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  • Liste des distributions compatibles

    26 avril 2011, par

    Le tableau ci-dessous correspond à la liste des distributions Linux compatible avec le script d’installation automatique de MediaSPIP. Nom de la distributionNom de la versionNuméro de version 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
    Si vous souhaitez nous aider à améliorer cette liste, vous pouvez nous fournir un accès à une machine dont la distribution n’est pas citée ci-dessus ou nous envoyer le (...)

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (4368)

  • wrong play audio samples

    8 août 2014, par Ivan Lisovich

    I have a problem with a ffmpeg and NAudio libs.
    I worked with the old ffmpeg library and there the audio plays correctly.
    read video in manage c++

    // Read frames and save to list audio frames
    
while(av_read_frame(pFormatCtx, &packet) >= 0) 
    
{
    
    if(packet.stream_index == videoStream) 
    
    {
    
        // reade image
    
    }
    
    else if(packet.stream_index == audioStream) 
    
    {
    
        int b = av_dup_packet(&packet);
    
        if(b >= 0) {
    
            int audio_pkt_size = packet.size;
    
            libffmpeg::uint8_t* audio_pkt_data = packet.data;
    
            while(audio_pkt_size > 0) 
    
            {
    
                int got_frame = 0;
    
                int len1 = libffmpeg::avcodec_decode_audio4(aCodecCtx, &frame, &got_frame, &packet);
    
                if(len1 < 0)
    
                {
    
                    /* if error, skip frame */
    
                    audio_pkt_size = 0;
    
                    break;
    
                }
    
                audio_pkt_data += len1;
    
                audio_pkt_size -= len1;
    
                if (got_frame)
    
                {
    
                    int data_size = libffmpeg::av_samples_get_buffer_size ( NULL, aCodecCtx->channels, frame.nb_samples, aCodecCtx->sample_fmt, 1 );
    
                    array<byte>^ managedBuf = gcnew array<byte>(data_size);
    
                    System::IntPtr iptr = System::IntPtr( frame.data[0] );
    
                    System::Runtime::InteropServices::Marshal::Copy( iptr, managedBuf, 0, data_size );
    
                    audioData->Add(managedBuf);
    
                }
    
            }
    
        }
    
    }
    
    // Free the packet that was allocated by av_read_frame
    
    libffmpeg::av_free_packet(&amp;packet);
    
}
    
</byte></byte>

    I return audioData to c# code and play in NAudio library
    play in c#

    var recordingFormat = new WaveFormat(reader.SampleRate, 16, reader.Channels);
    
var waveProvider = new BufferedWaveProvider(recordingFormat) { DiscardOnBufferOverflow = true, BufferDuration = TimeSpan.FromMilliseconds(10000) };
    
var waveOut = new DirectSoundOut();
    
waveOut.Init(waveProvider);
    
waveOut.Play();
    
foreach (byte[] data in audioData)
    
{
    
    waveProvider.AddSamples(data, 0, data.Length);
    
}

    but audio not playing.
    what am I doing wrong ?

  • FFMPEG conversion error from MKV to MP4 using libfdk_aac codec

    23 août 2014, par Charlie Brown

    The purpose of doing this is because my "Smart" samsung TV doesn’t play MKV files.

    This thread mentions that there is no need for video conversion, just changing the container might suffice. After reading multiple threads on how to change the container of MKV to MP4, I downloaded and compiled the FFMPEG with libfdk_aac support from here. I tried converting a sample MKV file using this command :

    ffmpeg -i "C:\VideoTest\Sample1.mkv" -c:v copy -c:a libfdk_aac -b:a 384k "C:\VideoTest\Sample2.mp4"

    but getting the following errors (copied from command prompt) :

    [hevc @ 0000000000308ae0] Could not find ref with POC 113
    
[hevc @ 0000000000308ae0] Could not find ref with POC 111
    
[hevc @ 0000000000308ae0] Could not find ref with POC 109
    
[hevc @ 0000000000308ae0] Could not find ref with POC 107
    
Input #0, matroska,webm, from 'C:\VideoTest\Sample-1.mk
    
v':
    
  Metadata:
    
    encoder         : libebml v1.3.0 + libmatroska v1.4.1
    
    creation_time   : 2014-07-16 08:54:02
    
  Duration: 00:00:58.68, start: 0.042000, bitrate: 3520 kb/s
    
    Chapter #0.0: start 0.000000, end 58.717000
    
    Metadata:
    
      title           : Chapter 4
    
    Stream #0:0: Video: hevc (Main), yuv420p(tv), 1920x816, SAR 1:1 DAR 40:17, 2
    
4 fps, 24 tbr, 1k tbn, 1k tbc (default)
    
    Metadata:
    
      _STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
    
 Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
    
t on Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      BPS             : 2733260
    
      BPS-eng         : 2733260
    
      DURATION        : 00:00:58.667000000
    
      DURATION-eng    : 00:00:58.667000000
    
      NUMBER_OF_FRAMES: 1408
    
      NUMBER_OF_FRAMES-eng: 1408
    
      NUMBER_OF_BYTES : 20044023
    
      NUMBER_OF_BYTES-eng: 20044023
    
    Stream #0:1: Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 768 kb/s (default)
    

    
    Metadata:
    
      _STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
    
 Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
    
t on Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      BPS             : 767986
    
      BPS-eng         : 767986
    
      DURATION        : 00:00:58.625000000
    
      DURATION-eng    : 00:00:58.625000000
    
      NUMBER_OF_FRAMES: 5496
    
      NUMBER_OF_FRAMES-eng: 5496
    
      NUMBER_OF_BYTES : 5627904
    
      NUMBER_OF_BYTES-eng: 5627904
    
    Stream #0:2(eng): Subtitle: hdmv_pgs_subtitle, 1920x1080 (default)
    
    Metadata:
    
      _STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
    
 Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
    
t on Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      BPS             : 17485
    
      BPS-eng         : 17485
    
      DURATION        : 00:00:56.750000000
    
      DURATION-eng    : 00:00:56.750000000
    
      NUMBER_OF_FRAMES: 40
    
      NUMBER_OF_FRAMES-eng: 40
    
      NUMBER_OF_BYTES : 124036
    
      NUMBER_OF_BYTES-eng: 124036
    
Output #0, mp4, to 'C:\VideoTest\Sample.mp4':
    
  Metadata:
    
    encoder         : Lavf56.1.100
    
    Chapter #0.0: start 0.000000, end 58.675000
    
    Metadata:
    
      title           : Chapter 4
    
    Stream #0:0: Video: hevc ([35][0][0][0] / 0x0023), yuv420p, 1920x816 [SAR 1:
    
1 DAR 40:17], q=2-31, 24 fps, 16k tbn, 1k tbc (default)
    
    Metadata:
    
      _STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
    
 Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
    
t on Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      BPS             : 2733260
    
      BPS-eng         : 2733260
    
      DURATION        : 00:00:58.667000000
    
      DURATION-eng    : 00:00:58.667000000
    
      NUMBER_OF_FRAMES: 1408
    
      NUMBER_OF_FRAMES-eng: 1408
    
      NUMBER_OF_BYTES : 20044023
    
      NUMBER_OF_BYTES-eng: 20044023
    
    Stream #0:1: Audio: aac (libfdk_aac) ([64][0][0][0] / 0x0040), 48000 Hz, 5.1
    
, s16, 128 kb/s (default)
    
    Metadata:
    
      _STATISTICS_WRITING_APP: mkvmerge v7.0.0 ('Where We Going') 64bit built on
    
 Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v7.0.0 ('Where We Going') 64bit buil
    
t on Jun  9 2014 15:16:27
    
      _STATISTICS_WRITING_DATE_UTC: 2014-07-16 08:54:02
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2014-07-16 08:54:02
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      BPS             : 767986
    
      BPS-eng         : 767986
    
      DURATION        : 00:00:58.625000000
    
      DURATION-eng    : 00:00:58.625000000
    
      NUMBER_OF_FRAMES: 5496
    
      NUMBER_OF_FRAMES-eng: 5496
    
      NUMBER_OF_BYTES : 5627904
    
      NUMBER_OF_BYTES-eng: 5627904
    
      encoder         : Lavc56.0.101 libfdk_aac
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (dts (dca) -> aac (libfdk_aac))
    
Press [q] to stop, [?] for help
    
[mp4 @ 0000000003be0500] Invalid DTS: 656 PTS: -672 in output stream 0:0
    
av_interleaved_write_frame(): Invalid argument
    
[libfdk_aac @ 00000000042fa640] Trying to remove 1024 samples, but the queue is
    
empty
    
[mp4 @ 0000000003be0500] Encoder did not produce proper pts, making some up.
    
[libfdk_aac @ 00000000042fa640] Trying to remove 1024 samples, but the queue is
    
empty
    
frame=    2 fps=0.0 q=-1.0 Lsize=      96kB time=00:00:00.04 bitrate=18415.0kbit
    
s/s
    
video:95kB audio:1kB subtitle:0kB other streams:0kB global headers:0kB muxing ov
    
erhead: 0.570364%
    
Conversion failed!

    Also tried using this command :

    ffmpeg -i input.wav -c:a libfdk_aac -b:a 128k output.mp4

    But this screws up the video quality and I start seeing some bad pixelated patches during the playback.

    Any help would be appreciated.

    Just an FYI : I got this far by reading blogs and posts. I have 0 knowledge about video conversion.

  • C# console app to process FFMPEG jpg stream output

    15 septembre 2014, par Gabriel Barzola

    I am looking some tip or idea in order to process an stream of jpg files created by a fFMPEG command.

    There is a way to split the outpuStream to capture each jpg file ?

    Here is the command
    ffmpeg -i rtsp ://somertsp:554 -an -f image2pipe -vf fps=fps=5 -

    I execute that command using a C# application.

    Here is a example code

    class Program
    
{
    
    private static BackgroundWorker worker;
    
    private static MemoryStream buffer = new MemoryStream();
    
    private static BinaryWriter bufferWriter = new BinaryWriter(buffer);
    

    
    static void Main(string[] args)
    
    {
    
        string file = @"C:\ffmpeg\bin\ffmpeg.exe";
    
        string arguments = @"-i rtsp://xxx:yyy@v5demo.wavestore.com:554/rtsp/00004 -an -f image2pipe -vf fps=fps=5 -qscale 0 -";
    

    
        var processStartInfo = new ProcessStartInfo(file, arguments);
    
        processStartInfo.CreateNoWindow = false;
    
        processStartInfo.RedirectStandardError = true;
    
        processStartInfo.RedirectStandardOutput = true;
    
        processStartInfo.UseShellExecute = false;
    

    
        worker = new BackgroundWorker();
    
        worker.DoWork += worker_DoWork;
    
        worker.WorkerReportsProgress = true;
    
        worker.ProgressChanged += worker_ProgressChanged;
    

    
        var process = new Process();
    
        process.StartInfo = processStartInfo;
    
        process.Start();
    

    
        worker.RunWorkerAsync(process);
    
        process.WaitForExit();
    

    
    }
    

    
    static void worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
    
    {
    
        // save the image
    
    }
    

    
    static void worker_DoWork(object sender, DoWorkEventArgs e)
    
    {
    
        try
    
        {
    

    
            var internalWorker = sender as BackgroundWorker;
    
            Process p = e.Argument as Process;
    
            buffer = new MemoryStream();
    
            bufferWriter = new BinaryWriter(buffer);
    
            using (var reader = new BinaryReader(p.StandardOutput.BaseStream))
    
            {
    
                while (true)
    
                {
    
                   //get the jpg image
    
                }
    
            }
    

    
        }
    
        catch (Exception ex)
    
        {
    
          // Log the error, continue processing the live stream
    
        }
    
    }        
    
}

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