EDUCATIONAL prison IPTV system, a streaming media broadcast control technology, to achieve playback control of the plurality of player terminals by a management server, so that different content played each terminal, targeted education purposes. To achieve playback control, the need was made several "establishment of the terminal groups" - "to establish a single broadcast programs" - "Building Task spots";
Establishment of the terminal group, one or more required to play the same content ID provided to the terminal in a packet, so that these terminals can play the content at the same single broadcast program in the same time period
The establishment of a single broadcast program, the establishment of a video file or multiple video files into a single program, can let the player terminals, in order to play according to program content playbill choreographer.
Establish task spots can be an absolute time, daily, weekly, monthly and real-time setting, which allows the group to play the specified terminal programming content specified time.
During playback, the system also need to address the problem of absolute synchronization adjacent player terminal is playing the same content, because when the same content to play when the time difference, the voice sounds will interfere with each other on different terminal devices , it is affecting watch the effect. Currently we tested a variety of streaming media transmission, which can solve this problem through two protocols: UDP and RTMP, the following advantages and disadvantages of the two transport protocols to make a comparison:
To achieve the audio-visual system construction IPTV prison, you can press needs to select the output protocol streaming media. Here, as the surplus of science and technology for the new supervisor district think, has not played terminal equipment procurement, network construction can also choose UDP way, and for the construction of the network has already done renovation project supervisor district, RTMP methods can be used.
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