32 |
| Choosing Your Application | AXIS 2420 User’s Manual |
Picture frequency for Networking Applications
When used in a TCP/IP networking environment, the AXIS 2420 delivers up to 30/25 (NTSC/PAL) images/second. The perceived frame rate in your browser is typically limited by:
•the number of clients accessing the images
•your computer and browser
•the chosen image resolution and compression
•the lighting conditions at the point of installation
•available network bandwidth
•the complexity of detail and color variation within the image
Note: The AXIS 2420 is available in NTSC and PAL variants to accommodate the different power supply frequencies in the USA and Europe.
Image Compression Ratios
Although the file size of a
| NTSC |
|
| PAL |
|
|
|
|
|
|
|
Resolution | File size (kb) | Max fps* | Resolution | File size (kb) | Max fps* |
|
|
|
|
|
|
4CIF (704 x 480) | 7 - 150 | 10 | 4CIF (704 x 576) | 8.5 - 180 | 8 |
CIF (352 x 240) | 1.4 - 40 | 30 | CIF (352 x 288) | 1.7 - 50 | 25 |
|
|
|
|
|
|
* Maximum performance for a single viewing client.
Note: Using a modern computer will avoid introducing any unnecessary constraints on the image fre- quency.