[AVT] RE: Question from IANA abut registry for WAV and AVI codecs


Cullen,
Searching I found that DVM is also Dolby AC3, probably different format

FAST Multimedia AG DVM (Dolby AC3)
http://www.codeclibrary.com/details.php?code=0x2000

Roni
> -----Original Message-----
> From: Cullen Jennings [mailto:fluffy@cisco.com]
> Sent: Wednesday, October 10, 2007 8:13 PM
> To: avt@ietf.org
> Cc: avt-chairs@tools.ietf.org
> Subject: Question from IANA abut registry for WAV and AVI codecs
> 
> 
> I have tried to reach the authors of these registrations but failed
> to resolve the issue. Does anyone know if we have the wrong values in
> the registry and is so can you please suggest what values should be
> in the registry.
> 
> Thanks, Cullen <with my AD hat on>
> 
> 
> Begin forwarded message:
> 
> >>>
> >>>
> >>> On Mon Aug 13 18:16:20 2007, shawn@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-
> >>>>
> >>>>
> >>>
> >>
> >

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