AXIS P39 Network Camera Series
Learn more
Overlays
Overlays are superimposed over the video stream. They are used to provide extra information during recordings, such as a timestamp,
or during product installation and configuration. You can add either text or an image.
The video streaming indicator is another type of overlay. It shows you that the live view video stream is live.
Pan, tilt, and zoom (PTZ)
Guard tours
A guard tour displays the video stream from different preset positions either in a predetermined or random order, and for configurable
periods of time. Once started, a guard tour continues to run until stopped, even when there are no clients (web browsers) viewing the
images.
Note
The pause between successive guard tours is at least 10 minutes, and the fixed minimum viewing time is 10 seconds.
Streaming and storage
Video compression formats
Decide which compression method to use based on your viewing requirements, and on the properties of your network. The
available options are:
Motion JPEG
Note
To ensure support for the Opus audio codec, the Motion JPEG stream is always sent over RTP.
Motion JPEG, or MJPEG, is a digital video sequence that is made up of a series of individual JPEG images. These images are then
displayed and updated at a rate sufficient to create a stream that shows constantly updated motion. For the viewer to perceive motion
video the rate must be at least 16 image frames per second. Full motion video is perceived at 30 (NTSC) or 25 (PAL) frames per second.
The Motion JPEG stream uses considerable amounts of bandwidth, but provides excellent image quality and access to every image
contained in the stream.
H.264 or MPEG-4 Part 10/AVC
Note
H.264 is a licensed technology. The Axis product includes one H.264 viewing client license. To install additional unlicensed
copies of the client is prohibited. To purchase additional licenses, contact your Axis reseller.
H.264 can, without compromising image quality, reduce the size of a digital video file by more than 80% compared to the Motion
JPEG format and by as much as 50% compared to the MPEG-4 standard. This means that less network bandwidth and storage space
are required for a video file. Or seen another way, higher video quality can be achieved for a given bitrate.
H.265 or MPEG-H Part 2/HEVC
Note
H.265 is licensed technology. The Axis product includes one H.265 viewing client license. To install additional unlicensed
copies of the client is prohibited. To purchase additional licenses, contact your Axis reseller.
How do Image, Stream, and Stream profile settings relate to each other?
The
Image
tab contains camera settings that affect all video streams from the product. If you change something in this tab, it
immediately affects all video streams and recordings.
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