Re: [AVT] profile-level-id definition

[Thomas Wiegand <wiegand at hhi.de>]

And you need all three for proper signalling of all profiles and levels:

profile_idc
constraint_setX_flags
level_idc

Best regards,
Thomas


On May 15, 2009, at 9:41 AM, David Singer wrote:

> At 10:07  +0300 15/05/09, Roni Even wrote:
> > Hi,
> > The profile and level are defined in H.264 annex A. There you can  
> > see the
> > definition for profile_idc and level_idc
> > Roni Even
>
> and the middle byte is, I believe, the byte containing the  
> constraint_set flags.
>
> > -----Original Message-----
> > From: avt-bounces at ietf.org [mailto:avt-bounces at ietf.org] On Behalf  
> > Of Steve
> > DeLaney
> > Sent: Friday, May 15, 2009 8:47 AM
> > To: avt at ietf.org
> > Subject: [AVT] profile-level-id definition
> >
> > Hello,
> >
> > we are trying to better understand the definition of profile-level- 
> > id under
> > RFC3984 section 8.1 Having browsed the archive threads including "SDP
> > Negotiation based on Profile-Level-Id", I was hoping to get some
> > clarification on this to break down the encoding for profile and  
> > level.
> >
> > we are integrating a codec which, when encoding at 1080P60, expresses
> > profile-level-id=42001E as a hardcoded value.
> > to break this down
> >
> > profile_idc 42 is MAIN profile ?
> > level_idc 1E is level 3.0 ?
> >
> > and finally, assuming profiles and levels are authoritatively  
> > defined in
> > 14496-10, what section?
> >
> > Thank you for your help.
> > /steverino2
> >
> >
> > _______________________________________________
> > Audio/Video Transport Working Group
> > avt at ietf.org
> > https://www.ietf.org/mailman/listinfo/avt
> >
> > _______________________________________________
> > Audio/Video Transport Working Group
> > avt at ietf.org
> > https://www.ietf.org/mailman/listinfo/avt
>
>
> --
> David Singer
> Multimedia Standards, Apple Inc.
> _______________________________________________
> Audio/Video Transport Working Group
> avt at ietf.org
> https://www.ietf.org/mailman/listinfo/avt

---
Visit us at

ANGACable 2009 / May 26-28 / Cologne, Germay / Hall 10.2, Booth K15
http://www.angacable.com