[Mp4-tech] Mp4/M4a/WMA header format

[tech list]

You would need a parser for MP4 file format. Open source code is available,
you can give  a google search and come up with something. Parsing will tell
you if the file contians video or auido or both. For the meta data like
artist, album ,etc. I am not sure if there is a standard for it like ID3.
Are you trying to embed this info into the MP4 files, or trying to extract
them from existing files?
On 7/24/06, Magda Barros <magda.barros gmail.com> wrote:
>
>
>   Hi,
>
>  With Mp3 files, through parser in ID3v1, ID3v2... I get informations:
> title,artist,album,comment,year,genre ...
> 1. In the case of MP4 and M4a files, as I can to get these information?
> 2. How to make parser in these two kind of files(header)?
> 3. Somebody has some document with the specification of the format of
> these formats?
> 4. I want to consider Mp4 archives that contain only information of audio.
> How to know that if the MP4 contains video, audio?
>     So, could me one of you help me?
>
>   Thanks,
>    Magda.*
>  *
> **
>
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