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  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
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Sur d’autres sites (3319)

  • Re-sampling H264 video to reduce frame rate while maintaining high image quality

    31 mars 2016, par BrianTheLion

    Here’s the mplayer output for a video of interest :

    br@carina:/tmp$ mplayer foo.mov 
    
mplayer: Symbol `ff_codec_bmp_tags' has different size in shared object, consider re-linking
    
MPlayer 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team
    
mplayer: could not connect to socket
    
mplayer: No such file or directory
    
Failed to open LIRC support. You will not be able to use your remote control.
    

    
Playing foo.mov.
    
libavformat file format detected.
    
[lavf] stream 0: video (h264), -vid 0
    
[lavf] stream 1: audio (aac), -aid 0, -alang eng
    
VIDEO:  [H264]  1280x720  24bpp  59.940 fps  2494.2 kbps (304.5 kbyte/s)
    
==========================================================================
    
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
    
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
    
==========================================================================
    
==========================================================================
    
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
    
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 15999->176400)
    
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
    
==========================================================================
    
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
    
Starting playback...
    
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
    
VO: [vdpau] 1280x720 => 1280x720 Planar YV12

    I’d like to use ffmpeg, mencoder, or some other command-line video transcoder to re-sample this video to a lower framerate without loss of image quality. That is, each frame should remain as crisp as possible.

    Attempts

    ffmpeg -i foo.mov -r 25 -vcodec copy bar.mov
    • The target frame rate — 25fps — is achieved but individual frames are "blocky."
    mencoder -nosound -ovc copy foo.mov -ofps 25 -o bar.mov
    • Videos are effectively un-viewable.

    Help !

    This seems like a simple enough use case. I’m very surprised that obvious things are not working. Is there something wrong with my approach ?

  • Trying to redirect binary stdout of ffmpeg to NeroAacEnc stdin

    2 mai 2017, par Ben

    I am trying to write a program in C# 2010 that converts mp3 files to an audio book in m4a format via ffmpeg.exe and NeroAACenc.exe.
    For doing so I redirect stdout of ffmpeg to stdin of the Nero encoder within my application using the build in Diagnostics.Process class.

    Everything seems to work as expected but for some reason StandardOutput.BaseStream
    of ffmpeg stops receiving data at some time. The process does not exit and the ErrorDataReceived event is also not getting raised.
    The produced output m4a file has always a length of 2 minutes. The same applies if I just encode the mp3 file to a temp wav file without feeding Nero.

    I tried the same via the command line and this works without any problem.

    ffmpeg -i test.mp3 -f wav - | neroAacEnc -ignorelength -if - -of test.m4a

    Can anyone please tell me what I am doing wrong here ?
    Thanks in advance.

    class Encoder
    
{
    
    private byte[] ReadBuffer = new byte[4096];
    
    private Process ffMpegDecoder = new Process();
    
    private Process NeroEncoder = new Process();
    
    private BinaryWriter NeroInput;
    

    
    //Create WAV temp file for testing
    
    private Stream s = new FileStream("D:\\test\\test.wav", FileMode.Create);
    
    private BinaryWriter outfile;
    

    
    public void Encode()
    
    {
    
        ProcessStartInfo ffMpegPSI = new ProcessStartInfo("ffmpeg.exe", "-i D:\\test\\test.mp3 -f wav -");
    
        ffMpegPSI.UseShellExecute = false;
    
        ffMpegPSI.CreateNoWindow = true;
    
        ffMpegPSI.RedirectStandardOutput = true;
    
        ffMpegPSI.RedirectStandardError = true;
    
        ffMpegDecoder.StartInfo = ffMpegPSI;
    

    
        ProcessStartInfo NeroPSI = new ProcessStartInfo("neroAacEnc.exe", "-if - -ignorelength -of D:\\test\\test.m4a");
    
        NeroPSI.UseShellExecute = false;
    
        NeroPSI.CreateNoWindow = true;
    
        NeroPSI.RedirectStandardInput = true;
    
        NeroPSI.RedirectStandardError = true;
    
        NeroEncoder.StartInfo = NeroPSI;
    

    
        ffMpegDecoder.Exited += new EventHandler(ffMpegDecoder_Exited);
    
        ffMpegDecoder.ErrorDataReceived += new DataReceivedEventHandler(ffMpegDecoder_ErrorDataReceived);
    
        ffMpegDecoder.Start();
    

    
        NeroEncoder.Start();
    
        NeroInput = new BinaryWriter(NeroEncoder.StandardInput.BaseStream);
    

    
        outfile = new BinaryWriter(s);
    

    
        ffMpegDecoder.StandardOutput.BaseStream.BeginRead(ReadBuffer, 0, ReadBuffer.Length, new AsyncCallback(ReadCallBack), null);
    

    
    }
    

    
    private void ReadCallBack(IAsyncResult asyncResult)
    
    {
    
        int read = ffMpegDecoder.StandardOutput.BaseStream.EndRead(asyncResult);
    
        if (read > 0)
    
        {
    

    
            NeroInput.Write(ReadBuffer);
    
            NeroInput.Flush();
    

    
            outfile.Write(ReadBuffer);
    
            outfile.Flush();
    

    
            ffMpegDecoder.StandardOutput.BaseStream.Flush();
    

    
            ffMpegDecoder.StandardOutput.BaseStream.BeginRead(ReadBuffer, 0, ReadBuffer.Length, new AsyncCallback(ReadCallBack), null);
    
        }
    
        else
    
        {
    
            ffMpegDecoder.StandardOutput.BaseStream.Close();
    
            outfile.Close();
    
        }
    

    
    }
    

    
    private void ffMpegDecoder_Exited(object sender, System.EventArgs e)
    
    {
    
        Console.WriteLine("Exit");
    
    }
    

    
    private void ffMpegDecoder_ErrorDataReceived(object sender, DataReceivedEventArgs errLine)
    
    {
    
        Console.WriteLine("Error");
    
    }
    

    
}

  • ffmpeg "Header Missing" error recoding mp3 files

    26 juin 2012, par Jonathan Coe

    I have an mp3 encoding server running on Ubuntu (natty). This has been working perfectly up until maybe a week or two ago. I believe I ran an update, which seemed to break the encoder for me - every time I try to run the encode script, it fails out with the error "Header Missing". Files that encoded previously without any issues no longer encode.

    I am getting the following output when I run a basic ffmpeg script (that worked fine previously). Any ideas what is going on ?

    FFmpeg version 0.6.6-4:0.6.6-0ubuntu0.11.04.1, Copyright (c) 2000-2010 the Libav developers
    
  built on Jun 12 2012 16:28:21 with gcc 4.5.2
    
  configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
    
  WARNING: library configuration mismatch
    
  libavutil   configuration: --extra-version=4:0.6.6-1ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdirac --enable-libfaad --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavcodec  configuration: --extra-version=4:0.6.6-1ubuntu1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdirac --enable-libfaad --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavformat configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavdevice configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavfilter configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libswscale  configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libpostproc configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  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
    
  libavfilter    1.19. 0 /  1.19. 0
    
  libswscale     0.11. 0 /  0.11. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
[mp3 @ 0x8aafbc0]max_analyze_duration reached
    
Input #0, mp3, from '1340299085b3da8484f1b089d28460930d1467a749.mp3':
    
  Metadata:
    
    TLAN            : eng
    
    TRCK            : 8/11
    
    TPE1            : Big Wreck
    
    TALB            : Albatross
    
    TYER            : 2012
    
    TIT2            : Rest Of The World
    
    Rip date        : 2012-03-07
    
    TDAT            : 0603
    
    Source          : CD
    
    Release type    : Normal release
    
    TCON            : Rock
    
    TPUB            : Anthem Entertainment Group
    
  Duration: 00:02:51.38, start: 0.000000, bitrate: 320 kb/s
    
    Stream #0.0: Audio: mp3, 44100 Hz, 2 channels, s16, 320 kb/s
    
File 'test.mp3' already exists. Overwrite ? [y/N] y
    
Output #0, mp3, to 'test.mp3':
    
  Metadata:
    
    TSSE            : Lavf52.64.2
    
    Stream #0.0: Audio: libmp3lame, 44100 Hz, 2 channels, s16, 64 kb/s
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
[mp3 @ 0x8ab0db0]Header missingrate=  64.0kbits/s    
    
Error while decoding stream #0.0
    
size=    1339kB time=171.42 bitrate=  64.0kbits/s    
    
video:0kB audio:1339kB global headers:0kB muxing overhead 0.002406%

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