You only need RTSP from your Ip cameras (static IP or DDNS)
Go to https://livebox247.com/?op=my_restreams
Click on Create new re-stream
- Re-Stream title
- Source stream URL: your camera rtsp url
- Rarget stream URL: rtmp url from youtube/ustream/twitch...
- Set Enabled to ON
Done. Enjoy free live stream your IP cameras on youtube/ustream/twitch...now!