[Mp4-tech] MPEG-4 Variable encoding rate

[cng r]

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Dear friends,
 I am doing my B.Tech project and in that I am aiming to do the following.
 Improving the performance of multimeadia streaming over the internet by estimating the n/w parameters(such as available bandwidth,packet loss..etc). I am planning to vary encoding rate at the sender depending upon the n/w status.
 And my n/w testbed consists of 2 end hosts and 2 routers(all are Linux configured machines) with NIST Net emulator loded in both routers.
 My doubts are
 1. is is possible to develope dynamic rate encoding at the sender?
 2.for doing this, I need to develope a program which will interact
   with n/w status estimation tools and MPEG4 encoder. So for that,
   whether I need MPEG4  source code?
 3. If it is needed how can I get it?
 4. which programming language will be better suited for developing 
    interface module(such as C++, Perl,..etc).
 please help me. any suggestions regarding project idea will be greatly helpful for me.
 thanking you all in advance,
regards
cngr