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  • Que fait exactement ce script ?

    18 janvier 2011, par

    Ce script est écrit en bash. Il est donc facilement utilisable sur n’importe quel serveur.
    Il n’est compatible qu’avec une liste de distributions précises (voir Liste des distributions compatibles).
    Installation de dépendances de MediaSPIP
    Son rôle principal est d’installer l’ensemble des dépendances logicielles nécessaires coté serveur à savoir :
    Les outils de base pour pouvoir installer le reste des dépendances Les outils de développements : build-essential (via APT depuis les dépôts officiels) ; (...)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

  • XMP PHP

    13 mai 2011, par

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
    Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
    XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)

Sur d’autres sites (2976)

  • Gstreamer AAC encoding no more supported ?

    22 juillet 2016, par Gianks

    i’d like to include AAC as one of the compatible formats in my app but i’m having troubles with its encoding.
    FAAC seems to be missing in GStreamer-1.0 Debian-derived packages (see Ubuntu) and the main reason for that (if i got it correctly) is the presence of avenc_aac (Lunchpad bugreport) as a replacement.

    I’ve tried the following :

    gst-launch-1.0 filesrc location="src.avi" ! tee name=t  t.! queue ! decodebin ! progressreport ! x264enc ! mux. t.! queue ! decodebin ! audioconvert ! audioresample ! avenc_aac compliance=-2 ! mux. avmux_mpegts name=mux ! filesink location=/tmp/test.avi

    It hangs prerolling with :

    ERROR libav :0:: AAC bitstream not in ADTS format and extradata missing

    Using mpegtsmux instead of avmux_mpegts seems to work since the file is created but it results with no working audio (with some players it’s completely unplayable).

    This is the trace of mplayer :

    Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
    
[aac @ 0x7f2860d6c3c0]channel element 3.15 is not allocated
    
[aac @ 0x7f2860d6c3c0]Sample rate index in program config element does not match the sample rate index configured by the container.
    
[aac @ 0x7f2860d6c3c0]Inconsistent channel configuration.
    
[aac @ 0x7f2860d6c3c0]get_buffer() failed
    
[aac @ 0x7f2860d6c3c0]Assuming an incorrectly encoded 7.1 channel layout instead of a spec-compliant 7.1(wide) layout, use -strict 1 to decode according to the specification instead.
    
[aac @ 0x7f2860d6c3c0]Reserved bit set.
    
[aac @ 0x7f2860d6c3c0]Number of bands (20) exceeds limit (14).
    
[aac @ 0x7f2860d6c3c0]invalid band type
    
[aac @ 0x7f2860d6c3c0]More than one AAC RDB per ADTS frame is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
    
[aac @ 0x7f2860d6c3c0]Reserved bit set.
    
[aac @ 0x7f2860d6c3c0]Number of bands (45) exceeds limit (28).
    
Unknown/missing audio format -> no sound
    
ADecoder init failed :(
    
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
    
FAAD: compressed input bitrate missing, assuming 128kbit/s!
    
AUDIO: 44100 Hz, 2 ch, floatle, 128.0 kbit/9.07% (ratio: 16000->176400)
    
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
    
==========================================================================
    
AO: [pulse] 44100Hz 2ch floatle (4 bytes per sample)
    
Starting playback...
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: error: Invalid number of channels, trying to resync!
    
FAAD: error: Invalid number of channels, trying to resync!
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: error: Invalid number of channels, trying to resync!
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: error: Channel coupling not yet implemented, trying to resync!
    
FAAD: error: Invalid number of channels, trying to resync!
    
FAAD: error: Invalid number of channels, trying to resync!
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: Failed to decode frame: Bitstream value not allowed by specification 
    
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
    
VO: [vdpau] 640x480 => 640x480 Planar YV12 
    
A:3602.2 V:3600.0 A-V:  2.143 ct:  0.000   3/  3 ??% ??% ??,?% 0 0 
    
FAAD: error: Array index out of range, trying to resync!
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: error: Unexpected fill element with SBR data, trying to resync!
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: error: Bitstream value not allowed by specification, trying to resync!
    
FAAD: error: Channel coupling not yet implemented, trying to resync!
    
FAAD: error: Invalid number of channels, trying to resync!
    
FAAD: error: PCE shall be the first element in a frame, trying to resync!
    
FAAD: error: Invalid number of channels, trying to resync!
    
FAAD: Failed to decode frame: Invalid number of channels 
    
A:3602.2 V:3600.1 A-V:  2.063 ct:  0.000   4/  4 ??% ??% ??,?% 0 0

    These the messages produced by VLC (10 seconds of playback) :

    ts info: MPEG-4 descriptor not found for pid 0x42 type 0xf
    
core error: option sub-original-fps does not exist
    
subtitle warning: failed to recognize subtitle type
    
core error: no suitable demux module for `file/subtitle:///tmp//test.avi.idx'
    
avcodec info: Using NVIDIA VDPAU Driver Shared Library 361.42 Tue Mar 22 17:29:16 PDT 2016 for hardware decoding.
    
core warning: VoutDisplayEvent 'pictures invalid'
    
core warning: VoutDisplayEvent 'pictures invalid'
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio warning: ADTS CRC not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: ADTS CRC not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio warning: Invalid ADTS header
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported
    
packetizer_mpeg4audio error: Multiple blocks per frame in ADTS not supported

    Using the error of the hanging pipeline I’ve finally discovered that avenc_aac should be told in such way to output the data NOT in RAW AAC but in ADTS AAC, the point is that i’ve no idea how to do that with Gstreamer. See here, bottom of the page : FFMPEG Ticket

    At this point since i’ve found no documentation seems right to say we have no support for AAC encoding in GStreamer... which isn’t true, i guess ! (IMHO anyway seems strange the missing of FAAC if AVENC_AAC requires all the time to be set in experimental mode)

    Can someone propose a working pipeline for this ?

    UPDATE

    After some more research i’ve found (via gst-inspect on avenc_aac) what i’m probably looking for but i don’t know how to setup it as needed.
    Have a look at stream-format :

    Pad Templates:
    
  SRC template: 'src'
    
    Availability: Always
    
    Capabilities:
    
      audio/mpeg
    
               channels: [ 1, 6 ]
    
                   rate: [ 4000, 96000 ]
    
            mpegversion: 4
    
          stream-format: raw
    
        base-profile: lc

    Thanks

  • ffmpeg audio conversion : encoder pcm_u8 working pcm_s8 not

    1er août 2016, par patszn

    I need to convert audio inside video to 8 Bit signed PCM. I try it like this :

    C:\Users\E\Desktop\ffmpeg-20160731-04da20e-win32-static\bin>ffmpeg -i minions.mp4 -vcodec mjpeg -s 800x480 -acodec pcm_s8 -ac 1 out.avi

    output :

    ffmpeg version N-81192-g04da20e Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.4.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib
    
ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree
    
type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
    
openjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
    
 --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
    
libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 28.100 / 55. 28.100
    
  libavcodec     57. 51.100 / 57. 51.100
    
  libavformat    57. 44.100 / 57. 44.100
    
  libavdevice    57.  0.102 / 57.  0.102
    
  libavfilter     6. 49.100 /  6. 49.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  1.100 /  2.  1.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'minions.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2016-03-17 10:06:57
    
  Duration: 00:03:18.72, start: 0.000000, bitrate: 1869 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1675 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default
    
)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
    
    Metadata:
    
      creation_time   : 2016-03-17 10:06:58
    
      handler_name    : IsoMedia File Produced by Google, 5-11-2011
    
[swscaler @ 04821880] deprecated pixel format used, make sure you did set range correctly
    
[avi @ 048c0460] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
    
    Last message repeated 1 times
    
Output #0, avi, to 'out.avi':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    encoder         : Lavf57.44.100
    
    Stream #0:0(und): Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 800x480 [SAR 16:15 DAR 16:9], q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.51.100 mjpeg
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: pcm_s8, 44100 Hz, mono, u8, 352 kb/s (default)
    
    Metadata:
    
      creation_time   : 2016-03-17 10:06:58
    
      handler_name    : IsoMedia File Produced by Google, 5-11-2011
    
      encoder         : Lavc57.51.100 pcm_s8
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
    
  Stream #0:1 -> #0:1 (aac (native) -> pcm_s8 (native))
    
Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted

    ffmpeg can not write a header for output file. I want to mention that if audio encoder is selected to pcm_u8 everything works fine.

    C:\Users\E\Desktop\ffmpeg-20160731-04da20e-win32-static\bin>ffmpeg -i minions.mp4 -vcodec mjpeg -s 800x480 -acodec pcm_u8 -ac 1 out.avi

    output :

    ffmpeg version N-81192-g04da20e Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.4.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib
    
ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree
    
type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
    
openjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
    
 --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
    
libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 28.100 / 55. 28.100
    
  libavcodec     57. 51.100 / 57. 51.100
    
  libavformat    57. 44.100 / 57. 44.100
    
  libavdevice    57.  0.102 / 57.  0.102
    
  libavfilter     6. 49.100 /  6. 49.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  1.100 /  2.  1.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'minions.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2016-03-17 10:06:57
    
  Duration: 00:03:18.72, start: 0.000000, bitrate: 1869 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1675 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default
    
)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
    
    Metadata:
    
      creation_time   : 2016-03-17 10:06:58
    
      handler_name    : IsoMedia File Produced by Google, 5-11-2011
    
File 'out.avi' already exists. Overwrite ? [y/N] y
    
[swscaler @ 030a1880] deprecated pixel format used, make sure you did set range correctly
    
[avi @ 04a10460] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
    
    Last message repeated 1 times
    
Output #0, avi, to 'out.avi':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    ISFT            : Lavf57.44.100
    
    Stream #0:0(und): Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 800x480 [SAR 16:15 DAR 16:9], q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.51.100 mjpeg
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: pcm_u8 ([1][0][0][0] / 0x0001), 44100 Hz, mono, u8, 352 kb/s (default)
    
    Metadata:
    
      creation_time   : 2016-03-17 10:06:58
    
      handler_name    : IsoMedia File Produced by Google, 5-11-2011
    
      encoder         : Lavc57.51.100 pcm_u8
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
    
  Stream #0:1 -> #0:1 (aac (native) -> pcm_u8 (native))
    
Press [q] to stop, [?] for help
    
frame= 4764 fps=250 q=24.8 Lsize=   74247kB time=00:03:18.71 bitrate=3060.8kbits/s speed=10.4x
    
video:65364kB audio:8558kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.438745%

    What is the problem ? Why conversion does not work for signed pcm ?

    Encoders for both unsigned and signed pcm are avaible :

    C:\Users\E\Desktop\ffmpeg-20160731-04da20e-win32-static\bin>ffmpeg -encoders

     .
    
 .
    
 A..... pcm_f32be            PCM 32-bit floating point big-endian
    
 A..... pcm_f32le            PCM 32-bit floating point little-endian
    
 A..... pcm_f64be            PCM 64-bit floating point big-endian
    
 A..... pcm_f64le            PCM 64-bit floating point little-endian
    
 A..... pcm_mulaw            PCM mu-law / G.711 mu-law
    
 A..... pcm_s16be            PCM signed 16-bit big-endian
    
 A..... pcm_s16be_planar     PCM signed 16-bit big-endian planar
    
 A..... pcm_s16le            PCM signed 16-bit little-endian
    
 A..... pcm_s16le_planar     PCM signed 16-bit little-endian planar
    
 A..... pcm_s24be            PCM signed 24-bit big-endian
    
 A..... pcm_s24daud          PCM D-Cinema audio signed 24-bit
    
 A..... pcm_s24le            PCM signed 24-bit little-endian
    
 A..... pcm_s24le_planar     PCM signed 24-bit little-endian planar
    
 A..... pcm_s32be            PCM signed 32-bit big-endian
    
 A..... pcm_s32le            PCM signed 32-bit little-endian
    
 A..... pcm_s32le_planar     PCM signed 32-bit little-endian planar
    
 A..... pcm_s8               PCM signed 8-bit
    
 A..... pcm_s8_planar        PCM signed 8-bit planar
    
 A..... pcm_u16be            PCM unsigned 16-bit big-endian
    
 A..... pcm_u16le            PCM unsigned 16-bit little-endian
    
 A..... pcm_u24be            PCM unsigned 24-bit big-endian
    
 A..... pcm_u24le            PCM unsigned 24-bit little-endian
    
 A..... pcm_u32be            PCM unsigned 32-bit big-endian
    
 A..... pcm_u32le            PCM unsigned 32-bit little-endian
    
 A..... pcm_u8               PCM unsigned 8-bit
    
 .
    
 .

  • ffplay : Fix invalid array index

    3 août 2016, par Michael Niedermayer
    ffplay : Fix invalid array index

    Found-by : Thomas Guilbert <tguilbert@google.com>
    
Fixes : clusterfuzz_usan-2016-08-02
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] ffplay.c

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