Selecting the Audio Configuration Settings

Chapter 2 Operation

A/V Streams Tab

Table 2-6	Supported Stream Combinations when using MJPEG Compression on Primary Stream (PAL) (continued)

		Secondary Stream: H.264			Secondary Stream: MJPEG

Primary Stream using			Frame Rate			Frame Rate
H.264 Encoding		Resolution	(FPS)	Bit Rate (kbps)	Resolution	(FPS)	Bit Rate (kbps)

CIF		CIF	2.5	256	CIF	2.5	256
2.5 FPS @ 256 kbps

CIF		CIF	1	128	CIF	1	128
1 FPS @ 128 kbps

I-Frame Interval

The I-frame interval configures the number of partial frames that occur between full frames in the video stream. For example, in a scene where a door opens and a person walks through, only the movements of the door and the person are stored by the video encoder. The stationary background that occurs in the previous partial frames is not encoded, because no changes occurred in that part of the scene. The stationary background is only encoded in the full frames. Partial frames improve video compression rates by reducing the size of the video. As the I-frame interval increases, the number of partial frames increases between full frames. Higher values are only recommended on networks with high reliability. This setting is only available with H.264 and MPEG-4 compression standards.

Quality of Service for Differentiated Services Code Point

Quality of Service (QoS) for Differentiated Services Code Point (DSCP) is a code that allows the network to prioritize the transmission of different types of data. This setting is only available with H.264 and MPEG-4 compression standards.

Note	•	If you are not familiar with DSCP, contact your network administrator before changing this setting.
	•	Your network must be configured to use QoS. If you are unsure if your network is QoS-aware,
		contact your network administrator.

Advanced Sharpening

The Advanced Sharpening setting enhances picture detail by sharpening the edges in the picture. When this mode is enabled, there is a trade-off between image quality and the resources required for processing power. The maximum camera resolution and image rate will not be available, but the edges of the image seem sharper. Only use this setting if you cannot achieve the sharpness level you want by adjusting the digital processing settings of the camera. The default setting for Advanced Sharpening is Off.