Re: [AVT] File format for EVRC/SMV vocoder

[Mark Baugher <[e-mail]>]

Hari,

At 09:57 AM 3/7/2003 -0800, Harinath Garudadri wrote:
>At 04:46 AM 3/6/2003 -0800, Mark Baugher wrote:
>>Adam
>>   I have a question:  Why take a file format specification through the IETF?
>
>Hi Mark,
>did you mean AVT above?

No, I meant the IETF.  I asked the question because I don't think of the 
IETF as having a lot of file-format expertise so it's not the obvious place 
to develop file-format technology.

>We were not sure if draft-garudadri-qcp-00.txt should go in to AVT or as 
>an independent submission. I do not think this has been resolved yet.
>
>If you meant IETF, our motivation was if a multimedia object (message?) 
>was delivered over some mechanism other than RTP/UDP, (e.g. http, ftp, 
>etc.) the receiver should be able to render the multimedia content 
>appropriately. One example is if you create a voice attachment in Eudora 
>email client, it is stored as a qcp file described in 
>draft-garudadri-qcp-00.txt. If you send this email to someone who uses a 
>different email client, that person could play the attachment in the 
>QuickTime player, as QuickTime supports the above format.

Is it related to MP4, then?

Best Regards, Mark


>Thanks,
>hari.
>
>
>>Best regards, Mark
>>At 12:13 PM 3/5/2003 -0800, Adam Li wrote:
>>>Hi folks,
>>>
>>>One issue just recently been raised about the file format for EVRC and
>>>SMV data, which is specified the MIME registration for them. We very
>>>much would like to hear your ideas and comments on this issue.
>>>
>>>As you may have known, we are working the IETF specification on the RTP
>>>Payload Format for EVRC/SMV. It specifies how the EVRC/SMV payload is
>>>carried in RTP sessions, and it also registered the MIME format for the
>>>EVRC and SMV vocoders. The draft (draft-ietf-avt-evrc-smv) is currently
>>>at the final editing stage at the IETF FRC Editor's queue.
>>>
>>>There has been a file format defined in the draft-ietf-avt-evrc-smv at
>>>the MIME registration for EVRC/SMV. The file format specified there
>>>hasn't been changed much since the first version of the draft in 2000.
>>>
>>>There is a new Internet Draft, draft-garudadri-qcp-00.txt, specifies a
>>>different way of storage using the QCP file format, which has been used
>>>for QCEPL-13K and EVRC by some applications.
>>>
>>>Currently, it has been proposed to remove the file format specification
>>>in the draft-ietf-avt-evrc-smv, and to expand the draft-garudadri-qcp to
>>>be the only formal specification for the file format for EVRC/SMV. On
>>>the other hand, there are also suggestions to keep the file format at it
>>>is specified in the draft-ietf-avt-evrc-smv.
>>>
>>>We would like to hear your suggestions, and hear from you how you think
>>>would be the best way to proceed. Your comments are very much
>>>appreciated.
>>>
>>>Adam
>>>
>>>
>>>_______________________________________________
>>>Audio/Video Transport Working Group
>>>[e-mail]
>>>https://www1.ietf.org/mailman/listinfo/avt
>>
>>_______________________________________________
>>Audio/Video Transport Working Group
>>[e-mail]
>>https://www1.ietf.org/mailman/listinfo/avt
>
>Dr. Hari Garudadri
>phone : [phone]
>mobile : [phone]
>pager  : 858-653-0963 or [e-mail]

_______________________________________________
Audio/Video Transport Working Group
[e-mail]
https://www1.ietf.org/mailman/listinfo/avt