[Mp4-tech] [H.264][ControlRate] Anybody knows where to find TMN 5?

Tourapis, Alexis Alexis.Tourapis dolby.net
Thu Feb 16 13:45:26 EST 2006


Dear Alejandro,
Actually TMN means test model near-term and it is used to refer to the
H.263 reference coder. TM was used for MPEG-2, while you also have
similarly VM for MPEG-4 and JM for the H.264/AVC codec. TMN5 corresponds
to the RC that was available in that software.
Unfortunately I am not sure myself where you can find the original
document if you are looking for that one in particular. More
specifically the best reference for it is :
ITU-T, sl Video Codec Test Model, TMN5, ITU-TSS LBC-95, Study Group 15,
Working Party 15/1, Expert's Group on Very Low Bitrate Visual Telephony,
Telenor Research, January,
http://web.fou.telenor.no/fou/DVC/tmn5/tmn5.html, 1995
Fortunately however you can find the full description for the TMN5 RC in
TMN8 (see section 8 - Alternate Rate Control Method)
http://ftp3.itu.ch/av-arch/video-site/9706_Por/q15a59.doc
Even more useful, you can actually find the original code here (see
UpdateQuantizer() if I am not mistaken)
http://cvs.wirlab.net/cgi-bin/viewcvs.cgi/kphone-vic/vic/codec/tmn/ratec
trl.c?rev=1.1.1.1&view=markup
Best regards,
Alexis
________________________________
From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Alejandro Moya
Sent: Thursday, February 16, 2024 2:26 AM
To: Gary Sullivan
Cc: mp4-tech lists.mpegif.org
Subject: Re: [Mp4-tech] [H.264][ControlRate] Anybody knows where to find
TMN 5?
Thank you all. I was talking about TM 5 (I though TMN 5 was the same
thing as I saw some other documents about rate control titled as TMN 8)
and that was the document I was looking for.
I saw it referred as 225b here (aka TM 4)
http://www.mpeg.org/MPEG/MSSG/tm5/Overview.html and in some other ITU-T
document which I don't recall right now. 
Thank you again, Mr. Sullivan.
2006/2/15, Gary Sullivan <garysull windows.microsoft.com>: 
	Alejandro et al,
	Are you talking about TMN 5 or TM 5?  Those are two different
things.  I suspect that you're talking about TM 5, which is the 1993
ITU-T AVC document 491 and (I think) MPEG output document N0400 and
perhaps the same thing as MPEG input document M457.  It is a committee
working-practice document, not a formal standard, so it is not for sale
in any official fashion. 
	I don't know why you see it referred to as 225b.  Maybe that was
an earlier version.
	See http://ftp3.itu.int/av-arch/avc-site/1993-1996/
<http://ftp3.itu.int/av-arch/avc-site/1993-1996/> 
	Best Regards,
	-Gary Sullivan
________________________________
		From: mp4-tech-bounces lists.mpegif.org [mailto:
mp4-tech-bounces lists.mpegif.org] On Behalf Of Alejandro Moya
		Sent: Wednesday, February 15, 2024 2:09 AM 
		To: mp4-tech lists.mpegif.org
		Subject: [Mp4-tech] [H.264][ControlRate] Anybody knows
where to find TMN 5? 
				Hi!
		I am currently studying some rate control proposals
(such as JVT-D030 and JVT-E069) and both refer to ISO/IEC
JTC1/SC29/WG11/93 - 225b also know as TMN 5; I think it is a rate
control for MPEG-2 but anyway I would read that document before
attempting with the newer ones, so I could learn the basis. 
		Where could I find it? I suppose I will have to pay for
it to ISO but not even in its website I found it...
		THANK YOU IN ADVANCE!
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