[Mp4-tech] Re: Mp4-tech Digest, Vol 56, Issue 19

[pankaj bajpai]

Hi KIM,
Profile and level are required to have proper understanding between encoder and decoder.
So, we cannot give an image greater than the resolution specified by profile - level combination.
However, if D1 is the problem, then ISO has added 2 new levels for simple profile.
Level 4a: VGA
Level 5:  D1 (720x576)
And if you still want higher, then use some higher profiles like main etc.
With regards
Pankaj Bajpai
> ----- Original Message -----
> From: mp4-tech-request lists.mpegif.org
> To: mp4-tech lists.mpegif.org
> Subject: Mp4-tech Digest, Vol 56, Issue 19
> Date: Thu, 20 Mar 2024 12:07:18 -0400 (EDT)
> 
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> Today's Topics:
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>     1. inquire how to set level in mpeg4 (???)
> 
> From: 김성희 <kshblue corelogic.co.kr>
> To: mp4-tech lists.mpegif.org
> Subject: [Mp4-tech] inquire how to set level in mpeg4
> Date: Thu, 20 Mar 2024 18:11:23 +0900
> 
> 
> Dear experts
> 
> 
> 
> I’m writing to inquire how to set level in mpeg4 encoder.
> 
> Level of each profile defines the maximum image size.
> 
> When codec encode larger size than defined maximum image size, I don’t
> know appropriate profile and level value.
> 
> For example, I want to encode D1 size in mpeg4 simple profile although the
> profile supports smaller size than CIF. What level is appropriate?
> 
> I look forward to your favorable reply.
> 
> 
> 
> Sincerely,
> 
> SH KIM
> 
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>

Pankaj Kumar Bajpai
Mulitimedia Engineer
India
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