Axis Communications user manual Video Stream, Axis M3011 Video, Image, MPEG-4 & H.264

AXIS M3011 - Video

Video

This section describes how to configure the camera, and is intended for product Administrators, who have unrestricted access to all settings; and Operators, who have access to the settings for Basic Setup, Video and Events.

You can configure the camera by clicking Setup in the top right-hand corner of the Live View page. Click on this page to access the online help that explains the setup tools.

Video Stream

The video stream settings appear under four different tabs:

•Image

•MPEG-4 & H.264

•MJPEG

Image

Image Appearance

Use these settings to modify the image resolution and compression. Setting the compression level affects the image quality and the amount of bandwidth required; the lower the compression, the higher the image quality with higher bandwidth requirements.

See the online help files for more information.

Video Stream

To avoid bandwidth problems on the network, the frame rate allowed to each viewer can be limited. Select the Unlimited radio button option to allow the highest available frame rate; or select the Limited to radio button option and enter a value (1-30) fps in the field.

Text Overlay Settings

Use these settings to include text, date, and time as

overlay. Click for information on available options.

Preview

For a preview of the image before saving, select the Video Format and click Open.... When satisfied with the settings, click Save.

Text,

date & time overlay

MPEG-4 & H.264

GOV Settings

The GOV structure describes the composition of the H.264 video stream which consists of 2 image forms, I-images and P-images. An I-image is a complete image, whereas a P-image is only the differences in the image as compared with the previous image.

The GOV length determines how many P-images are sent before the next complete I-image is sent.

Setting the GOV-length to a higher value saves considerably on bandwidth but if there is congestion on the network, there may be noticeable decay in the video quality. Setting the GOV-length to a lower value increases the video quality, in this case.

GOV length should not be higher than the set frame rate when using a pre-trigger buffer see Pre- and post-trigger buffers, on page 24.

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