Subject: Re: [AVT] a question about PacketSeq# mapping in MPEG-4 over IP format draft

From: [email-masked]
Date: Tue, 19 Mar 2002 18:07:59 +0100

Yes, 

AU sequence number remain untouched in the SL opaque part of the headers

mapping SLpacket sequence number is on Index/IndexDelta
(not mapping to RTP seq num is because such a mapping
cannot be systematic, indeed in the multiple packing style
you have several SL packet per RTP packet)

if the text of the draft is unclear about that please spot the text
you would like to see changed.

regards, 

Philippe Gentric
Software Architect
Philips MP4Net
[email-masked]
http://www.mpeg-4.philips.com

Dorairaj Vembu <[email-masked]>
Sent by: [email-masked]
03/16/2002 09:19 AM

        To:     HAINING LIU <[email-masked]>
        cc:     [email-masked]
[email-masked]
(bcc: Philippe Gentric/LIM/CE/PHILIPS)
        Subject:        Re: [AVT] a question about PacketSeq# mapping in MPEG-4 over IP format 
draft
        Classification: 

I think Index is used for mapping SL PacketSequenceNumber . AU sequence
Number  goes  inside the RSLH  section .

Thank you
Dorai

HAINING LIU wrote:

> Can anyone point out what is the exact mapping scheme of SL PacketSeq# 
in
> "RTP Payload format for MPEG-4 streams"?
>
> According to  the draft, the Seq# in RTP header has a random offset, 
which
> complies with RTP standard. Then in the Payload header, my understanding
> is that Index is used for AU seq # mapping. So how to map a SL 
PacketSeq#?
> Implicitly to RTP seq #?
>
> Thanks,
> Haining
>
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