How to play  with part of the video.??

I mean that how can I separate the video to several parts,(maybe 2 frames to one part). and then How to play one part of them with JMF.
I want to use this to implement the p2p system. If I can solove there two issues, I think I can use some routing arithmetic to transfer some parts to peers. The peer with one thread just play the current frame, and create another one to download the following parts.
could you guys suggest me ??

Yeah, I do p2p with jmf.
In p2p system, the souce of video send the parts to the network(earch part has a UID,such as 1,2,3,4,5...), and the other computers receive some of them.(the parts must can play continuously) .And in the memery of each computer have a buffer to download the following parts from the network, not from the source.
In this way, some peers of the network can communicate.For example,
Peer A have the 1st ,3rd,5th parts,and Peer B have the 2nd,4th parts.
When A paly the 1st part, at the same A download from B the 2nd part, Then A can play in turn. In the same way B can download the 3rd part from A.
Maybe my way is not right, do you have another way to implement the p2p, or the materail about it.
Waiting for your replay....

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