[ID3 Dev] ISRC Codes

Mark Smith mark at maseurope.net
Thu Sep 24 05:26:53 PDT 2009

Marvin - an mp3 file, as I understand it, is simply a long list of  
audio frames (http://en.wikipedia.org/wiki/MP3). There's nowhere to  
embed any info other than that specified in the frame spec, which  
doesn't include ISRC or anything like it.

Any id3 tag is extraneous to the mp3 spec itself, and so can be  
removed/edited without affecting the playability of the mp3 file - so  
I think what you're hoping for can't really be done. :(

Best wishes,

Mark Smith

On 24 Sep 2009, at 13:01, Marvin Hamlet wrote:

> Hi,
> As a publisher, I know that prior to publishing, I can populate my  
> ID3 tags with all sorts of information; but I'm also aware that any  
> end-user can simply delete or modify any of my tags if they so  
> choose. I know that using custom tags can make this a little more  
> difficult, since some tag editors are only capable of deleting  
> fields they recognise and not just ALL ID3 tags, but the potential  
> is still there.
> I'd love it if there was a way to lock a tag somehow, and if any of  
> you know of a way, I'd be glad to hear it, but that's not my main  
> question today...
> I want to add an ISRC code to a product, but I want to know if the  
> ISRC field in ID3 is simply an editible tag that can easily be  
> deleted/modified or if it can act like one of the fixed file  
> attributes like the ones I've just described?
> If you compare it to ISAN, which is a similar system used for video  
> files, all the major video formats have a placeholder for an ISAN  
> code, which is separate from the tags, meaning one can be confident  
> of it remaining as part of the file regardless of any additional  
> tag editing. I want to know if ISRC can be embedded in the same way  
> for audio files?
> I realise this may not really come under the ID3 domain, but I'm  
> hoping some of you could shed some light or point me in the right  
> direction?
> Thanks
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