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Autres articles (112)

  • Ecrire une actualité

    21 juin 2013, par

    Présentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
    Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
    Vous pouvez personnaliser le formulaire de création d’une actualité.
    Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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 (...)

Sur d’autres sites (10307)

  • Audacity vocal removal failed when ffmpeg-conversion was involved

    10 mars 2018, par fyang

    I downloaded some songs coded with FLAC, and Audacity could remove the vocals quite well.

    When I downloaded songs coded with ALAC, I must use ffmpeg to convert them to some other forms because Audacity didn’t recognise .m4a files.

    I used the command ffmpeg -i "song 01.m4a" -f flac "song 01.flac". Now Audacity could load the song, but its vocal removal failed to remove the vocals.

    I tried again with this command in order to be precise, ffmpeg -i "song 01.m4a" -af "pan=stereo|c0=c0|c1=c1" -f flac "song 01.flac", and vocal removal did not work either.

    I tried to do it manually by splitting, inverting and changing both channels to mono, but the vocals were still there.

    I think the problem lies with the ffmpeg conversion step. Is there any fix ? Thanks !

    Below is the result of the conversion :

    ffmpeg -i "song 01.m4a" -af "pan=stereo|c0=c0|c1=c1" -f flac "song 01.flac"
    
ffmpeg version N-90143-gb6652f5100 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 7.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libmfx --enable-amf --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth
    
  libavutil      56.  7.101 / 56.  7.101
    
  libavcodec     58. 12.102 / 58. 12.102
    
  libavformat    58.  9.100 / 58.  9.100
    
  libavdevice    58.  2.100 / 58.  2.100
    
  libavfilter     7. 12.100 /  7. 12.100
    
  libswscale      5.  0.101 /  5.  0.101
    
  libswresample   3.  0.101 /  3.  0.101
    
  libpostproc    55.  0.100 / 55.  0.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000019f2b258000] stream 0, timescale not set
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'song 01.m4a':
    
  Metadata:
    
    major_brand     : M4A
    
    minor_version   : 0
    
    compatible_brands: M4A mp42isom
    
    creation_time   : 2009-12-27T00:15:23.000000Z
    
    track           : 1/10
    
    genre           : 
    
    album           : 
    
    artist          : 
    
    comment         : ExactAudioCopy v0.95b4
    
    DISCID          : 
    
    iTunNORM        :  00000F32 00000E1D 0000547D 00005B93 0006C3CA 0006C43E 00007FF8 00007FFF 00058227 0003593B
    
    title           : song 01
    
    encoder         : iTunes 9.0.2.25
    
    date            : 2005
    
    album_artist    : 
    
    lyrics          : 
    
  Duration: 00:08:10.84, start: 0.000000, bitrate: 921 kb/s
    
    Stream #0:0(und): Audio: alac (alac / 0x63616C61), 44100 Hz, stereo, s16p, 920 kb/s (default)
    
    Metadata:
    
      creation_time   : 2009-12-27T00:15:23.000000Z
    
    Stream #0:1: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 300x300 [SAR 100:100 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (alac (native) -> flac (native))
    
Press [q] to stop, [?] for help
    
[Parsed_pan_0 @ 0000019f2b2a6fc0] Pure channel mapping detected: 0 1
    
Output #0, flac, to 'song 01.flac':
    
  Metadata:
    
    major_brand     : M4A
    
    minor_version   : 0
    
    compatible_brands: M4A mp42isom
    
    lyrics          : 
    
    TRACKNUMBER     : 1/10
    
    genre           : 
    
    album           : 
    
    artist          : 
    
    DESCRIPTION     : ExactAudioCopy v0.95b4
    
    DISCID          : 
    
    iTunNORM        :  00000F32 00000E1D 0000547D 00005B93 0006C3CA 0006C43E 00007FF8 00007FFF 00058227 0003593B
    
    title           : song 01
    
    ALBUMARTIST     : 
    
    date            : 2005
    
    encoder         : Lavf58.9.100
    
    Stream #0:0(und): Audio: flac, 44100 Hz, stereo, s16, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 2009-12-27T00:15:23.000000Z
    
      encoder         : Lavc58.12.102 flac
    
size=   54518kB time=00:08:10.84 bitrate= 909.9kbits/s speed=  35x
    
video:0kB audio:54508kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.018294%

  • Non-monotonous DTS in output stream when concat videos using ffmpeg

    8 février 2018, par no name

    I have three videos which I want to concat together the problem it works fine for some videos but when I test a specific video it gives me an error and cause the resulting video to show in a strange way and everything is moving very fast in the video like I was forward up the video
    this the code I used to add the video together from a file this the out.txt

    file 'D:/Build/start.mp4'
    
file 'D:/Build/a.mp4'
    
file 'D:/Build/Song & Lyrics/2f.mp4'

    the command i used with ffmpeg

    ffmpeg -f concat -safe 0 -i out.txt -c copy -y go.mp4

    i faced this error

        [mov,mp4,m4a,3gp,3g2,mj2 @ 05c0dbc0] Auto-inserting h264_mp4toannexb bitstream filter
    
Input #0, concat, from 'out.txt':
    
  Duration: N/A, start: 0.000000, bitrate: 280 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 155 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Metadata:
    
      creation_time   : 2018-02-08T13:25:49.000000Z
    
      handler_name    : ISO Media file produced by Google Inc. Created on: 02/08/2018.
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s
    
    Metadata:
    
      creation_time   : 2018-02-08T13:25:49.000000Z
    
      handler_name    : ISO Media file produced by Google Inc. Created on: 02/08/2018.
    
Output #0, mp4, to 'go.mp4':
    
  Metadata:
    
    encoder         : Lavf58.7.100
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 155 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc
    
    Metadata:
    
      creation_time   : 2018-02-08T13:25:49.000000Z
    
      handler_name    : ISO Media file produced by Google Inc. Created on: 02/08/2018.
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s
    
    Metadata:
    
      creation_time   : 2018-02-08T13:25:49.000000Z
    
      handler_name    : ISO Media file produced by Google Inc. Created on: 02/08/2018.
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 05c38840] Auto-inserting h264_mp4toannexb bitstream filter
    
[mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624624, current: 88735; changing to 624625. This may result in incorrect timestamps in the output file.
    
[mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624625, current: 89247; changing to 624626. This may result in incorrect timestamps in the output file.
    
[mp4 @ 061b8f00] Non-monotonous DTS in output stream 0:0; previous: 624626, current: 89759; changing to 624627. This may result in incorrect timestamps in the output file.
    
.....
    

    
[mov,mp4,m4a,3gp,3g2,mj2 @ 05c38840] Auto-inserting h264_mp4toannexb   bitstream filtereed=69.7x
    
frame= 8991 fps=2903 q=-1.0 Lsize=    8378kB time=00:05:58.22 bitrate= 191.6kbits/s speed= 116x
    
video:2469kB audio:5625kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.500685%

    so what the problem make this error. the problem appear when i use this new start.mp4 to be merge with my videos i tried on other ones and it worked fine.
    Update
    i tested to convert the videos to MTS formate then concate them as an answer to similar problem but the problem is when i convert the mp4 videos to this formate the size of the file be too large from 6 MB to 42 MB !! so if there is a better answer. or a way to make the file still same size or less
    the linke of the answer is here but it worked fine
    Thanks in advance

  • qsv : Default PicStruct to progressive

    12 février 2018, par Ruiling Song
    qsv : Default PicStruct to progressive

    The PicStruct is required by MediaSDK, so give a default value.
    
hwupload does not work without this.
    

    Signed-off-by : Ruiling Song <ruiling.song@intel.com>
    
Signed-off-by : Luca Barbato <lu_zero@gentoo.org>
    • [DBH] libavutil/hwcontext_qsv.c

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