[Mp4-tech] request: mpeg 4 audio , video profiles and levels

[Rob Koenen (MPEGIF)]

Thanks Herbert.
Also see http://www.m4if.org/tutorials.php
under "Information on MPEG-4 Object Types, Profiles and Levels"
Rob
> -----Original Message-----
> From: Herbert Thoma [mailto:tma iis.fhg.de] 
> Sent: Monday, 29 December 2023 20:35
> To: ravi kumar
> Cc: mp4-tech lists.mpegif.org
> Subject: Re: [Mp4-tech] request: mpeg 4 audio , video 
> profiles and levels
> 
> 
> ravi kumar schrieb:
> > 
> > hi all,
> > 
> >   I request you to please clarify the following
> > 
> > 1. How many profiles and levels are there in MPEG4 ASP
> 
> There is one Profile ASP = Advanced Simple Profile and there are 6
> levels: 1, 2, 3, 3b, 4, 5
> 
> > 2. Where I could find profile and levels for all MPEG? 1, 2,4,7?
> >     (including frame rates)
> 
> In the respective standard document.
> 
> > 3.  Which is best profile and level for most of the common 
> usage( say  
> > < 1MBps) applications
> 
> Depends on your application. For 1 Mbps and ASP probably level 3b.
> 
> > 4. In real time ( say video conference applications)  how one can 
> > merge  audio and video profile  OR talk about profile and levels( 
> > since audio and video profile and levels are different)?
> 
> You have a profile for video and a profile for audio. Where 
> is the problem?
> 
> > 5.  Show me the  web link so that I can clarify few more doubts.
> 
> http://www.mpegif.org
> http://www.chiariglione.org/mpeg/
> 
> > 
> > Regards
> > Ravi
> > 
> > 
> > Yahoo! India Mobile: Ringtones, Wallpapers, Picture 
> Messages and more. 
> > Download now.
> > 
> >                                                   
> > 
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> 
> -- 
> Herbert Thoma
> FhG-IIS A, Studio Department
> Am Wolfsmantel 33, 91058 Erlangen, Germany
> Phone: +49-9131-776-323
> Fax:   +49-9131-776-399
> email: tma iis.fhg.de
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