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From "Jin Cao" <>
Subject Re: The struct of Bluesky!
Date Tue, 23 Sep 2008 01:55:37 GMT
A small mistake: DTU means "DATA transmit unit".
Ffmpeg is a significant part of our system, however it is under GPL license.
Without ffmpeg our system can not work, so replacing ffmpeg is the only

2008/9/23, chen hecky <>:
> Dear all!
>        Bluesky is made up of two parts ------ Real Class System(RCS) and
> MERSMP(MERSMP is a massive resources of sharing and management platform).
>        The RCS. RCS is  distance education (or distance learning) system.
> It is made up of four modules  -------Teacher Client, Student Client,
> TServer(Real Class Center) and DTU(Date Transmit Unit).  I want to
> introduce
> the module of Teacher to you.
>         The Teacher Client It is the teacher's console, and provides
> real-time video, audio, text and electronic lesson plans what the teacher
> is
> teaching on the screen to students. During communicating with the student,
> it also can receive the real-time video and audio information from the
> students. Because there are audio and video communicating function in this
> module, the lib of ffmpeg is included in Teacher Client source code.
> However, FFmpeg incorporates several optional modules that are covered by
> the GUN GPL( So how to deal with
> the
> license of ffmpeg or replace ffmpeg is the first and foremost problem in
> Teacher Client source code.
> --
> Hecky @ Bluesky Dev Team XJTU

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