[Mp4-tech] [video] H.261 - H.263 software reference

pankaj bajpai pankaj_bajpai_iet operamail.com
Sat Oct 22 10:11:02 ESTEDT 2005 

Hi Savvas!!!
For H.263 you can look for TMN software. I think last updated version is TMN 3.0 or 3.1.
bye
----- Original Message -----
From: mp4-tech-request lists.mpegif.org
To: mp4-tech lists.mpegif.org
Subject: Mp4-tech Digest, Vol 27, Issue 15
Date: Fri, 21 Oct 2023 12:26:36 -0400 (EDT)
> 
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> Today's Topics:
> 
>     1. RE: Motion estimation (Andrew Krupiczka)
>     2. Re: Mp4-tech Digest, Vol 27, Issue 14 (Marcos Moecke)
>     3. [Mp4-tech][Audio] 3gp to aac audio converter (Dattaguru B.N.)
>     4. Re: [Audio-Tech] BSAC Encoder: Stereo mode issue (???)
>     5. [video] H.261 - H.263 software reference models
>        (Savvas Argyropoulos)

From: Andrew Krupiczka <andrewk vbrick.com>
To: hungary <mykerekes eml.cc> mp4-tech lists.mpegif.org
Subject: RE: [Mp4-tech] Motion estimation
Date: Wed, 19 Oct 2023 13:56:51 -0400
>
> 
> Hungary,
> 
> If you're referring to video encoding, then in general from a practical
> point of view it's almost exclusively limited to luma component,
> although using chroma could enhance your motion estimation results.
> 
> For a good resource, you might want to look at H.264 reference code
> http://iphome.hhi.de/suehring/tml/download/
> (warning: you need to spend a considerable amount of time to understand
> it :-(
> 
> Best regards,
> 
> Andrew
> 
> PS. Depending on what you exactly intend to achieve and what your
> environment/requirements are I'd encourage you to write your own code
> (basic ME is really a half page of code or so).
> 
> 
> 
> 
> 
> -----Original Message-----
> From: hungary [mailto:mykerekes eml.cc]
> Sent: Wednesday, October 19, 2023 4:31 AM
> To: mp4-tech lists.mpegif.org
> Subject: [Mp4-tech] Motion estimation
> 
> Hai Experts,
> 
> Do the motion estimation is carried only on Luma components
> or both luma and chroma components at the encoder side in general on YUV
> ?
> 
> Where can i find the C source code for primitive block based
> motion estimation algorithms ?
> 
> Any link will help
> 
> Regards
> MK
> --
>    hungary
>    mykerekes eml.cc
> 
> --
> http://www.fastmail.fm - Does exactly what it says on the tin
> 
> _______________________________________________
> NOTE: Please use clear subject lines for your posts. Include [audio,
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> indicate the type of question you have.
> 
> Note: Conduct on the mailing list is subject to the Antitrust guidelines
> found at
> http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php

From: Marcos Moecke <mmoecke gmail.com>
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech] Re: Mp4-tech Digest, Vol 27, Issue 14
Date: Wed, 19 Oct 2023 20:12:10 -0300
>
> 
> I think you can use only Luma or also Chroma components. Only the decoder
> part is defined by the H.264. The motion vector will be used for both
> components.
> 
> 
> 2005/10/19, mp4-tech-request lists.mpegif.org <
> mp4-tech-request lists.mpegif.org>:
> >
> > Send Mp4-tech mailing list submissions to
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> > Today's Topics:
> >
> > 1. Motion estimation (hungary)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Wed, 19 Oct 2023 01:30:51 -0700
> > From: "hungary" <mykerekes eml.cc>
> > Subject: [Mp4-tech] Motion estimation
> > To: mp4-tech lists.mpegif.org
> > Message-ID: <1129710651.25859.245504209 webmail.messagingengine.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Hai Experts,
> >
> > Do the motion estimation is carried only on Luma components
> > or both luma and chroma components at the encoder side in general on YUV
> > ?
> >
> > Where can i find the C source code for primitive block based
> > motion estimation algorithms ?
> >
> > Any link will help
> >
> > Regards
> > MK
> > --
> > hungary
> > mykerekes eml.cc
> >
> > --
> > http://www.fastmail.fm - Does exactly what it says on the tin
> >
> >
> > ------------------------------
> >
> > _______________________________________________
> > Please use clear subject lines for your posts. Include [audio, [video],
> > [systems], [general] or another apppropriate identifier to indicate the type
> > of question you have.
> >
> > Conduct on the mailing list is subject to the Antitrust guidelines found
> > at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php
> >
> > End of Mp4-tech Digest, Vol 27, Issue 14
> > ****************************************
> >
> 
> 
> 
> --
> Marcos Moecke
> Email: mmoecke gmail.com

From: Dattaguru B.N. <dattagurubn yahoo.com>
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech][Audio] 3gp to aac audio converter
Date: Thu, 20 Oct 2023 02:09:15 -0700 (PDT)
>
> 
> Dear Experts,
> 
> can anyone point me to the place where I can get the
> tool to convert .3gp audio into .aac audio.
> Is there any freely downloadable tools? If so,  please
> let me know.
> 
> Thanks in advance,
> Rgds,
> Datta
> 
> 
> 	
> 		
> __________________________________
> Yahoo! Mail - PC Magazine Editors' Choice 2005
> http://mail.yahoo.com

From: ??? <jida.ee91g nctu.edu.tw>
To: mp4-tech lists.mpegif.org
Subject: Re: [Mp4-tech] [Audio-Tech] BSAC Encoder: Stereo mode issue
Date: Thu, 20 Oct 2023 18:45:56 +0800
>
> 
> Hi~
> 
>      I remember there is a bug in MPEG BSAC encoder, at least from 
> the software I get.
>      In sam_encode_bsac.c, the channel index for last_freq is wrong,
>     and this lets the arrays point to unkown address in 2th channels.
> Best Regards,
>          Jida
>    ----- Original Message -----
>    From: Ashok Magadum
>    To: mp4-tech lists.mpegif.org
>    Sent: Thursday, October 06, 2023 3:35 PM
>    Subject: [Mp4-tech] [Audio-Tech] BSAC Encoder: Stereo mode issue
> 
> 
>    Hello All,
> 
> 
> 
>    I am using MPEG BSAC encoder for generating BSAC streams.
> 
>    The code is working fine for MONO audio data and not working
> 
>    for STEREO audio data (generated BSAC stream seems to be
> 
>    wrong). Even the compressed file size for stereo data is lesser than
> 
>    that of same duration and sampling  frequency MONO audio data.
> 
> 
> 
>    I am using following options for executing the EXE
> 
> 
> 
>    For mono files:
> 
>    -eo ".wav" -eb ".mp4" -ni -nh -ms ""  -m tf -r 64000  -vr -c " 
> -aac_bsac"  cast_mono.wav  cast_mono.mp4
> 
> 
> 
>    For stereo files:
> 
>    -eo ".wav" -eb ".mp4" -ni -nh -ms ""  -m tf -r 128000  -vr -c " 
> -aac_bsac"  cast_stereo.wav  cast_stereo.mp4
> 
> 
> 
>    Please help me for resolving this issue.
> 
> 
> 
>    Thanks
> 
>    Ashok
> 
> 
> 
> ------------------------------------------------------------------------------
> 
> 
>    _______________________________________________
>    NOTE: Please use clear subject lines for your posts. Include 
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>    Note: Conduct on the mailing list is subject to the Antitrust 
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From: Savvas Argyropoulos <sargyrop auth.gr>
To: mp4-tech lists.mpegif.org
Subject: [Mp4-tech] [video] H.261 - H.263 software reference models
Date: Thu, 20 Oct 2023 16:11:18 +0300
>
> 
> Hi all,
> 
> could someone please inform me where I could find reference 
> software for H.261 and H.263(+/++) standards?
> I need to make some comparisons between new codecs based on H.264 
> and older ones.
> 
> Thanks in advance,
> 
> Savvas Argyropoulos
> Electrical and computer Engineer, PhD Candidate
> Aristotle University of Thessaloniki, Hellas

>
> 
> _______________________________________________
> Please use clear subject lines for your posts. Include [audio, 
> [video], [systems], [general] or another apppropriate identifier to 
> indicate the type of question you have.
> 
> Conduct on the mailing list is subject to the Antitrust guidelines 
> found at 
> http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php

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