dallmeier DF4900HD, Руководство по установке и настройке

Страница: 54 / 62

DF4900HD / DF4500HD
www.dallmeier.com 54
13 Image Transmission
The device can be configured as active network component for streaming of audio and
video data (see section “ Video Streaming ” on page 37).
In addition the device, as a passive network component, can be triggered for transmission
of audio and video data via various transport and data protocols by external devices and
applications.
13.1 Web Browser
Current video data can be retrieved as a single image (JPEG) by any web browser.
Transmission protocol HTTP
Transport protocol TCP
Port 80
Note that
• the used Encoder must be set to MJPeG .
• the used Encoder must be activated.
• the
JPeG live access right must be activated.
Use the following retrieve expression for the various encoders:
encoder 1 http://IP address of the device/live/image0.jpg
encoder 2 http://IP address of the device/live/image1.jpg
The displayed image can be refreshed at any time. The retrieve expression can be inte-
grated in a HTML (JavaScript) page that refreshes the image automatically.
13.2 RTSP Application
The live video can be retrieved and controlled (start and stop) by external RTSP capa-
ble applications. This function does not affect the “Video Streaming“ function (see section
“ Video Streaming ” on page 37).
Communication protocol RTSP
Transmission protocol RTP
Transport protocol UDP
Port
554
Note that
• UDP provides data transmission with a relatively low delay.
• packet loss (lack of images) may occur during transmission.
• the used Encoder must be activated.
• the RTSP live access right must be activated.