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12th March 2006, 18:57 | #1 | Link |
clueless n00b
Join Date: Oct 2001
Location: somewhere over the rainbow
Posts: 10,579
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x264 development
This is a partial continuation of the former x264 development thread. This thread is meant purely for development purposes, which does not include making any feature requests, especially not for features to be added to the VfW interface!. Any VfW relates issues have to go here instead. Any bugreports also do not belong to this thread but either in the VfW thread, or the x264 cli bugreport thread.
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20th March 2006, 20:19 | #2 | Link |
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Join Date: Mar 2006
Posts: 8
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I am new to x264 code
The decoder testing part in x264.c was removed some months ago and it has not returned since then. The exact release was a snapshot of 24-08-2005. I want to work on the decoder for a project of my own. In that old snapshot the only thing in the coments was something like "The decoder test part is not working and we would appreciate some help in this direction". I would like to know what eactly were the problems in this regard and how much work i would have to put in to get it working again ? |
20th March 2006, 20:46 | #3 | Link |
x264 developer
Join Date: Sep 2004
Posts: 2,392
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The decoder supposedly supports baseline profile only. I have no idea how close to working it was in 2004, since I have never compiled it. In addition to just making it work, much will need to be updated to match changes in the functions shared with the encoder, which have been modified since then.
Last edited by akupenguin; 3rd October 2008 at 22:29. Reason: typo |
21st March 2006, 01:52 | #11 | Link |
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Join Date: Jan 2006
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I have implemented the x264 decoder supported baseline profile several weeks ago. Unexpected, the current x264 program structure is not suitable for decoder. Especially of the interpolation module and the macroblock context cache load/save module. The experimental results show that it's half lower than ffmpeg libavcodec.
However, I won't stop improving my decoder. For I think the structure of h.264 decoder of ffmpeg libavcodec is so bad. And it's decoding speed is not fast enough.
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21st March 2006, 03:21 | #12 | Link | |
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Quote:
And now my question to the developers. What is to be done to the X264 encoder in order to improve visual quality and compressibility (i.e. what features are yet to be implemented) ? Is there a roadmap for improving or anything else ? It is always interesting to know in advance about what we may expect in the future, isn't it ? Thanks |
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21st March 2006, 04:27 | #14 | Link |
Banned
Join Date: May 2005
Location: Serbia
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Well, Leo 69, try to read TODO list from http://students.washington.edu/lorenm/src/x264/todo.txt
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21st March 2006, 17:05 | #16 | Link |
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I don't know for sure, but I think that RD subpel motion estimation(--subme 7) is a old patch, with necessary changes.
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5th April 2006, 19:05 | #18 | Link |
Chaos Energy Creator User
Join Date: Sep 2005
Posts: 49
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Is the in-loop filter adaptive??? I made a high bitrate encode (720x576 2500 kbps) once with in-loop and once without! I can't see a difference between them!!!!!!
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5th April 2006, 19:10 | #19 | Link |
Mr. Sandman
Join Date: Sep 2003
Location: Haddonfield, IL
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yes it is.
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MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!! |
5th April 2006, 20:27 | #20 | Link |
Chaos Energy Creator User
Join Date: Sep 2005
Posts: 49
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Thanks for making it clear to me!!!
In the Sticky: "MPEG-4 AVC/H.264 Information" bond doesn't say anything about adaptive loop in x264!!!
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Tags |
coding, development, x264 dev |
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