[ID3 Dev] RE: Chapters & Streaming/Podcasts

[Sean Vostinar]

First off, thanks to the founders & contributors for creating this forum.

The desire to stream MP3s is what brought me to this list.  The Chapter
addition is certainly useful for, say, streaming an album.  However, I think
it falls short in live streams because an index of the entirety of the
content to come isn't practical.  Apart from adding complexity, this
approach precludes a stream that is dynamic, continuous, or one that loops.

For this purpose, it would seem more desirable for the standard to require
that any tag found during playback differentially supercede the existing tag
content, e.g. if tag #1 contains a title and subtitle, then N frames later
tag #2 contains a subtitle, the new subtitle is displayed.

It may be that this was the intent of the "update" flag in the extended
header, but I haven't seen this implemented.

Given the segmented nature of the MP3 format, the approach I describe would
lend itself to easy development of lightweight streaming applications and
would seem far easier to implement in new and existing players.

Regards,
Sean

> -----Original Message-----
> From: Andy Kim [mailto:andykim78 at gmail.com] 
> Sent: Thursday, January 05, 2006 5:56 AM
> To: Chris Newell
> Cc: id3v2 at id3.org
> Subject: Re: [ID3 Dev] Apology and introduction
> 
> 
> This is very much a chicken and an egg problem. While I love 
> the idea  
> of chapters being present in MP3 files, I don't see the 
> market leader  
> (Apple) implementing the client in iTunes nor iPod. Right now they  
> can boast to the World that chapters are only supported in iPods  
> through their M4A format and I'm sure they want to keep it that way.  
> There aren't even any tools in Windows to author those chapters.
> 
> As a podcast creation software developer, I want to support this  
> standard in my own product, but obviously there's no point because  
> there aren't any clients.
> 
> Which brings me to ask: has anybody contacted Microsoft or the  
> Creative people to see if they want to implement this in their  
> clients? If we were able to get in touch with the right people at  
> those companies, things could be shaken up a bit.
> 
> Just a thought.
> 
> - Andy Kim
> Potion Factory
> http://www.potionfactory.com
> 
> On Jan 5, 2006, at 2:42 AM, Chris Newell wrote:
> 
> > At 09:18 28/12/2005, you wrote:
> >> Is there any work going on or plans towards implementing a client 
> >> player that understand the chapters in ID3 tags?
> >
> > Andy,
> >
> > My ID3 chapter authoring tool (http://id3v2-chap-
> > tool.sourceforge.net) is not intended to function as a client but  
> > it can be used to load, check and hop around audio files which  
> > include chapter signalling.
> >
> > Best regards,
> >
> > Chris
> >
> >
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Chris Newell
> > Senior Research & Development Engineer
> > Digital Media Group, BBC Research & Development
> > Kingswood Warren, Woodland Way, Tadworth, Surrey
> > KT20 6NP  UK
> > mailto:chris.newell at rd.bbc.co.uk       http://www.bbc.co.uk/rd
> > Tel:   +44 (0)1737 839659
> > Switchboard:   +44 1737 839500
> > Fax:  +44 (0)1737 839665 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> 
> 
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