[AVT] Help with DVM and AV3 entries in wave-avi registry

[Cullen Jennings <fluffy at cisco.com>]

Hi All,

Shawn pointed out there could be a problem here. Can anyone provide  
definitive references for these or pointers on how to solve it?

Thanks, Cullen

The registry is at http://www.iana.org/assignments/wave-avi-codec- 
registry

Begin forwarded message:

> From: "Michelle Cotton via RT" <iana-matrix at icann.org>
> Date: August 28, 2007 10:38:41 AM PDT
> Cc: jon.peterson at neustar.biz, fluffy at cisco.com
> Subject: [IANA #97962] Codec registry inaccuracies
> Reply-To: iana-matrix at icann.org
>
> Jon and Cullen,
>
> Thomas Narten suggested maybe this is a RAI area item, so I'm  
> checking with you both to see if you can
> assist.
>
> We received the below inquiry about 2 registrations being incorrect  
> in the following registry:
> http://www.iana.org/wave-avi-codec-registry
>
> Specifically:  Dolby AC3 SPDIF  0x0092
>                     DVM                    0x2000
>
> See specifics below in his message.
>
> I don't believe we have made any updates to this registry since  
> I've been here accept for format edits
> (not content).
>
> Any ideas on how this should be corrected?
> These are all documented in RFC 2361.
> http://www.rfc-editor.org/rfc/rfc2361.txt
>
> Any input you have would be great, even if it is pointing us to  
> someone else :)
>
> Thanks,
>
> Michelle
> IANA
>
>
> On Mon Aug 13 18:16:20 2007, shawn at vrfarchive.com wrote:
> > > Can you provide the URL for which registry you are referring to?
> >
> > Sure thing:
> >
> > http://www.iana.org/assignments/wave-avi-codec-registry
> >
> > It seems that AC3 and DVM are mixed up. Or at least, I know a Format
> >    Tag of 0x2000 means AC3 for sure.
> >
> > I found this because of an AVI that wouldn't play sound. It's tag was
> >    0x2000 and I looked it up in the registry (which identifies it as
> >    DVM). I searched for the namespace type (audio/ 
> > vnd.wave;codec=2000)
> >    and found this:
> >
> > http://forum.doom9.org/archive/index.php/t-34712.html
> >
> > [quote]
> > For instance, Tag2000 is AC3, yet in the RFC, AC3 is listed as Tag92.
> >    It is the only listing for AC3 in the RFC :
> > [snip]
> > Furthermore, tag2000 is in the list, but is listed as DVM. What in  
> > the
> >    world is DVM?
> > [/quote]
> >
> > I'd like to provide an automatic codec download service, and I  
> > planned
> >    on using RFC 2361 as a reference. I can easily swap these two, but
> >    I'm wondering if there are other entries that need fixing.
> > -SHAWN-

_______________________________________________
Audio/Video Transport Working Group
avt at ietf.org
https://www1.ietf.org/mailman/listinfo/avt