User manual

ARECONT VISION USER MANUAL 59

Arecont Vision 425 E Colorado St, 7

Floor Glendale, CA 91205 8/1/2012

www.arecontvision.com

The following example illustrates a request to a camera with IP address 192.168.1.11 for full resolution

1600x1200 images as a part of the stream with a constant bitrate set to 2 Mbits/sec with maximum frame rate:

GET/h264stream??res=full&x0=0&y0=0&x1=1600&y1=1200&qp=26&ssn=1&doublescan=0&bitrate=

2048 HTTP/1.1\r\n

Host: 192.168.1.11\r\n\r\n

In response to the above request the camera sends a continuous stream of images separated by the

boundary separator “fbdr” in accordance with MIME multipart/x-mixed-replace format.

RTSP Request Format for Continuous H.264 Video Streaming

Reference documents for the RTSP/RTCP+SDP+RTP protocol implementation are:

• RFC 3550 for RTCP

• RFC 1889 for RTP

• RFC 2327 for SDP

• RFC 2326 for RTSP

• RFC 3984 for the data format of H.264 streaming over RTP

Unicast camera access:

The AVxxx5 series cameras support the RTSP protocol via TCP connections. Any RTSP request

sent to camera via UDP will be ignored. The actual video stream is transmitted by the camera using

RTP protocol. Arecont Vision cameras support two options for RTP transmission: RTP over UDP,

and RTP over TCP (RTP/AVP). The maximum number of simultaneously serviced unicast requests

or video streams is eight.

Multicast Camera access:

The AVxxx5 series cameras support multicast h.264 video streaming. Valid multicast destination IP address

range is: 224.0.0.0 – 239.255.255.255, default is 224.0.0.1. Destination multicast IP address range for SAP

is: 224.0.0.0 – 239.255.255.255, default is 224.0.0.255.

Accessing video stream via RTSP commands: