user4976: At present I have a software solution that involves 4 analogue cameras connected to an encoder that is plugged into my router. My application then reads the rtsp feed from the ip address from this connection.
The problem I have is that it seems difficult to get installers for my product for various reasons (based here in UK).  If I used wireless digital cameras then it would not need qualified electricians to install these analogue cameras.  
But, all the products I have seen for all this is that the wireless cameras uses it's own software to deal with rtsp feeds. I cannot seem to get access to the feed (I am using VLC).
Are there any wireless cameras on the market that I could look in using?
Additional
My C# Desktop app is looking for an rtsp feed from my video encoder that is just a black box that decodes analogue signal and encodes it to a digital output.  I am trying to create a product that will be easy to install but as the industry stands in the UK getting installers to install 4 analogue cameras is difficult. If I can remove the need for installers then that is a great step forward for me.

user3295: Don't have any experience with Wifi Security Cameras but this one here would fit your specs, aswell as the other IP cameras from that company:
http://foscam.us/wireless-ip-cameras/foscam-fi9805w-wireless-ip-camera.html
I have not used their cameras and can't tell you if they are any good.
Actually a lot IP enabled security cameras fit the specs. As long as they have a web interface they offer a stream usable by VLC, you just have to visit their web interface and get the url for the stream. VLC understands more than just RTSP, RTMP f.e. is much more used for web streaming nowadays.

4976: <p>At present I have a software solution that involves 4 analogue cameras connected to an encoder that is plugged into my router. My application then reads the rtsp feed from the ip address from this connection.</p>

<p>The problem I have is that it seems difficult to get installers for my product for various reasons (based here in UK).  If I used wireless digital cameras then it would not need qualified electricians to install these analogue cameras.  </p>

<p>But, all the products I have seen for all this is that the wireless cameras uses it's own software to deal with rtsp feeds. I cannot seem to get access to the feed (I am using VLC).</p>

<p>Are there any wireless cameras on the market that I could look in using?</p>

<p>Additional
My C# Desktop app is looking for an rtsp feed from my video encoder that is just a black box that decodes analogue signal and encodes it to a digital output.  I am trying to create a product that will be easy to install but as the industry stands in the UK getting installers to install 4 analogue cameras is difficult. If I can remove the need for installers then that is a great step forward for me.</p>
 3295: <p>Don't have any experience with Wifi Security Cameras but this one here would fit your specs, aswell as the other IP cameras from that company:
<a href="http://foscam.us/wireless-ip-cameras/foscam-fi9805w-wireless-ip-camera.html" rel="nofollow">http://foscam.us/wireless-ip-cameras/foscam-fi9805w-wireless-ip-camera.html</a></p>

<p>I have not used their cameras and can't tell you if they are any good.</p>

<p>Actually a lot IP enabled security cameras fit the specs. As long as they have a web interface they offer a stream usable by VLC, you just have to visit their web interface and get the url for the stream. VLC understands more than just RTSP, RTMP f.e. is much more used for web streaming nowadays.</p>
