Download Axis P1346-E
Transcript
AXIS P1346/-E/AXIS P1347 - Video & Audio Overlay Settings To place an overlay image at specific coordinates in the view area, check Include overlay image at coordinates and enter the X and Y coordinates. The overlay image must first be uploaded to the network camera, see Overlay Image, on page 20. Text, date & time overlay Text, date and time can also be used as an overlay. Click for information on available options. Audio Select the Enable Audio box option to enable audio in the video stream. Audio configuration settings are the same for all video streams and configured under Video & Audio > Audio Settings; see page 22. The current audio configuration is displayed under Current Audio Settings. Note: The box option Enable Audio Support under System Options > Security > Audio Support must also be selected to enable sound in the product. See Audio Support, on page 36. H.264 GOV Settings The GOV structure describes the composition of the video stream and setting the GOV-length to a higher value saves considerably on bandwidth but may have an adverse effect on image quality. Bit Rate Control The bit rate can be set as Variable Bit Rate (VBR) or Constant Bit Rate (CBR). VBR adjusts the bit rate according to the image complexity, using up bandwidth for increased activity in the image, and less for lower activity in the monitored area. CBR allows you to set a fixed Target bit rate that consumes a predictable amount of bandwidth. As the bit rate would usually need to increase for increased image activity, but in this case cannot, the frame rate and image quality are affected negatively. To partly compensate for this, it is possible to prioritize either frame rate or image quality. Not setting a priority means the frame rate and image quality are equally affected. Note: To determine a reasonable bit rate, go to Setup > Video & Audio > Video Stream > Image. Under Overlay Settings, check the Include text checkbox and enter the code #b in the field. The current bit rate will display as a text overlay on the Live View page. To preview the image stream while configuring the GOV settings and Bit rate control, select Open... under Preview. MJPEG Sometimes the image size is large due to low light or complex scenery. Adjusting the Maximum frame size helps to control the bandwidth and storage used by the Motion JPEG video stream in these situations. Defining the frame size as Unlimited provides consistently good image quality at the expense of increased bandwidth and storage usage during low light. Limiting the frame size optimizes bandwidth and storage usage, but may give poor image quality. To prevent increased bandwidth and storage usage, the maximum frame size should be set to an optimal value. 17