[streaming] Re: details of MPEG headers in RTP and payload size

[Christophe Massiot]

À (At) 17:43 +0200 8/06/04, Guillaume Membré écrivait (wrote) :
>Hello everyone,
>
>I'm trying to understand the MPEG header that follows the RTP header 
>of each RTP frame but I do not know there signification. I know that 
>it is MPEG2-TS specification but the only documentation I have found 
>is 
>http://www.cs.columbia.edu/~hgs/rtp/drafts/draft-hoffman-rtp-mpeg-encap-01.txt 
>. I tried to compare the header of this draft and those outputed by 
>vlc but there are not the same.
>I think I am on the wrong way. Could you please tell me what are the 
>signification of the 4 byte MPEG header please. Or could you please 
>show me a doc which explained this.

www.wotsit.org

>Moreover, I do not understand why the payload size of a RTP frame is 
>1316 bytes. In documentations I found, it is always said that this 
>payload should be 188 bytes long included the MPEG header.
>I noticed that 1316 = 7 * 188, so why do you choose to put 7 MPEG 
>frames together ?

1500 bytes is the size of an Ethernet frame.

-- 
Christophe Massiot.

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