Operation Manual

NOTE: When you change video stream configuration settings, the camera automatically adjusts the bit rate. Choosing a bit rate below

the camera’s automatic setting might reduce video quality and limit stream configuration options.

I-Frame Interval: Determines the number of partial frames that occur between intra-coded frames (I-frames) in your video stream.

I-frames are complete images, used as a reference for change in the following video frames. Following an I-frame, the camera will

capture and encode only video data in the scene differing from the I-frame until the next I-frame. This setting is only available for H.264

video streams. Increasing the I-frame interval can improve video compression rates and reduce the size of video data; however, higher

values are recommended only for highly-reliable networks.

Quality of Service (QoS) for Different Services Code Point (DSCP): A mechanism for prioritizing network traffic. This setting is

available only with H.264 and MPEG-4 compression standards. Your network must be QoS-aware to take advantage of this setting. If

you are unsure if your network is QoS-aware, contact your network administrator.

Endura Signing: Allows an Endura® system to authenticate recorded video streams. This setting is available only with H.264 and

MPEG-4 compression standards.

Profile: Defines the subset of bit stream features in an H.264 stream, which includes color reproduction and additional video compres-

sion. It is important you select a profile that is compatible with your recording device(s) to ensure that your camera’s video stream can

be decoded and viewed.

• Baseline: A simple profile with a low compression ratio. A baseline profile is compatible with more recorders but uses more bits

to compress video than the other profiles. This profile supports I-frames and P-frames only. Use the baseline profile in applications

with limited scene changes; for example, an indoor scene with a single, unchanging primary light source and minimal motion.

• Main: An intermediate profile with a moderate compression ratio. This profile is compatible with most recorders and uses fewer

bits to compress video than the baseline profile, but more bits than the high profile. The main profile supports I-frames, P-frames,

and B-frames.

• High: A complex profile with a high compression ratio. This is the primary profile for high-definition television applications. The

high profile supports I-frames, P-frames, and B-frames.

Rate Control: Determines the bit rate and quality of each frame in the H.264 video stream. Each rate control setting is a compromise

between image quality and the resources required for video storage. The availability of rate control settings depend upon the model of

the camera that you are using.

• CBR: The constant bit rate (CBR) streams video at a fixed number of bits per second. CBR uses the full capacity of the bit rate setting

for scenes with or without motion. Video is always streamed at the user bit rate setting.

• VBR: The variable bit rate (VBR) reduces or increases bit rates in response to motion while maintaining high-quality video. VBR uses

variable capacity of the bit rate setting for scenes according to a user-defined target bit rate.

• CVBR: The constrained variable bit rate (CVBR) provides high-quality video and long recording time of variable bit rate while limiting

variations in recording capacity consumption.

Configuring Audio

Not all camera models are equipped with an internal audio device. If your camera does not support audio natively, you must connect an

audio device to the accessory port to capture audio. You can only enable audio through the primary video stream.

Audio is disabled by default, but you can enable and configure audio streams from the Audio Configuration page.

Audio and video might not be synchronized when viewing the primary stream through a Web browser. You might experience up to a

3-second delay in video when viewing the primary stream with audio enabled.

NOTE: Improper use of audio/visual recording equipment may subject you to civil and criminal penalties. Applicable laws regarding the

use of such capabilities vary between jurisdictions and may require, among other things, express written consent from the recorded

subjects. You are solely responsible for ensuring strict compliance with such laws and for strict adherence to any/all rights of privacy

and personalty.

1. Select Audio Configuration from the A/V Streams menu.