This one works easily, and sets up easily..! (HD Cam Ready, too)

I just tried this with web cameras that are on the internet in demo-mode, and anonymous login, from schools.
Its the best Generic IP WebCamera App so far..!
Tried on my iPad2 -16GB -wifi only
using iOS 7.1.2

It was so easy to get it working, compared to the other Apps, similar to this, that I tried.

I read another review here, saying it didnt work with their local camera, but if you put the http with the colon : and the // before the IP address, Im sure it would see it then.

It needs to simulate thats its on a website, so just using the IP address isnt enough.

You also need to be on the same network as the camera shows, of its own IP, and the IP the iDevice is on.
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To the reviewer (mroehricht) mentioning it didnt work with iOS 8.1.2 and your H.264 Stream...
Have you tried the latest iOS update?
As of this reviews date, its at iOS 8.3
Maybe its an iOS issue, and not this App. :)
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You can google for demo internet IP camera links, or even try this site (below) to start, and test your settings with this App.
Use your browser to see the links I tried, at the following address...

webcamxp[dot]com[/]publicipcams[dot]aspx

Remove the brackets [ ] before using the above address, and replace the word dot with a real dot character. :)

The web cameras at the site above use anonymous login for both the name and password.

In other words... Just put the word anonymous in both fields of the Apps settings, where its asking for the name and password. :)

And use the Default Auto Detect option, for the type of Connection of the camera.

ReviewMonkey001 about CamViewer for IP Webcams