-----------        -----------------
| Live555 |------->| Decoder Audio |
-----------    |   -----------------
    |          |
    |          |   -----------------
    |	         |-->| Decoder Video |
    |		          -----------------
    |                    ^
----------------         |
| Stream_Demux |         |
----------------         |
    |                   ???
    | key(K) and         | send K
    | duration (D)       |
    |                    |
----------------         |
| "decryption" |---------|
----------------