Can some one explain me...

[Miciolele]

Please, can someone explain me (or give me a link where i can read something about) the purpose of transcoding a video when i stream it in output? What is the difference among the various encapsulation methods?
Which one is better to use? I couldn't find anything usefull in the documentation.
Thank you
Gabe

[Miciolele]

ok, i understand that here everybody use it, but nobody knows what is doing