Adding non-sip video sources to you Asterisk PBX. Presentation for Astricon 2014, Las Vegas http://www.astricon.net

1. Connecting Non-SSIIPP IIPP CCaammeerraa ttoo YYoouurr PPBBXX
Tom De Moor
Control Alt Dieliet

2. Session content
• Adding a non-sip ipcam to your PBX
– Creating V4L2 loopback devices
– Binding a rtsp-stream to the loopback device
– Connecting the loopback device to sipclient
– Controlling the camera with dtmf-tones
– Demo

3. About me
• IT-manager non-profit VCLB Gent
(Belgium)
• Developer at Control Alt Dieliet
–OpenLDAP addressbook for Digium
phones
–Twitterclient for Digium phones
• tom@controlaltdieliet.be
• ctl_alt_dieliet

4. V4L2 loopback devices
• Kernel module
• Creates "virtual video devices"
• Applications read it as ordinary video
device
• Video doesn't come from a capture device
• https://github.com/umlaeute/v4l2loopback

5. Demo
• modprobe v4l2loopback devices=4
• creates /dev/video1-4

6. Binding the rtsp-stream
• ffmpeg
• ffmpeg -i rtsp://username:password@ipaddress
-s 1920*1440 -r 20 -f v4l2 /dev/video1
• Use LAN, not WAN

7. Connecting to a sipclient
• Linphone
• Linphonec: console based sip-client
– With video-support
– With auto-answer
– Able to run multiple instances

8. Demo linphonec

9. Commands with DTMF
• Most of those cameras can be controlled
through http
• Listen through AMI to events and move
the camera around

10. Demo && Dangerous Demo

11. Questions?