What is the maximum resolution and frame rate to optimize audio over the primary video stream when using a compatible Sarix based network camera?

Issue

Unable to enable audio on a Sarix IP camera, message in web interface reports "Current video configuration prevents audio playback, change settings in Video Configuration".

Product Line

Pelco Cameras

Environment

Any Sarix based network camera with audio features - any version.

Cause

The audio feature requires a certain amount of system resources be available on the camera, the video quality settings may need to be adjusted to free up the needed resources.

Resolution

The Primary Stream and Secondary Stream are video streams that include compression, resolution, image rate, and bit rate settings. The streams can be set up using a video preset setting, or they can be customized using the video configuration settings

Note** when audio is enabled the camera sacrifices over all video quality  settings.

  • A video preset is a predefined video configuration that offers a good balance between video performance and bandwidth usage. For easy stream use the Video Preset page located in the drop-down menu of the A/V Streams Tab.

 

  • To customize the Primary Stream or Secondary Stream use the Video Configuration page located in the drop-down menu of the A/V Streams Tab Configurable settings include the stream name, compression standard, resolution setting, image rate, and bit rate. The default names for the streams are Primary Stream and Secondary Stream; however, if these stream names have been changed, the new names will replace the default on the Select Stream page.

For H.264, the maximum resolution and IPS that can be set in both the primary stream and secondary stream:

  • Primary: H.264, Resolution: 800X608, Image Rate: 20 IPS Primary, 5 IPS Secondary.

For H.264, Highest Resolution and No Secondary Stream (cleared settings)

  • Primary: 1280x960

Highest Images Per Second that can be set with Highest Resolution and No Secondary Stream (cleared settings)

  • Primary: 1280x960, Image Rate: 20 IPS

 

Note:
The Spectra HD 5118 may require to lower 800x608 resolution even if the Secondary stream is cleared. When using with a Digital Sentry recorder, 1280x720 @ 15ips with a quality of 25% (configured via DS Quick Setup or DS Admin) allowed audio to be enabled. The resolution / frame and quality settings used may give different results depending on resource usage in the camera, may want to test different resolution /framerate and quality settings to fine tune.  

The Spectra HD 5220 firmware version 1.9.2.20 with the Secondary stream cleared allowed audio to be enabled at a maximum of 1920x1080 @ 15FPS. The Digital Sentry recorder, 1920x1080 @ 15ips with a quality of 100% (configured via DS Quick Setup or DS Admin).

TheSpectra HD 5230 with the Secondary stream cleared allowed audio to be enabled at maximum settings. The Digital Sentry recorder, 1920x1080 @ 30ips with a quality of 100% (configured via DS Quick Setup or DS Admin).