Hi,

It should be noted that the code doesn't actually use the "orchard" algorithm. So I'll refer to it as "Tribler Streaming".

1) The SVN of Tribler Streaming is http://svn.tribler.org/orchard/branches/withplayer/

2) To interact with the video source (camera) and sink (player),two interfaces are used, as described in inputstream.py and outputstream.py. The right classes are instantiated in player.py, and are given as a parameter to the Orchard p2p algorithm (still the old name, sorry).

Several example classes are included. One uses ffmpeg, another logs to disk. Note how the classes (try to) provide PTS information to signal to the p2p algorithm about the playback position. This allows the p2p algorithm to judge which packets should not be requested anymore.

Three streams will be used, with packet #i belonging to stream i % 3. Stream 0 is audio, 1 is odd frames, 2 is even frames. Of course, if no MDC is used, you can just combine all streams and not care about their meaning.

Finally, Tribler Streaming inspects the packets produced by the video server in packetformat.py, to determine when a packet will be due for playback, which packets are I-frames, which are audio, etc. These functions should be rewritten if a different codec is used.