User`s manual

23
AXIS Media Control - MPEG-4 Tab
MPEG-4 Tab
This tab sets the advanced properties for MPEG-4 video processing and default video decoder. Changes to the video processing
properties will not take effect on media streams being displayed until the stream is restarted.
Video Processing
For MPEG-4, a new video renderer has been added with the introduction of DirectX 9. If problems are encountered when
rendering the video stream, select the Use Advanced Video Rendering check box.
All client side overlays, such as the crosshair in
Emulated Joystick Mode, can be disabled with the Enable Overlays checkbox.
This will override the Enable PTZ Overlays setting in the PTZ tab. See PTZ Tab, on page 25. This setting will take effect after a
restart of the video stream with the Stop/Start butt
on, or a refresh of the browser.
By default, AXIS Media Control decodes as many MPEG-4 video frames as possible given the capabilities and performance of
the computer. To decrease the amount of CPU capacity used for video processing, it is possible to only decode key frames. This
will, however, greatly reduce the quality of the video being displayed. For an explanation of different types of MPEG frames,
please refer to the MPEG standards.
Playout buffer
When running only video - This setting specifies the amount of time that the video stream is delayed in live view. A higher
value may prevent image problems due to slow/unstable network connection.
When running Audio and Video - If both audio and video are used, this setting specifies the amount of time that both the
audio and
video streams are delayed in live view. A higher value may prevent image problems due to slow/unstable network
connection.
Default Video Decoder
The MPEG-4 video decoder can be used to view standard MPEG-4 streams and files produced by other sources. This decoder
may, however, conflict with other MPEG-4 applications already installed in the target computer, e.g., XVID, DIVX6 players. Use
the buttons on this tab to attempt to resolve conflicts, or to set this decoder as the default for viewing MPEG-4 video content.