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Autres articles (101)
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ANNEXE : Les plugins utilisés spécifiquement pour la ferme
5 mars 2010, parLe site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)
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Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Problèmes fréquents
10 mars 2010, parPHP et safe_mode activé
Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site
Sur d’autres sites (12794)
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ffmpeg output seeking not accurate even after -i [closed]
3 septembre 2023, par hl037_In the documentation of ffmpeg, it is stated that if
-ss
is passed after-i
, then it is frame accurate (Other questions are for-ss
before-i
).

Here is my command :


ffmpeg -i vid.mkv -ss 53 -codec copy test.mkv -y 



However, it is still not accurate, and seems to jump to the nearest keyframe. Am i missing something ?


Note : the problem only occurs when the video steam is copied. If reencoded or discarded, it works as expected


Note2 (As I am doing other tries) : There are also strange things with audio :


ffmpeg -i vid.mkv -ss 53 -codec copy test1.mkv -y 
ffmpeg -i vid.mkv -ss 54 -codec copy test2.mkv -y 
ffmpeg -i test1.mkv -vn -c:a copy test1a.mkv -y
ffmpeg -i test2.mkv -vn -c:a copy test2a.mkv -y



- 

- test1.mkv is reported to be the right lenght, but the first frame correspond to the frame at 0:50 in original (end is good)
- test2.mkv is reported to be the right lenght, but the first frame correspond to the frame at 0:55 in original (end is good)
- test1a.mkv is the expected audio (starts at 0:53 of the original)
- test2a.mkv is the expected audio (starts at 0:54 of the original)










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GSoC : Support fast guided filter.
10 mai 2021, par Xuewei MengGSoC : Support fast guided filter.
Two modes are supported in guided filter, basic mode and fast mode.
Basic mode is the initial pushed guided filter without optimization.
Fast mode is implemented based on the basic one by sub-sampling method.
The sub-sampling ratio which can be defined by users controls the
algorithm complexity. The larger the sub-sampling ratio, the lower
the algorithm complexity.Signed-off-by : Xuewei Meng <xwmeng96@gmail.com>
Reviewed-by : Steven Liu <liuqi05@kuaishou.com> -
error while compiling x264 in linux
14 avril 2011, par kartulHey all
I'm trying to compile x264 under linux (x64). But it keeps throwing me an error. I've googled around but found nothing. Here's the commandline history :spin@around : /x264$ git clone git ://git.videolan.org/x264.git Cloning into x264... remote : Counting objects : 13539, done. remote : Compressing objects : 100% (4416/4416), done. remote : Total 13539 (delta 11005), reused 11225 (delta 9082) Receiving objects : 100% (13539/13539), 3.29 MiB | 2.79 MiB/s, done. Resolving deltas : 100% (11005/11005), done. spin@around : /x264/x264$ ./configure Found no assembler Minimum version is yasm-0.7.0 If you really want to compile without asm, configure with —disable-asm. spin@around : /x264/x264$ ./configure —disable-asm Platform : X86_64 System : LINUX asm : no avs : no lavf : no ffms : no gpac : no gpl : yes thread : posix filters : crop select_every debug : no gprof : no PIC : no shared : no visualize : no bit depth : 8
You can run 'make' or 'make fprofiled' now.
spin@around : /x264/x264$ make
gcc -Wshadow -O3 -ffast-math -Wall -I. -std=gnu99 -s -fomit-frame-pointer -fno-tree-vectorize -c -o x264.o x264.c
In file included from common/common.h:864,
from x264.c:33 :
common/rectangle.h : In function āx264_macroblock_cache_rectā :
common/rectangle.h:84 : error : āv4siā undeclared (first use in this function)
common/rectangle.h:84 : error : (Each undeclared identifier is reported only once
common/rectangle.h:84 : error : for each function it appears in.)
common/rectangle.h:84 : error : expected ā ;ā before āv16ā
common/rectangle.h:86 : error : ā__m128ā undeclared (first use in this function)
common/rectangle.h:86 : error : expected ā ;ā before āv16ā
common/rectangle.h:87 : error : expected ā ;ā before āv16ā
common/rectangle.h:89 : error : expected ā ;ā before āv16ā
common/rectangle.h:90 : error : expected ā ;ā before āv16ā
make : *** [x264.o] Error 1
spin@around : /x264/x264$and here is the file, from line 83 to 91 :
#if HAVE_VECTOREXT && defined(__SSE__) v4si v16 = v,v,v,v ;
M128( d+s*0+0 ) = (__m128)v16 ;
M128( d+s*1+0 ) = (__m128)v16 ;
if( h == 2 ) return ;
M128( d+s*2+0 ) = (__m128)v16 ;
M128( d+s*3+0 ) = (__m128)v16 ;
#else