[x264-devel] Current x264 worse than before?

Mon Apr 21 09:00:55 CEST 2008

I ran a test comparing x264_r819 and r736, using all default settings encoding 720x576 sequencies on a Core II 1.8G computer. My result was like r819 has lower PSNRs AND lower speed, and I think the result has statistical significance. Any thoughts? -Peter

p.s. I used about 15 sequences averaging ~300 frames each. Average bitrate is set to 1000 kbps. The exe files were directly taken from 264 official website. Running environment is windows XP with pthread dlls downloaded from Pthread Project.

----- Original Message ----- 
From: <x264-devel-request at videolan.org>
To: <x264-devel at videolan.org>
Sent: Wednesday, April 16, 2008 6:00 PM
Subject: x264-devel Digest, Vol 11, Issue 18

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> Today's Topics:
> 
>   1. Any x264 direct show filter available? (???)
>   2. Re: Any x264 direct show filter available? (Martin Lindhe)
>   3. Re: x264 decoder (alessandro lusci)
>   4. Re: x264 decoder (Alex Giladi)
>   5. commit: add "SECTION_RODATA" before "SECTION .text" to setup
>      the fakegot label used in macho binaries. (Guillaume Poirier )
>      (git version control)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Tue, 15 Apr 2008 17:10:45 +0800
> From: "???" <wu.pengcheng at pixela-china.com>
> Subject: [x264-devel] Any x264 direct show filter available?
> To: <x264-devel at videolan.org>
> Message-ID: <000401c89ed8$976f7dd0$3d0aa8c0 at videoCodec.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Only found an old doom9 thread, and the link has long died. Is it difficult to wrap up x264 in a DS filter? Any help?
> 
> -Peter Wu
> 
> ------------------------------
> 
> Message: 2
> Date: Tue, 15 Apr 2008 12:22:51 +0200
> From: Martin Lindhe <martin at startwars.org>
> Subject: Re: [x264-devel] Any x264 direct show filter available?
> To: Mailing list for x264 developers <x264-devel at videolan.org>
> Message-ID: <480481FB.3060406 at startwars.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> ??? wrote:
>> Only found an old doom9 thread, and the link has long died. Is it difficult to wrap up x264 in a DS filter? Any help?
>>
>> -Peter Wu
>>   
> 
> Perhaps ffdshow is what you are looking for?
> http://sourceforge.net/projects/ffdshow-tryout/
> 
> best regards
> Martin Lindhe
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Tue, 15 Apr 2008 22:43:18 +0200
> From: alessandro lusci <luce.al at tiscali.it>
> Subject: Re: [x264-devel] x264 decoder
> To: x264-devel at videolan.org
> Message-ID: <1208292198.6334.0.camel at agrume-laptop>
> Content-Type: text/plain
> 
> Hi Toby,
> At the moment I need a system that makes coding (yuv-->264)and decondig
> (264-->yuv) to test information loss and SNR reduction caused by
> compression.I also need to add noise to the coded stream before decoding
> to test how a noisy channel could affect the signal.
> I'm doing it for my thesis!!!
> I've tried ffMpeg and I find that It works fine.
> Now I have to write the source code to calculate Entropy and SNR of the
> stream.
>  
> 
> thanks for your help
> 
> 
> 
> ------------------------------
> 
> Message: 4
> Date: Tue, 15 Apr 2008 14:48:43 -0700
> From: "Alex Giladi" <alex.giladi at gmail.com>
> Subject: Re: [x264-devel] x264 decoder
> To: "Mailing list for x264 developers" <x264-devel at videolan.org>
> Message-ID:
> <57a9e15d0804151448g7a7f2e1hbb7071a6bd927672 at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
> 
> Alessandro,
> If you use the verbose mode of x264 (--verbose) and calculate
> PSNR/SSIM, you can capture the output (stderr) and parse it.
> Each line will contain SSIM and PSNR figures for the corresponding frame.
> Good luck with the thesis!
> Alex.
> 
> P.S. The same HHI page Toby mentioned
> (http://iphome.hhi.de/suehring/tml/) has the JVT encoder which does
> exactly the same; it also outputs the reconstructed yuv in parallel
> with the encoded bitstream.
> --a
> 
> 
> On Tue, Apr 15, 2008 at 1:43 PM, alessandro lusci <luce.al at tiscali.it> wrote:
>> Hi Toby,
>>  At the moment I need a system that makes coding (yuv-->264)and decondig
>>  (264-->yuv) to test information loss and SNR reduction caused by
>>  compression.I also need to add noise to the coded stream before decoding
>>  to test how a noisy channel could affect the signal.
>>  I'm doing it for my thesis!!!
>>  I've tried ffMpeg and I find that It works fine.
>>  Now I have to write the source code to calculate Entropy and SNR of the
>>  stream.
>>
>>
>>  thanks for your help
>>
>>
>>
>>  _______________________________________________
>>  x264-devel mailing list
>>  x264-devel at videolan.org
>>  http://mailman.videolan.org/listinfo/x264-devel
>>
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Wed, 16 Apr 2008 10:52:57 +0200 (CEST)
> From: git at videolan.org (git version control)
> Subject: [x264-devel] commit: add "SECTION_RODATA" before "SECTION
> .text" to setup the fakegot label used in macho binaries. (Guillaume
> Poirier )
> To: <x264-devel at videolan.org>
> Message-ID: <20080416085257.288681E808 at skanda.videolan.org>
> Content-Type: text/plain; charset=UTF-8
> 
> x264 | branch: master | Guillaume Poirier <gpoirier at fili.caps-entreprise.com> | Wed Apr 16 10:46:15 2008 +0200| [d50f9cbdc47cdb20d066fe19d616e95ef9560358]
> 
> add "SECTION_RODATA" before "SECTION .text" to setup the fakegot label used in macho binaries.
> This fixes compilation with --enable-pic
> Requires Yasm 0.7.0 or newer
> Patch by Dave Lee % davelee P com A gmail P com %
> 
>> http://git.videolan.org/gitweb.cgi/x264.git/?a=commit;h=d50f9cbdc47cdb20d066fe19d616e95ef9560358
> ---
> 
> common/x86/cabac-a.asm |    2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/common/x86/cabac-a.asm b/common/x86/cabac-a.asm
> index 1708a06..26a20d0 100644
> --- a/common/x86/cabac-a.asm
> +++ b/common/x86/cabac-a.asm
> @@ -22,6 +22,8 @@
> 
> %include "x86inc.asm"
> 
> +SECTION_RODATA
> +
> SECTION .text
> 
> cextern x264_cabac_range_lps
> 
> 
> 
> ------------------------------
> 
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> End of x264-devel Digest, Vol 11, Issue 18
> ******************************************