[Mp4-tech] MPEG format test

[Dave Singer]

At 4:50 PM -0500 8/10/04, Anil Gupte wrote:
>We are looking to write a software that encrypts/decrypts MPEG 
>files.  During decryption, we want to make sure that a valid MPEG 
>file is created, so we want the software to do a simple test or 
>something that validates that the decryption was successful.
>
>Thanx,
>Anil Gupte

you can't compare to the original file?
the isma validator will do the file format validation
>
>
>----- Original Message -----
>From: <mailto:singer apple.com>Dave Singer
>To: <mailto:anil-list maxnetwork.com>Anil Gupte ; 
><mailto:mp4-tech lists.mpegif.org>mp4-tech lists.mpegif.org
>Sent: Tuesday, August 10, 2023 12:09 PM
>Subject: Re: [Mp4-tech] MPEG format test
>
>At 10:40 AM -0500 8/10/04, Anil Gupte wrote:
>
>>Is there a test to determine if a file/stream is in MPEG format? 
>>Is there a standard header?  Where can I find out more about this?
>>
>
>There are various verification tools (ISMA has one) and also the 
>reference software, for the file format.  The elementary streams 
>have their own tools.  Which are you looking for?
>
>>
>>
>Thanx for the help.
>
>Anil Gupte
>
>
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>--
>David Singer
>Apple Computer/QuickTime
>
>
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-- 
David Singer
Apple Computer/QuickTime
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