[Mp4-tech] AVC over IP

[Ye-Kui.Wang nokia.com]

Hi Philippe,
See inline.
BR, YK 
>-----Original Message-----
>From: mp4-tech-bounces lists.mpegif.org 
>[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of ext 
>Philippe De Neve
>Sent: 08 August, 2005 19:30
>To: Mp4-tech lists.mpegif.org
>Subject: [Mp4-tech] AVC over IP
>
>Hi all,
>
>is there a way to determine which frame type is contained in a 
>ip packet?

No according to RFC 3984.
>My experiment is to resend I-frame packets. I've been able to 
>do this with
>MPEG-2 (by reading the RTP headers) but it is not immediately 
>clear for me how I can realize this for AVC.
>
>Am I correct that one or more NAL units are contained in one packet?

Yes.
>Does the RTP header  (extension for AVC) define which frame 
>type is in the RTP packet?
>

No. The one-byte AVC header extension contains three fields, F, NRI and
Type, wherein there is nothing telling about frame, picture or slice
type.
>regards, Philippe.
>
>
>
>*********************************************************
>  ir. De Neve Philippe
>  Ghent University
>  Department of Information Technology (INTEC)
>
>  Complex Zuiderpoort - Blok C0
>  Gaston Crommenlaan 8
>  B-9050 Ledeberg
>
>  tel. :       +32 9 331 49 75
>  e-mail :  philippe.deneve intec.UGent.be
>*********************************************************
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