Re: [Fecframe] [AVT] New work at the SMPTE on television contribution mediastreams over IP networks using RTP

["Ali C. Begen (abegen)" <abegen at cisco.com>]

I agree. So far, we tried to do this w/o an official liaison between fecframe/avt and smpte. If it will make things more efficient, I support having a liaison. Looking at where we are now in terms of resolving conflicts, I don't think we can do any worse.

Copying fecframe.

-acbegen	

> -----Original Message-----
> From: avt-bounces at ietf.org [mailto:avt-bounces at ietf.org] On Behalf Of Colin Perkins
> Sent: Tuesday, August 18, 2009 5:53 PM
> To: Tom Taylor
> Cc: IETF AVT WG
> Subject: Re: [AVT] New work at the SMPTE on television contribution mediastreams over IP
> networks using RTP
> 
> Tom,
> 
> Given the known conflicts between RFC 2733 and RFC 3550, and their
> impact on earlier versions of SMPTE 2022-1, it would clearly be
> desirable for AVT and/or FECFRAME to establish a liaison with SMPTE on
> this subject, to give guidance on how to evolve their standards to
> avoid the problems with 2733 in future (preferably driven by someone
> working on the FEC drafts).
> 
> Colin
> 
> 
> 
> On 14 Aug 2009, at 03:34, Tom Taylor wrote:
> > We have received the following letter from the SMPTE, addressed to
> > the chairs of AVT and FECFRAME. Shall we establish a liaison with
> > them, and on which specific points?
> >
> > Dear Colleagues:
> >
> > The Society of Motion Picture and Television Engineers would like to
> > inform you that a new project has been undertaken that may be of
> > interest to your membership and organization. Under the chairmanship
> > of Brad Gilmer, brad at gilmer.tv, the project will add more parts to
> > SMPTE Standard 2022, which carries television contribution media
> > streams over IP networks using RTP.
> > The new work will involve the packetization of Variable Bit Rate
> > MPEG-2 Video Transport Streams, SDI, and possibly other related
> > mappings. Current publications in this series of Standards are:
> >
> > http://store.smpte.org/product-p/smpte 2022-1-2007.htm SMPTE
> > 2022-1-2007, "Forward Error Correction for Real-Time Video/Audio
> > Transport over IP Networks"
> >
> > http://store.smpte.org/product-p/smpte 2022-2-2007.htm SMPTE
> > 2022-2-2007, "Unidirectional Transport of Constant Bit Rate MPEG-2
> > Transport Streams on IP Networks"
> >
> > Some of the new mappings may be ready for balloting following the
> > 32NF Technology Committee meeting on 18 September in Gilze, The
> > Netherlands. Individuals are encouraged to participate directly in
> > this standards work by joining this Ad Hoc Group in SMPTE – please
> > contact me for information on direct participation.  If your
> > organization wishes to establish a liaison on this topic, please let
> > me know by 9 September, by sending a response to liaisons at lists.smpte.org
> > .  Under such a liaison, we may query your organization on specific
> > points, we will accept any contributions your organization may wish
> > to provide, and we will keep you informed as the work progresses.
> >
> > Best regards,
> >
> > (Signed) Wendy Aylsworth
> >  SMPTE Engineering Vice President
> >  +1-818-977-7574
> > wendy.aylsworth at warnerbros.com
> 
> 
> --
> Colin Perkins
> http://csperkins.org/
> 
> 
> 
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