**methods for better than h.264 compression ratio...**Dear All,
We are starting an academic project to build a codec which should
have much better compression ratios than h.264.
Computational complexity of the new codec is assumed to be infinite
for now.
There must be methods that have been rejected for having high
computational complexity. Any hints for us.
Thanks in advance...
On May 3, 9:53 am, recoder <kurtulmeh...@gmail.com> wrote:
> Dear All,
> We are starting an academic project to build a codec which should
> have much better compression ratios than h.264.
> Computational complexity of the new codec is assumed to b...

**compression in H.264**hello all,
i did an implementation in matlab for H.264 encoding and decoding (integer 4x4) = transform and quantization then the inverse, but i had one small problem with it when i used the blkproc(...,...,...,)i used Y = AXA place DCT,.
anyone can write the code of quantization?thank you .
julien <jose50@seznam.cz> wrote in message <23776078.1210022845905.JavaMail.jakarta@nitrogen.mathforum.org>...
> hello all,
> i did an implementation in matlab for H.264 encoding and decoding (integer 4x4) = transform and quantization then the inverse, but i had one small problem with ...

**H.263 == MPEG4?**I am confused - is H.263 the video codec used in MPEG4 or is it not?
--
% Randy Yates % "She's sweet on Wagner-I think she'd die for Beethoven.
%% Fuquay-Varina, NC % She love the way Puccini lays down a tune, and
%%% 919-577-9882 % Verdi's always creepin' from her room."
%%%% <yates@ieee.org> % "Rockaria", *A New World Record*, ELO
http://home.earthlink.net/~yatescr
Randy Yates wrote:
> I am confused - is H.263 the video codec used in MPEG4 or is it not?
Randy,
MPEG-4 is a collection o...

**h. 264 compression overview**Can someone give me a basic overview of how h. 264 does motion
prediction for video compression?
To render intermediate frames, does it send motion parameters
describing the change in motion from a previous frame? Or can it make a
prediction based on the previous and next frames?
Thanks...
...

**H.264/MPEG4 AVC**hi is there anyone working on H.264/MPEG4 part10 AVC .I am currently working on that project. Can contact me on kotharisaransh@ymail.com
...

**h.264 or mpeg 4 or 263**HI
I wonder whether the reference code of this coders is freely available?
And where would that be?
Bubu
u can finf H.263 and mp4 on helixcommunity.org The code section is
down and expected to be up soon. H.264 might be difficult to get as
people are a bit slow in coding and even slower in sharing!!
can't help u more than that but hope u get the code soon.
cheers,
prakash
bubu_1313@yahoo.co.uk (bubu) wrote in message news:<6a61c4e7.0402261536.5901932f@posting.google.com>...
> HI
> I wonder whether the reference code of this coders is freely available?
>
> And wher...

**better video compression than h.264 in the market?**Hi All,
Is there anything better than h.264 in the market? In terms of
bandwidth. Could be a academic project or a professional
product/algorithm.
Thanks
...

**filter to convert video stream from MPEG2 to H.264?**Hi,
I've been tasked with finding a solution for this. The video camera
will be generating MPEG2 output. It needs to be compressed to H.264,
via a filter and then sent across the Internet.
I have not been able to find a suitable filter for this purpose
though. Does anyone know if one is available?
Thanks,
S
...

**Code for matlab H.264 MPEG4 Part10 AVC**Hello everyone,
Can anyone please tell me from where can i get the matlab source code for H.264/MPEG4 part10 AVC .
Thanks
Saransh
"Saransh Kothari" <kotharisaransh@ymail.com> wrote in message <h1isfp$253$1@fred.mathworks.com>...
> Hello everyone,
> Can anyone please tell me from where can i get the matlab source code for H.264/MPEG4 part10 AVC .
> Thanks
> Saransh
you're joking, in the matlab forum?
if you want some real, fast code head over to the doom9 forum and get source code for x264/mpeg4 there are a f...

**implement the MPEG4 & H.264 in DSP & FPGA**HI, everyone, I am new here. And nice to find such a good place to exchang
experiences.
I have been doing H.264 & MPEG4 software codec in Matlab and C++ for th
past years, and now have to move into the hardware implementations.
The board I need to implement with is TMS320DM642GNZ for encoder, o
Altera Cyclone II ( EPC2C35 ).
I do not have a clear idea of where to start with. I have already have th
softward codec for MPEG4 & H.264 in C++ . Anybody could give me some advic
to start with ? Or some books to read? Or some useful web links I will b
greatly appreciated!
Leo
rocpp wrot...

**The "H.264 and MPEG-4 Video Compression" book recommendations**Hi,
I'm thinking about implementing a H.264 decoder as a personal project
but the specification costs =A3100. So I think instead of getting the
spec. I could just get the "H.264 and MPEG-4 Video Compression" book
by Iain Richardson. Has anyone bought this book? If so, then is it
possible to implement a functional H.264 decoder using only that book,
or is the specification needed?
Is it a good book to have anyway, regardless of whether one has the
specification or not? Perhaps someone could recommend a different
book.
Thanks,
David
On Mar 16, 4:21 am, pistmas...@googlemail...

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Contact:
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**need for new Transfer Syntax for MPEG4 AVC H.264 Level 4.2**We proposed a new work item for the upcoming DSC meeting in Vienna for an u=
pdated new Transfer Syntax to include the MPEG-4 AVC / H.264 Level 4.2. Cur=
rently the DICOM Standards is limited to MPEG-4 Level 4.1 which doesn't al=
low the recoding of HD videos with 1920*1080 at frame rates of 50/60 Hz.=20
We are propsing to update this limitation and resume the work of Working Gr=
oup 13 "Visible Light".=20
Are there any video generating / consuming organizations who want to partic=
ipate?
...

**Codec H.261 or H.263**Hi,
I am trying to find some companies which offer these codecs (mainly H.
261) for DSPs but it is very difficult, only H.264. Do you know any
companies which currectly can offer them?
Thanx
Jajo
...

**About H.264**Dear all,
In H.264, there is a emulation_prevention_byte 0x03 being added when
the bit pattern 0x000000, 0x000001, 0x000002, 0x000003. Would there be
someone that can tell me why it needed to be added for 0x000000 and
0x000002.
Thank a lot in advance.
Regards,
clover
...

**H.263**hi all ,
I have worked woth JPEG and Gif kind of codec .. Now i want to learn
more about the H.263/ H.264
kind of Codec. can you please give me some Solid Reading matarial i am
getting lots of Junk on Internet and got
confusion what to read. or tell me some Sites which explain all the
Block digram of the same.
Regards,
Karuensh
You can get the standards of H.263 and H.264 from the ITU-T site
http://www.itu.int/rec/T-REC-H
Regards,
Raghuram
On Mar 19, 6:47 pm, "karunesh" <karunesh....@gmail.com> wrote:
> hi all ,
>
> I have worked woth JPEG and Gif kind of code...

**About H.264**Dear all,
In H.264, there is a emulation_prevention_byte 0x03 being added when
the bit pattern 0x000000, 0x000001, 0x000002, 0x000003. Would there be
someone that can tell me why it needed to be added for 0x000000 and
0x000002.
Thank a lot in advance.
Regards,
clover
0x000001 is used for detection of start and both 0x000001 & 0x000000
are used for detection of end of nal unit. Don't know about 0x000002.
Regards
Piyush
cloverleafland@mail.hongkong.com (Clover) wrote in message news:<1ab0464d.0405312016.5fb19ad0@posting.google.com>...
> Dear all,
>
> In H.264, there...

**About H.264**Dear all,
In H.264, there is a emulation_prevention_byte 0x03 being added when
the bit pattern 0x000000, 0x000001, 0x000002, 0x000003. Would there be
someone that can tell me why it needed to be added for 0x000000 and
0x000002.
Thank a lot in advance.
Regards,
clover
...

**H.264**Hi Folks,
Right now I started work on H.264 Decoder,So I want implement the 'C'
source code of H.264 decoder on scilab. Is it possible?? My obejtive to
implement the codec on scilab is learn more things in algorithm levels.
Thanks & Regards,
Umesh
Dear Umesh,
I think you can work on ffmpeg, and add h264 to it.
I'm working on an image and video processing toolbox
(http://sivp.sf.net)
ffmpeg is used in our toolbox, but i found h264 is not supported by
ffmpeg.
so you can add h264 to ffmpeg.
Thanks Shiqi Yu,
I was in long leave so I couldnt replied u soon ...

**new in H.264**hi
i would like to reimplement h.264 as the part of my curriculam
but i have only basic idea about immage processing .now i am trying to
study the standerds of H.264 but i think ,it is very difficult to
understsnd .from where i got good meterials abut this topic
what are the main blocks in it ?
How DCT is perfoming in it ?
what are the main differance between mpeg4 part2 and part10?
I am very thankfull to you if give me adirection
rkochery
...

**artifacts in h.264**hey all
how artefacts are generated during image compression please let me know
thanks in advance
prakash
Hi prakash,
Most video compression standards, including ITUT H.263 [1-2] and MPEG-4
[3], use a block-based discrete cosine transform (DCT) and a
block-based motion compensation (MC). The 8=D78 block-based DCT scheme,
which is used to pack information into a few
transform coefficients, takes advantage of the spatial correlation
property of images. However, this blockbased coding induces the
well-known blocking artifacts,
corner outliers, and ringing noise, particularly, when the image is...

**H.263 Bitstreams**Hi All,
I am new to this group. I am working on developing the H.263
Decoder. and recently we have finished the Mpeg4 (Base Line Profile).
Plz let
me know the pointer or pointer to any site for the conformance streams
of H.263 free or paid or any ITU-T link so that we can test our
Decoder.
Thanks & Regards,
Rahul
...

**Querry on H.264**Hi,
I am DSP engineer, right now iam working with small firm.
I ma going start the H.264 encoder, Please any body can help me out
finding the best TI processor on which i can start implemeting the
H.264.
I am starting this H.264 codec as a generic codec so that i can mould
it after words to any processor with basic Implemention ..
Please help which is the most generic processsor of TI on which the
H.264 is implemeted and which can give the maximum advantage in
implemeting the H.264 on Fixed point processor.
Thanks in advance,
Harsha S
hi,
in comp.dsp i've seen a lot of discussions
a...

**Question about H.264**Is it there a way to de-select adaptive quantization for 1 frame
movies in the JM and KTA source codes?
...