Re: IP -> PES -> MPEG TS?

[TAKEI jun <takei@csm.jcsat.co.jp>]

From: Ghassane Aniba <Ghassane.Aniba@sophia.inria.fr>
Subject: Re: IP -> PES -> MPEG TS?
Date: Fri, 22 Mar 2002 18:50:42 +0100
Message-ID: <>

Ghassane.Aniba> HI,
Ghassane.Aniba> 
Ghassane.Aniba> Patrick Cipiere wrote:
Ghassane.Aniba> > 
Ghassane.Aniba> > IP packet in MPE datagram section in MPEG2 Transport packets
Ghassane.Aniba> > 
Ghassane.Aniba> > Patrick.


Ghassane.Aniba>  i ask if we can put directly ip in MPEG2 TP.  As i
Ghassane.Aniba>  know, we use MPE to have the destination adress, and
Ghassane.Aniba>  so we could
Ghassane.Aniba> filter IP paquets in Layer 2. But, if we have a
Ghassane.Aniba> mapping between MAC Adress and PID in the receiver, so
Ghassane.Aniba> we don't need to transmet the MAC, because we already
Ghassane.Aniba> transmit PID.  Could someone give me his opinion,
Ghassane.Aniba> thanks.

I can't understand why you want to map IP address or MAC address into
PID.

PID = 13 bit
MAC = 48 bit(ethernet)
IP  = 32 bit or 128 bit

PID has been designed as a PROGRAM IDENTIFIER in broadcasting
world. MAC and IP address represent identification of the
communication node. If you map MAC address and PID, PID will be a MAC
address. That means PID is not Program ID but Receiver ID and the
number of receiver would be less than 8191. Do you think it is
scalable?
--
JSAT
Jun Takei