Just a quick note it seems the 34xx series dome cameras now support mjpeg streaming via url (finally) as of firmware 3.11.13-AC. The url to use is "
http://xxx.xxx.xxx.xxx/cgi-bin/cmd/system?GET_STREAM". To get it working you need to do a few things.
1. The device is set to use MJPEG codec
2. B2 Header has been disabled. (Uncheck Enable B2 Header in the Video Setting screen)
3. Audio In must be disabled.
Testing and working with the latest icamsource and an ACTi ACM-3401. I will test more versions of these cameras as I get my hands on them.