Bosch Appliances X10 SN Target data rate, Encoding interval, Video resolution, 2CIF, 4CIF/D1

48 en Configuration Using a Web Browser VideoJet X10 SN

Target data rate

You can limit the data rate for the VideoJet X10 SN to optimize utilization of the bandwidth in your network. The target data rate should be set according to the desired picture quality for typical scenes with no excessive motion.

For complex images or frequent changes of image content due to frequent movements, this limit can be temporarily exceeded up to the value you enter in the Maximum data rate field.

Encoding interval

The figure selected here determines the interval at which images are encoded and transmitted. For example, entering 4 means that only every fourth image is encoded, the following three are skipped - this can be particularly advantageous with low bandwidths. The image rate in ips (images per second) is displayed next to the text field.

Video resolution

Here you can select the desired resolution for the video image. The following resolutions are available:

–QCIF

176 × 144/120 pixels

–CIF

352 × 288/240 pixels

–1/2 D1

352 × 576/480 pixels

–2CIF

704 × 288/240 pixels

–4CIF/D1

704 × 576/480 pixels

–2/3 D1

464 × 576/480 pixels

Default

Click Default to return the profile to the factory default values.

Details

Clicking the Details >> button displays further details on image quality and data transmission. These settings require extensive knowledge of the MPEG standard and video data compression. Incorrect settings can render the video images unusable.

Maximum data rate

This maximum data rate is not exceeded under any circumstances. Depending on the video quality settings for the I- and P-frames, this fact can result in individual images being skipped. The value entered here must be at least 10% higher than the value entered in the Target data rate field. If the value entered here is too low, it will automatically be adjusted.

I-frame distance

This parameter allows you to set the intervals in which the I-frames will be coded. 0 means auto mode, whereby the video server inserts I-frames as necessary. An entry of 1 indicates that I-frames are continuously generated. An entry of 2 indicates that only every second image is an I-frame, and 3 only every third image etc.; the frames in between are coded as P-frames.

DOC V4.0 2009.06 Installation and Operating Manual Bosch Security Systems