[Mp4-tech] MP4 File Format

[Prashant Bhujang]

Thank you very  much  Dave for your response.
Another clarification, by your explaination can I deduce that AVC can be 
used within the file format specified by chapter 13 in 14496-1(which 
uses atoms and not boxes) and may be with new config params defined in 
14496-15.
thank you very much,
regards
Prashant
Dave Singer wrote:
> At 5:41 PM +0530 10/14/04, Prashant Bhujang wrote:
>
>> Hi,
>>
>> I wanted some clarification on MP4 file format..
>>
>> Long back I had worked on mp4 file format, that was chapter 13 in 
>> 14496-1:2000. Now new standards like 14496-12(ISO media file format), 
>> 14496-14(MP4 file format) have been introduced.  I checked with the 
>> latest version of 14496-1. The chapter on file format is still retained.
>> I would like to know
>> 1. If both the forms of file formats specified in 14496-1 and 
>> 14496-14 are supported.
>
>
> yes, though the new is preferred and supersedes the old.
>
>> 2. What do brands 'mp41' and 'mp42' indicate?
>
>
> mp41 is the format documented in 14496-1 chapter 13, although that 
> format didn't have an ftyp atom.
>
>> 3. Can AVC data can be supported in the file format specified in 
>> 14496-1 (where in Atoms are used)
>
>
> yes, there is a part 15 which documents AVC in ISO family files. Since 
> in its simple mode it uses no structural changes to the file format, 
> it could be argued that it's compatible with the 14496-1 document.
>
>>
>> regards
>> Prashant
>>
>> -- 
>> Prashant Bhujang
>> Sasken Communication Technologies Ltd,
>> 139/25, Amar Jyothi Layout, Domlur PO
>> Bangalore 560071
>> Tel: 25355501 Extn: 1124
>> email: prashant sasken.com
>>
>>
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-- 
Prashant Bhujang
Sasken Communication Technologies Ltd,
139/25, Amar Jyothi Layout, Domlur PO
Bangalore 560071
Tel: 25355501 Extn: 1124
email: prashant sasken.com
                           SASKEN BUSINESS DISCLAIMER
This message may contain confidential, proprietary or legally Privileged information. In case you are not the original intended Recipient of the message, you must not, directly or indirectly, use, Disclose, distribute, print, or copy any part of this message and you are requested to delete it and inform the sender. Any views expressed in this message are those of the individual sender unless otherwise stated. Nothing contained in this message shall be construed as an offer or acceptance of any offer by Sasken Communication Technologies Limited ("Sasken") unless sent with that express intent and with due authority of Sasken. Sasken has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email