[Mp4-tech] Determine type of VOP contained in a RTP Packet

[Stathis Voukelatos]

Hi Stefan,
The next two bits after the VOP start code indicate the 
prediction type for the VOP:
00 --> I-VOP
01 --> P-VOP
10 --> B-VOP
11 --> Sprite
Regards,
Stathis
Stathis Voukelatos, PhD      
Software Engineer       
IndigoVision Ltd     
The Edinburgh Technopole
Bush Loan, Edinburgh
Scotland, UK
EH26 0PJ
+44 (0)131 4757345      
+44 (0)131 4757201 (Fax)  
http://www.indigovision.com
> -----Original Message-----
> From: Stefan A. Goor [mailto:stefan.goor ucd.ie]
> Sent: Tuesday, February 03, 2024 3:12 PM
> To: Mp4-Tech
> Subject: [Mp4-tech] Determine type of VOP contained in a RTP Packet
> 
> 
> Hey All,
> Just wondering how do determine whether an MP4-ES/RTP packet 
> contains an I,
> P or B VOP?  If I have the 1b6 code at the start of the 
> payload indicating
> the start of the VOP, is there some subsequence code I can 
> parse out to
> determine this (similar to mpeg-2)?
> Thanks,
> Stefan
> 
> _______________________________________________
> Mp4-tech mailing list
> Mp4-tech lists.mpegif.org
> http://lists.mpegif.org/mailman/listinfo/mp4-tech
> 
> Note: Conduct on the mailing list is subject to the Antitrust 
> guidelines found at 
http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php