Re: [AVT] profile-level-id definition

[David Singer <singer at apple.com>]

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
>
>
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--
David Singer
Multimedia Standards, Apple Inc.