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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • L’agrémenter visuellement

    10 avril 2011

    MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
    Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté.

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

Sur d’autres sites (7980)

  • convert exr filesequence with ffmpeg and x264 [closed]

    29 novembre 2012, par user1863947

    When i convert a exr sequence into quicktime mov file using ffmpeg and x264 codec it codes the video but in quicktime player and windows media player its just black ! but when i open it up with vlc i can see the image and it looks fine. When i try the same thing with a jpg sequence instead of exr it works perfect ! does anyone have an idea what that could be ?

    here is my ffmpeg code :

    ffmpeg -y -i C:/seq_v001.%04d.exr -c:v libx264 -preset slow -crf 17 C:/out.mov

    Here is the console output :

    ffmpeg version N-47062-g26c531c Copyright (c) 2000-2012 the FFmpeg developers
    
  built on Nov 25 2012 12:25:21 with gcc 4.7.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    
  libavutil      52.  9.100 / 52.  9.100
    
  libavcodec     54. 77.100 / 54. 77.100
    
  libavformat    54. 37.100 / 54. 37.100
    
  libavdevice    54.  3.100 / 54.  3.100
    
  libavfilter     3. 23.102 /  3. 23.102
    
  libswscale      2.  1.102 /  2.  1.102
    
  libswresample   0. 17.101 /  0. 17.101
    
  libpostproc    52.  2.100 / 52.  2.100
    
[image2 @ 000000000025e4c0] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Input #0, image2, from 'C:/seq_v001.%04d.exr':
    
  Duration: 00:00:04.00, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: exr, rgb48le, 1920x1080 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
    
[libx264 @ 0000000001fd0ea0] using SAR=1/1
    
[libx264 @ 0000000001fd0ea0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
    
[libx264 @ 0000000001fd0ea0] profile High 4:4:4 Predictive, level 5.0, 4:4:4 8-bit
    
[libx264 @ 0000000001fd0ea0] 264 - core 128 r2216 198a7ea - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=4 threads=18 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=crf mbtree=1 crf=17.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mov, to 'C:/out.mov':
    
  Metadata:
    
    encoder         : Lavf54.37.100
    
    Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv444p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 12800 tbn, 25 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (exr -> libx264)
    
Press [q] to stop, [?] for help
    
[exr @ 0000000001fddea0] Found more than one compression attribute
    
[exr @ 0000000001fdda40] Found more than one compression attribute
    
[exr @ 0000000001fde2e0] Found more than one compression attribute
    
[exr @ 0000000001fde740] Found more than one compression attribute
    
[exr @ 0000000001fdeb80] Found more than one compression attribute
    
[exr @ 0000000001fdefe0] Found more than one compression attribute
    
frame=    7 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fdf880] Found more than one compression attribute
    
[exr @ 0000000001fdfcc0] Found more than one compression attribute
    
[exr @ 0000000001fe0120] Found more than one compression attribute
    
[exr @ 0000000001fe0560] Found more than one compression attribute
    
[exr @ 0000000001fe09c0] Found more than one compression attribute
    
[exr @ 0000000001fe0e00] Found more than one compression attribute
    
[exr @ 0000000001fddea0] Found more than one compression attribute
    
[exr @ 0000000001fdda40] Found more than one compression attribute
    
[exr @ 0000000001fde2e0] Found more than one compression attribute
    
frame=   17 fps= 16 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fdeb80] Found more than one compression attribute
    
[exr @ 0000000001fdefe0] Found more than one compression attribute
    
[exr @ 0000000001fdf420] Found more than one compression attribute
    
[exr @ 0000000001fdf880] Found more than one compression attribute
    
[exr @ 0000000001fdfcc0] Found more than one compression attribute
    
[exr @ 0000000001fe0120] Found more than one compression attribute
    
[exr @ 0000000001fe0560] Found more than one compression attribute
    
[exr @ 0000000001fe09c0] Found more than one compression attribute
    
[exr @ 0000000001fe0e00] Found more than one compression attribute
    
[exr @ 0000000001fddea0] Found more than one compression attribute
    
frame=   28 fps= 18 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fde2e0] Found more than one compression attribute
    
[exr @ 0000000001fde740] Found more than one compression attribute
    
[exr @ 0000000001fdeb80] Found more than one compression attribute
    
[exr @ 0000000001fdefe0] Found more than one compression attribute
    
[exr @ 0000000001fdf420] Found more than one compression attribute
    
[exr @ 0000000001fdf880] Found more than one compression attribute
    
[exr @ 0000000001fdfcc0] Found more than one compression attribute
    
[exr @ 0000000001fe0120] Found more than one compression attribute
    
[exr @ 0000000001fe0560] Found more than one compression attribute
    
[exr @ 0000000001fe09c0] Found more than one compression attribute
    
frame=   39 fps= 19 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fddea0] Found more than one compression attribute
    
[exr @ 0000000001fdda40] Found more than one compression attribute
    
[exr @ 0000000001fde2e0] Found more than one compression attribute
    
[exr @ 0000000001fde740] Found more than one compression attribute
    
[exr @ 0000000001fdeb80] Found more than one compression attribute
    
[exr @ 0000000001fdefe0] Found more than one compression attribute
    
[exr @ 0000000001fdf420] Found more than one compression attribute
    
[exr @ 0000000001fdf880] Found more than one compression attribute
    
[exr @ 0000000001fdfcc0] Found more than one compression attribute
    
[exr @ 0000000001fe0120] Found more than one compression attribute
    
frame=   50 fps= 19 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fe09c0] Found more than one compression attribute
    
[exr @ 0000000001fe0e00] Found more than one compression attribute
    
[exr @ 0000000001fddea0] Found more than one compression attribute
    
[exr @ 0000000001fdda40] Found more than one compression attribute
    
[exr @ 0000000001fde2e0] Found more than one compression attribute
    
[exr @ 0000000001fde740] Found more than one compression attribute
    
frame=   57 fps= 16 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fdefe0] Found more than one compression attribute
    
[exr @ 0000000001fdf420] Found more than one compression attribute
    
[exr @ 0000000001fdf880] Found more than one compression attribute
    
[exr @ 0000000001fdfcc0] Found more than one compression attribute
    
[exr @ 0000000001fe0120] Found more than one compression attribute
    
[exr @ 0000000001fe0560] Found more than one compression attribute
    
[exr @ 0000000001fe09c0] Found more than one compression attribute
    
[exr @ 0000000001fe0e00] Found more than one compression attribute
    
frame=   66 fps= 17 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fdda40] Found more than one compression attribute
    
[exr @ 0000000001fde2e0] Found more than one compression attribute
    
[exr @ 0000000001fde740] Found more than one compression attribute
    
[exr @ 0000000001fdeb80] Found more than one compression attribute
    
[exr @ 0000000001fdefe0] Found more than one compression attribute
    
[exr @ 0000000001fdf420] Found more than one compression attribute
    
[exr @ 0000000001fdf880] Found more than one compression attribute
    
frame=   74 fps= 16 q=22.0 size=     255kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fe0120] Found more than one compression attribute
    
[exr @ 0000000001fe0560] Found more than one compression attribute
    
[exr @ 0000000001fe09c0] Found more than one compression attribute
    
[exr @ 0000000001fe0e00] Found more than one compression attribute
    
frame=   79 fps= 16 q=22.0 size=     467kB time=00:00:00.20 bitrate=19134.5kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fdda40] Found more than one compression attribute
    
[exr @ 0000000001fde2e0] Found more than one compression attribute
    
[exr @ 0000000001fde740] Found more than one compression attribute
    
frame=   83 fps= 15 q=22.0 size=     652kB time=00:00:00.36 bitrate=14829.5kbits/s    
    
Found more than one compression attribute
    
[exr @ 0000000001fdefe0] Found more than one compression attribute
    
[exr @ 0000000001fdf420] Found more than one compression attribute
    
[exr @ 0000000001fdf880] Found more than one compression attribute
    
[exr @ 0000000001fdfcc0] Found more than one compression attribute
    
frame=  100 fps= 15 q=22.0 size=    1505kB time=-577014:-32:-22.-77 bitrate=  -0.0kbits/s    
    
frame=  100 fps=9.6 q=-1.0 Lsize=    3831kB time=00:00:03.92 bitrate=8006.7kbits/s    
    

    
video:3829kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.050698%
    
[libx264 @ 0000000001fd0ea0] frame I:1     Avg QP:18.35  size:168478
    
[libx264 @ 0000000001fd0ea0] frame P:31    Avg QP:16.10  size: 83540
    
[libx264 @ 0000000001fd0ea0] frame B:68    Avg QP:20.34  size: 17093
    
[libx264 @ 0000000001fd0ea0] consecutive B-frames:  7.0%  4.0%  9.0% 80.0%
    
[libx264 @ 0000000001fd0ea0] mb I  I16..4: 22.6% 67.9%  9.4%
    
[libx264 @ 0000000001fd0ea0] mb P  I16..4:  1.3%  7.3%  0.6%  P16..4: 20.3% 10.1%  5.7%  0.0%  0.0%    skip:54.6%
    
[libx264 @ 0000000001fd0ea0] mb B  I16..4:  0.2%  0.8%  0.1%  B16..8: 30.8%  4.8%  1.2%  direct: 1.5%  skip:60.6%  L0:46.0% L1:48.6% BI: 5.4%
    
[libx264 @ 0000000001fd0ea0] 8x8 transform intra:76.0% inter:78.8%
    
[libx264 @ 0000000001fd0ea0] direct mvs  spatial:85.3% temporal:14.7%
    
[libx264 @ 0000000001fd0ea0] coded y,u,v intra: 87.8% 56.3% 53.3% inter: 13.0% 6.1% 5.0%
    
[libx264 @ 0000000001fd0ea0] i16 v,h,dc,p: 12%  9% 24% 55%
    
[libx264 @ 0000000001fd0ea0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10%  8% 32%  7% 11%  8%  9%  7%  9%
    
[libx264 @ 0000000001fd0ea0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12%  8%  5%  8% 23% 14% 11%  9% 11%
    
[libx264 @ 0000000001fd0ea0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0000000001fd0ea0] ref P L0: 40.6%  9.5% 25.3% 13.3%  9.3%  2.1%
    
[libx264 @ 0000000001fd0ea0] ref B L0: 64.9% 24.5%  8.7%  1.9%
    
[libx264 @ 0000000001fd0ea0] ref B L1: 89.8% 10.2%
    
[libx264 @ 0000000001fd0ea0] kb/s:7841.10

  • ffmpeg mp3 conversion failed [closed]

    14 novembre 2012, par user444757

    using ffmpeg to convert from flv to mp3 gives the following result


    
] ffmpeg-0.6.1 >> ffmpeg -i name.flv name.mp3
FFmpeg version 0.6.1, Copyright (c) 2000-2010 the FFmpeg developers
built on Feb 14 2011 12:33:38 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration :
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0.11. 0 / 0.11. 0
[flv @ 0x10869420]Could not find codec parameters (Video : 0x0000)
[flv @ 0x10869420]Estimating duration from bitrate, this may be inaccurate
Input #0, flv, from 'name.flv' :
Metadata :
audiocodecid : 5
duration : 10
videocodecid : -1
canSeekToEnd : true
Duration : 00:00:10.17, start : 0.000000, bitrate : N/A
Stream #0.0 : Video : 0x0000, 1k tbr, 1k tbn, 1k tbc
Stream #0.1 : Audio : nellymoser, 8000 Hz, mono, s16
Output #0, mp3, to 'name.mp3' :
Stream #0.0 : Audio : 0x0000, 8000 Hz, mono, s16, 64 kb/s
Stream mapping :
Stream #0.1 -> #0.0
Encoder (codec id 86017) not found for output stream #0.0

    you can see in last line it says codec id 86017 not found.
    when i run following command :

    ffmpeg -formats > ffmpeg-format.txt


    mp3 is listed in available formats as
    DE mp3 MPEG audio layer 3
    .What can be the error.is it that mp3 codec is not properly installed ?Help will be appreciated

  • Revisiting Nosefart and Discovering GME

    30 mai 2011, par Multimedia Mike — Game Hacking

    I found the following screenshot buried deep in an old directory structure of mine :



    I tried to recall how this screenshot came to exist. Had I actually created a functional KDE frontend to Nosefart yet neglected to release it ? I think it’s more likely that I used some designer tool (possibly KDevelop) to prototype a frontend. This would have been sometime in 2000.

    However, this screenshot prompted me to revisit Nosefart.

    Nosefart Background
    Nosefart is a program that can play Nintendo Sound Format (NSF) files. NSF files are files containing components that were surgically separated from Nintendo Entertainment System (NES) ROM dumps. These components contain the music playback engines for various games. An NSF player is a stripped down emulation system that can simulate the NES6502 CPU along with the custom hardware (2 square waves, 1 triangle wave, 1 noise generator, and 1 limited digital channel).

    Nosefart was written by Matt Conte and eventually imported into a Sourceforge project, though it has not seen any development since then. The distribution contains standalone command line players for Linux and DOS, a GTK frontend for the Linux command line version, and plugins for Winamp, XMMS, and CL-Amp.

    The Sourceforge project page notes that Nosefart is also part of XBMC. Let the record show that Nosefart is also incorporated into xine (I did that in 2002, I think).

    Upgrading the API
    When I tried running the command line version of Nosefart under Linux, I hit hard against the legacy audio API : OSS. Remember that ?

    In fairly short order, I was able to upgrade the CL program to use PulseAudio. The program is not especially sophisticated. It’s a single-threaded affair which checks for a keypress, processes an audio frame, and sends the frame out to the OSS file interface. All that was needed was to rewrite open_hardware() and close_hardware() for PA and then replace the write statement in play(). The only quirk that stood out is that including <pulse/pulseaudio.h> is insufficient for programming PA’s simple API. <pulse/simple.h> must be included separately.

    For extra credit, I adapted the program to ALSA. The program uses the most simplistic audio output API possible — just keep filling a buffer and sending it out to the DAC.

    Discovering GME
    I’m not sure what to do with the the program now since, during my research to attempt to bring Nosefart up to date, I became aware of a software library named Game Music Emu, or GME. It’s a pure C++ library that can essentially play any classic video game format you can possible name. Wow. A lot can happen in 10 years when you’re not paying attention.

    It’s such a well-written library that I didn’t need any tutorial or documentation to come up to speed. Just a quick read of the main gme.h header library enabled me in short order to whip up a quick C program that could play NSF and SPC files. Path of least resistance : Client program asks library to open a hardcoded file, synthesize 10 seconds of audio, and dump it into a file ; ask the FLAC command line program to transcode raw data to .flac file ; use ffplay to verify the results.

    I might develop some other uses for this library.

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