stream using RTSP. You can encapsulate the RTP in http if necessary (via an external server).


RTP/RTSP info links
http://developer.apple.com/quicktime/icefloe/dispatch028.html
http://www.vbrick.net/Topics/RTSP.asp

[Administrator]

Interesting stuff. I haven't fooled around with it before but I would like too. Right now I don't have a camera that supports RTP/RTSP so I can't do any testing. Are you going to see if you can get it working?

I can probably get my hands on a camera with RTP/RTSP within the next few weeks to try and get a script running.
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[Raybert]

I am going to try but I'm not sure when I'll get around to it. This is a little beyond my level of knowledge. At least I think I know what I don't know, I think... if you know what I mean.

I was hoping to not have to invent the wheel on this one but I haven't found any info that would make this simple for a non-developer, i.e. your basic end user like myself. If you get a cam and figure it out it would be much appreciated. I am sure there are many of us in the same boat regarding closed down corporate firewalls.

There are obviously ways to make it work since there are zillions of commmercial webcam feeds I can access via our firewall's open http/port80. I have viewed their sources and they seem to be moslty done with Adobe Flash. Perhaps there's some way to use that technique to create a webpage with a Flash feed for our webcams that we can access in this manner? Again, this is beyond my level of knowledge.

[Administrator]

Yeah I heard you might be able to do it with Flash. Again it's something I want to try I just haven't had the time too yet.

When I get a camera with RTP/RTSP, I will do a few tests and let you know what I find.
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