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  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

Sur d’autres sites (10394)

  • FFMPEG crop video output is black screen, sound is good [on hold]

    11 janvier 2016, par Oum Alaa

    I cropped a video using ffmpeg command line, the output is black screen, the sound is clear and good :

    ffmpeg -i Original.mp4 -t 00:00:29 -vf "crop=634:300:0:60" Done.mp4

    ffmpeg version :

    ffmpeg version 0.8.17-4:0.8.17-0ubuntu0.12.04.1, Copyright (c) 2000-2014 the Libav developers

    built on Mar 16 2015 13:26:50 with gcc 4.6.3

    video information :

    mediainfo '--Inform=Video;%Width%x%Height%' Original.mp4
    
634x360

    Thanks in advance

  • ffmpeg : corrupt audio in usage of avfoundation

    3 janvier 2016, par Andy

    I am trying to record my desktop screen (MacBook Pro (Retina, 15-inch, Mid 2014), OSX 10.10.5) with audio. First, I have to find the devices for recording, video:1 and audio:0 in my case.

    User@User-MacBook-Pro:~/test$ ffmpeg -hide_banner -f avfoundation -list_devices true -i ""
    
[AVFoundation input device @ 0x7ff19a422320] AVFoundation video devices:
    
[AVFoundation input device @ 0x7ff19a422320] [0] FaceTime HD Camera
    
[AVFoundation input device @ 0x7ff19a422320] [1] Capture screen 0
    
[AVFoundation input device @ 0x7ff4b9c22320] [2] Capture screen 1
    
[AVFoundation input device @ 0x7ff19a422320] AVFoundation audio devices:
    
[AVFoundation input device @ 0x7ff19a422320] [0] Soundflower (2ch)
    
[AVFoundation input device @ 0x7ff19a422320] [1] Built-in Microphone
    
[AVFoundation input device @ 0x7ff19a422320] [2] Soundflower (64ch)
    
: Input/output error

    Then I run to capture the screen :

    ffmpeg -f avfoundation -i "1:0" out_desktop.mkv

    and the audio of the output stutters terribly.
    But if I use the second external screen (which is connect via HDMI) :

    ffmpeg -f avfoundation -i "2:0" out_ext.mkv

    Then I have no audio problems.

    So, what could be the cause of this behaviour ? Somehow the video device "Capture screen 0" causes the audio stutter.

    Here are the full outputs of the two commands above, Screen 0 :

    User@User-MacBook-Pro:~/test$ ffmpeg -f avfoundation -i "1:0" out.mkv
    
ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with Apple LLVM version 7.0.2 (clang-700.1.81)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5 --enable-nonfree --enable-vda
    
  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
[avfoundation @ 0x7fca1200da00] Selected pixel format (yuv420p) is not supported by the input device.
    
[avfoundation @ 0x7fca1200da00] Supported pixel formats:
    
[avfoundation @ 0x7fca1200da00]   uyvy422
    
[avfoundation @ 0x7fca1200da00]   yuyv422
    
[avfoundation @ 0x7fca1200da00]   nv12
    
[avfoundation @ 0x7fca1200da00]   0rgb
    
[avfoundation @ 0x7fca1200da00]   bgr0
    
[avfoundation @ 0x7fca1200da00] Overriding selected pixel format to use uyvy422 instead.
    
[avfoundation @ 0x7fca1200da00] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Input #0, avfoundation, from '1:0':
    
  Duration: N/A, start: 11734.092500, bitrate: 2822 kb/s
    
    Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2880x1800, 1000k tbr, 1000k tbn, 1000k tbc
    
    Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
    
File 'out.mkv' already exists. Overwrite ? [y/N] y
    
No pixel format specified, yuv422p for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    
[libx264 @ 0x7fca1390e000] MB rate (20340000000) > level limit (2073600)
    
[libx264 @ 0x7fca1390e000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7fca1390e000] profile High 4:2:2, level 5.2, 4:2:2 8-bit
    
[libx264 @ 0x7fca1390e000] 264 - core 148 r2601 a0cd7d3 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, matroska, to 'out.mkv':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv422p, 2880x1800, q=-1--1, 1000k fps, 1k tbn, 1000k tbc
    
    Metadata:
    
      encoder         : Lavc56.60.100 libx264
    
    Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 44100 Hz, stereo, fltp
    
    Metadata:
    
      encoder         : Lavc56.60.100 libvorbis
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (pcm_f32le (native) -> vorbis (libvorbis))
    
Press [q] to stop, [?] for help
    
frame=  969 fps= 29 q=-1.0 Lsize=    6911kB time=00:00:34.80 bitrate=1626.8kbits/s    
    
video:6475kB audio:396kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 0.591309%
    
[libx264 @ 0x7fca1390e000] frame I:4     Avg QP:15.77  size:1461092
    
[libx264 @ 0x7fca1390e000] frame P:246   Avg QP:16.00  size:  2608
    
[libx264 @ 0x7fca1390e000] frame B:719   Avg QP:13.91  size:   200
    
[libx264 @ 0x7fca1390e000] consecutive B-frames:  0.9%  0.4%  0.0% 98.7%
    
[libx264 @ 0x7fca1390e000] mb I  I16..4: 11.6% 43.3% 45.2%
    
[libx264 @ 0x7fca1390e000] mb P  I16..4:  0.0%  0.0%  0.1%  P16..4:  0.4%  0.0%  0.0%  0.0%  0.0%    skip:99.5%
    
[libx264 @ 0x7fca1390e000] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:39.9% L1:60.0% BI: 0.1%
    
[libx264 @ 0x7fca1390e000] 8x8 transform intra:41.6% inter:38.8%
    
[libx264 @ 0x7fca1390e000] coded y,uvDC,uvAC intra: 76.9% 77.9% 75.5% inter: 0.0% 0.1% 0.0%
    
[libx264 @ 0x7fca1390e000] i16 v,h,dc,p: 51% 34% 11%  4%
    
[libx264 @ 0x7fca1390e000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 17% 19%  7%  4%  3%  8%  5% 16%
    
[libx264 @ 0x7fca1390e000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 24% 10%  7%  6%  5%  8%  7% 12%
    
[libx264 @ 0x7fca1390e000] i8c dc,h,v,p: 59% 14% 18%  9%
    
[libx264 @ 0x7fca1390e000] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x7fca1390e000] ref P L0: 71.5%  3.4% 13.0% 12.1%
    
[libx264 @ 0x7fca1390e000] ref B L0: 46.6% 52.3%  1.1%
    
[libx264 @ 0x7fca1390e000] ref B L1: 95.1%  4.9%
    
[libx264 @ 0x7fca1390e000] kb/s:1525.48

    and Screen 1 :

    User@User-MacBook-Pro:~/test$ ffmpeg -f avfoundation -i "2:0" out.mkv
    
ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with Apple LLVM version 7.0.2 (clang-700.1.81)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5 --enable-nonfree --enable-vda
    
  libavutil      54. 31.100 / 54. 31.100
    
  libavcodec     56. 60.100 / 56. 60.100
    
  libavformat    56. 40.101 / 56. 40.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 40.101 /  5. 40.101
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  2.101 /  1.  2.101
    
  libpostproc    53.  3.100 / 53.  3.100
    
[avfoundation @ 0x7fc2e900da00] Selected pixel format (yuv420p) is not supported by the input device.
    
[avfoundation @ 0x7fc2e900da00] Supported pixel formats:
    
[avfoundation @ 0x7fc2e900da00]   uyvy422
    
[avfoundation @ 0x7fc2e900da00]   yuyv422
    
[avfoundation @ 0x7fc2e900da00]   nv12
    
[avfoundation @ 0x7fc2e900da00]   0rgb
    
[avfoundation @ 0x7fc2e900da00]   bgr0
    
[avfoundation @ 0x7fc2e900da00] Overriding selected pixel format to use uyvy422 instead.
    
[avfoundation @ 0x7fc2e900da00] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Input #0, avfoundation, from '2:0':
    
  Duration: N/A, start: 11809.126333, bitrate: 2822 kb/s
    
    Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2560x1080, 1000k tbr, 1000k tbn, 1000k tbc
    
    Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
    
File 'out.mkv' already exists. Overwrite ? [y/N] y
    
No pixel format specified, yuv422p for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    
[libx264 @ 0x7fc2ea82ac00] MB rate (10880000000) > level limit (2073600)
    
[libx264 @ 0x7fc2ea82ac00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7fc2ea82ac00] profile High 4:2:2, level 5.2, 4:2:2 8-bit
    
[libx264 @ 0x7fc2ea82ac00] 264 - core 148 r2601 a0cd7d3 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, matroska, to 'out.mkv':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv422p, 2560x1080, q=-1--1, 1000k fps, 1k tbn, 1000k tbc
    
    Metadata:
    
      encoder         : Lavc56.60.100 libx264
    
    Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 44100 Hz, stereo, fltp
    
    Metadata:
    
      encoder         : Lavc56.60.100 libvorbis
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (pcm_f32le (native) -> vorbis (libvorbis))
    
Press [q] to stop, [?] for help
    
frame=  755 fps= 30 q=-1.0 Lsize=    1025kB time=00:00:26.65 bitrate= 315.1kbits/s    
    
video:680kB audio:326kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 2.003084%
    
[libx264 @ 0x7fc2ea82ac00] frame I:4     Avg QP:13.22  size:145661
    
[libx264 @ 0x7fc2ea82ac00] frame P:191   Avg QP:19.87  size:   250
    
[libx264 @ 0x7fc2ea82ac00] frame B:560   Avg QP:28.31  size:   116
    
[libx264 @ 0x7fc2ea82ac00] consecutive B-frames:  1.1%  0.0%  0.4% 98.5%
    
[libx264 @ 0x7fc2ea82ac00] mb I  I16..4: 54.5% 29.2% 16.2%
    
[libx264 @ 0x7fc2ea82ac00] mb P  I16..4:  0.2%  0.1%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.6%
    
[libx264 @ 0x7fc2ea82ac00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.3%  0.0%  0.0%  direct: 0.0%  skip:99.7%  L0:69.2% L1:30.8% BI: 0.0%
    
[libx264 @ 0x7fc2ea82ac00] 8x8 transform intra:31.7% inter:13.1%
    
[libx264 @ 0x7fc2ea82ac00] coded y,uvDC,uvAC intra: 10.9% 8.8% 8.5% inter: 0.0% 0.0% 0.0%
    
[libx264 @ 0x7fc2ea82ac00] i16 v,h,dc,p: 69% 31%  0%  0%
    
[libx264 @ 0x7fc2ea82ac00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27%  5% 67%  0%  0%  0%  0%  0%  0%
    
[libx264 @ 0x7fc2ea82ac00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 25% 14%  3%  3%  4%  5%  4%  5%
    
[libx264 @ 0x7fc2ea82ac00] i8c dc,h,v,p: 92%  3%  4%  0%
    
[libx264 @ 0x7fc2ea82ac00] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x7fc2ea82ac00] ref P L0: 76.3%  1.7% 16.8%  5.2%
    
[libx264 @ 0x7fc2ea82ac00] ref B L0: 38.9% 56.9%  4.2%
    
[libx264 @ 0x7fc2ea82ac00] ref B L1: 97.3%  2.7%
    
[libx264 @ 0x7fc2ea82ac00] kb/s:208.84

    EDIT

    The main differences between the two (lengthy) outputs above via

    wdiff -n output1 output2 |colordiff

    is the resolution ([-2880x1800,-] {+2560x1080,+}) and the resulting MB rate ([-(20340000000)-] {+(10880000000)+}). So, what could increase the performance of ffmpeg ?

  • Revision 28559 : D’après http://thread.gmane.org/gmane.comp.web.spip.zone/12743 l’envoi du ...

    10 mai 2009, par real3t@… — Log

    D’après  http://thread.gmane.org/gmane.comp.web.spip.zone/12743 l’envoi du mot de passe de l’user de la db créé dynamiquement par la mutualisation facile serait un trou de sécurité... depuis 18 mois…

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