Video codec for H.323 Annex I

Adam Li adamli at
Thu Feb 22 05:54:58 EST 2001

Hi, Simao,

Thank you very much for your email. That would be a great idea. Enclosed is
the document that discribed the detailed simulation scenario condition. Time
seems to be quite tight for the document deadline of this meeting now.

I think most of the issues in the testing condition documents are settled
now. We have both agreed on use H.263 profile 3 and 4, generating bitstream
with packets fits the MTU, and ploting the rate distortion curve. If there
is any details in this document that Mr. Baese would like to discuss, he is
very welcome to bring it up.

See you in Tasmania.


Adam H. Li
Image Communication Lab                    (310) 825-5178 (Lab)
University of California, Los Angeles      (310) 825-7928 (Fax)

> -----Original Message-----
> From: Simao Campos-Neto [mailto:simao.campos at]
> Sent: Wednesday, February 21, 2001 2:20 AM
> To: Adam Li
> Cc: ITU-SG16 at mailbag.cps.INTEL.COM
> Subject: Re: Video codec for H.323 Annex I
> Just a thought:
> would it be possible to use a common implementation of H.263+,
> e.g. by a third-party company that could volunteer to provide
> encoded streams for parties implementing the H.323-I simulations
> and decoding transmission-disturbed bitstreams provided back to
> it? This would circumvent the unavailability of a common,
> publicly available H.263 implementation and provide that the same
> H.263 implementation is used by all parties.
> Another option would be that one company provides e.g. an
> executable version of H.263 (under a specific NDA for this
> particular purpose) to the parties simulating H.323-I. This would
> accomplish the same purpose.
> All in support of a good spirit of cooperation!
> Best regards,
> Simao
> --
> ==================================================================
> =========
> Simao Ferraz de Campos Neto, Scientist *All comments are strictly my own*
> LMGT/COMSAT Laboratories               Tel:    +1-301-428-4516
> 22300 Comsat Drive                     Fax:    +1-301-428-9287
> Clarksburg MD 20871 - USA              E-mail:
> simao.campos at
> ==================================================================
> =========
>   ******** Practice random kindness and senseless acts of beauty ********
> ==================================================================
> =========
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