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Collections - Formulaire de création rapide
19 février 2013, par
Mis à jour : Février 2013
Langue : français
Type : Image
Autres articles (12)
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Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...) -
Les thèmes de MediaSpip
4 juin 20133 thèmes sont proposés à l’origine par MédiaSPIP. L’utilisateur MédiaSPIP peut rajouter des thèmes selon ses besoins.
Thèmes MediaSPIP
3 thèmes ont été développés au départ pour MediaSPIP : * SPIPeo : thème par défaut de MédiaSPIP. Il met en avant la présentation du site et les documents média les plus récents ( le type de tri peut être modifié - titre, popularité, date) . * Arscenic : il s’agit du thème utilisé sur le site officiel du projet, constitué notamment d’un bandeau rouge en début de page. La structure (...) -
Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)
Sur d’autres sites (3213)
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How can I delete all folders of a specific name without deleting Contents in it [on hold]
17 janvier 2015, par ChatcafeHow do I delete all Folders with a specific name (e.g. 128Kbps_Songs) without deleting its files
For example if I have directory "MP3_SONGS" with subdirectories "A", "B", "C" and each subdirectory has MANY directory Contains Film Name "FILM_NAME1", "FILM_NAME2", "FILM_NAME3" in it, In That Each Film NAme I have specific Folder NAme (128Kbps_Songs) in this "128Kbps_Songs" Folder I have That Film mp3 Songs Files
how can I remove the Folder "128Kbps_Songs", in Each Film_Name directory and Have to get these mp3 songs in that FILM_NAME.. ( Have to Delete 128Kbps_Songs Folder in all FILM_NAME without deleting the mp3 Songs in it, have to get the mp3 in FILM_NAME Directory..
MP3_SONGS (Parent Directory) ------ A , B, C
A (Sub Directory1) ------ FILM_NAME1 , FILM_NAME2
B (Sub Directory2) ------ FILM_NAME3 , FILM_NAME4
c (Sub Directory3) ------ FILM_NAME5 , FILM_NAME6
FILM_NAME1 (Directory) ---- 128Kbps_Songs (Directory) ------ FILM_NAME1(MP3 Files)
FILM_NAME2 (Directory) ---- 128Kbps_Songs (Directory) ------ FILM_NAME2(MP3 Files)
FILM_NAME3 (Directory) ---- 128Kbps_Songs (Directory) ------ FILM_NAME3 MP3 Files
FILM_NAME4 (Directory) ---- 128Kbps_Songs (Directory) ------ FILM_NAME4 MP3 Files
FILM_NAME5 (Directory) ---- 128Kbps_Songs (Directory) ------ FILM_NAME5 MP3 Files
FILM_NAME6 (Directory) ---- 128Kbps_Songs (Directory) ------ FILM_NAME6 MP3 Files
Need Files in:
FILM_NAME1 (Directory) ------ FILM_NAME1 MP3 Files
FILM_NAME2 (Directory) ------ FILM_NAME2 MP3 Files
FILM_NAME3 (Directory) ------ FILM_NAME3 MP3 Files
FILM_NAME4 (Directory) ------ FILM_NAME4 MP3 Files
FILM_NAME5 (Directory) ------ FILM_NAME5 MP3 Files
FILM_NAME6 (Directory) ------ FILM_NAME6 MP3 Files
> if 128Kbps_Songs directory exits there only want this changes -
What is data anonymization in web analytics ?
11 février 2020, par Joselyn Khor — Analytics Tips, Privacy -
Statically built FFMPEG binary segmentation fault
12 février 2020, par stevendesuI want to create a custom build of FFMPEG which rips out everything except for the ability to transmux HLS videos to MP4, and I need this build to be 100% static with no external dependencies
I tried using the following configuration :
./configure \
--extra-cflags='-static -static-libstdc++ -static-libgcc' \
--extra-cxxflags='-static -static-libstdc++ -static-libgcc' \
--extra-ldflags='-static -static-libstdc++ -static-libgcc' \
--pkg-config-flags='--static' \
--enable-static \
--disable-shared \
--disable-runtime-cpudetect \
--disable-autodetect \
--disable-ffplay \
--disable-ffprobe \
--disable-doc \
--disable-avdevice \
--disable-swresample \
--disable-swscale \
--disable-postproc \
--disable-pthreads \
--disable-w32threads \
--disable-os2threads \
--enable-network \
--disable-dct \
--disable-dwt \
--disable-error-resilience \
--disable-lsp \
--disable-lzo \
--disable-mdct \
--disable-rdft \
--disable-fft \
--disable-faan \
--disable-pixelutils \
--disable-encoders \
--disable-decoders \
--disable-hwaccels \
--disable-muxers \
--enable-muxer=mov \
--enable-muxer=mp4 \
--disable-demuxers \
--enable-demuxer=hls \
--enable-demuxer=mpegts \
--enable-demuxer=h264 \
--enable-demuxer=aac \
--disable-parsers \
--enable-parser=h264 \
--enable-parser=aac \
--disable-bsfs \
--disable-protocols \
--enable-protocol=tcp \
--enable-protocol=tls \
--enable-protocol=http \
--enable-protocol=https \
--enable-protocol=hls \
--disable-indevs \
--disable-outdevs \
--disable-devices \
--disable-filters \
--disable-alsa \
--disable-appkit \
--disable-avfoundation \
--disable-bzlib \
--disable-coreimage \
--disable-iconv \
--disable-lzma \
--enable-openssl \
--disable-sndio \
--disable-sdl2 \
--disable-securetransport \
--disable-xlib \
--disable-zlib \
--disable-amf \
--disable-audiotoolbox \
--disable-cuda-llvm \
--disable-cuvid \
--disable-d3d11va \
--disable-dxva2 \
--disable-ffnvcodec \
--disable-nvdec \
--disable-nvenc \
--disable-v4l2-m2m \
--disable-vaapi \
--disable-vdpau \
--disable-videotoolbox \
--disable-debugThis looked about like what I wanted :
install prefix /usr/local
source path .
C compiler gcc
C library glibc
ARCH x86 (generic)
big-endian no
runtime cpu detection no
standalone assembly yes
x86 assembler nasm
MMX enabled yes
MMXEXT enabled yes
3DNow! enabled yes
3DNow! extended enabled yes
SSE enabled yes
SSSE3 enabled yes
AESNI enabled yes
AVX enabled yes
AVX2 enabled yes
AVX-512 enabled yes
XOP enabled yes
FMA3 enabled yes
FMA4 enabled yes
i686 features enabled yes
CMOV is fast yes
EBX available yes
EBP available yes
debug symbols no
strip symbols yes
optimize for size no
optimizations yes
static yes
shared no
postprocessing support no
network support yes
threading support no
safe bitstream reader yes
texi2html enabled no
perl enabled yes
pod2man enabled yes
makeinfo enabled no
makeinfo supports HTML no
External libraries:
openssl
External libraries providing hardware acceleration:
Libraries:
avcodec avfilter avformat avutil
Programs:
ffmpeg
Enabled decoders:
Enabled encoders:
Enabled hwaccels:
Enabled parsers:
aac h264
Enabled demuxers:
aac h264 hls mpegts
Enabled muxers:
mov mp4
Enabled protocols:
hls http https tcp tls
Enabled filters:
aformat anull atrim format hflip null transpose trim vflip
Enabled bsfs:
null
Enabled indevs:
Enabled outdevs:
License: LGPL version 2.1 or laterIt included several filters which I won’t ever need or use, but these filters are pulled in automatically if you don’t specify
--disable-avfilter
, and specifying--disable-avfilter
prevents theffmpeg
binary from being produced. So I’m stuck with those.Using these parameters and then running
make
, I received a binary that was about 5.9 MB in size and looked right :$> ldd ffmpeg
not a dynamic executableBut when I try to run it :
$> ./ffmpeg -version
Segmentation faultUsing valgrind to try and inspect the cause of the segmentation fault :
$> valgrind ./ffmpeg -version
.... lots of stuff ...
==61362== Jump to the invalid address stated on the next line
==61362== at 0x0: ???
==61362== by 0x70BB1B: ??? (in /src/FFmpeg/ffmpeg)
==61362== by 0x70B2E6: ??? (in /src/FFmpeg/ffmpeg)
==61362== by 0x4033F9: ??? (in /src/FFmpeg/ffmpeg)
==61362== by 0x1FFF000677: ???
==61362== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==61362==
==61362==
==61362== Process terminating with default action of signal 11 (SIGSEGV)
==61362== Bad permissions for mapped region at address 0x0
==61362== at 0x0: ???
==61362== by 0x70BB1B: ??? (in /src/FFmpeg/ffmpeg)
==61362== by 0x70B2E6: ??? (in /src/FFmpeg/ffmpeg)
==61362== by 0x4033F9: ??? (in /src/FFmpeg/ffmpeg)
==61362== by 0x1FFF000677: ???
==61362==
==61362== HEAP SUMMARY:
==61362== in use at exit: 0 bytes in 0 blocks
==61362== total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==61362==
==61362== All heap blocks were freed -- no leaks are possible
==61362==
==61362== For counts of detected and suppressed errors, rerun with: -v
==61362== Use --track-origins=yes to see where uninitialised values come from
==61362== ERROR SUMMARY: 93 errors from 90 contexts (suppressed: 0 from 0)
Segmentation faultAttempting to access memory at location
0x0
sounds like trying to follow a null pointer. But I’m not sure how to fix this.gdb backtrace
When I first ran
gdb ./ffmpeg
gdb immediately gave me a segmentation fault and I wasn’t kicked into the gdb REPL, so I couldn’t investigateAfter rebuilding ffmpeg I was able to get in this time :
$> gdb ./ffmpeg
GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later /gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
/www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
/www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ffmpeg...done.
(gdb) r
Starting program: /src/FFmpeg/ffmpeg
warning: Error disabling address space randomization: Operation not permitted
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x0000000000f9a8d5 in __register_frame_info_bases.part.6 ()
#2 0x00000000004445fd in frame_dummy ()
#3 0x0000000000000001 in ?? ()
#4 0x0000000000ebd20c in __libc_csu_init ()
#5 0x0000000000ebc9d7 in __libc_start_main ()
#6 0x000000000044451a in _start ()
(gdb)I tried grep’ing the code base for
__register_frame_info_bases
and found nothing. So I’m not really sure where to go from hereA fix, but not an explanation
By randomly removing configuration parameters and rebuilding I discovered that
--disable-pthreads
was causing the segmentation fault. When I remove this, ffmpeg runs just fineI don’t know why this is the case, though. Why would they make it possible to remove something that you need to run ?