Recherche avancée

Médias (17)

Mot : - Tags -/wired

Autres articles (41)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • 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.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (7042)

  • Sound in videos is full of static

    13 avril 2015, par banshee_walk_sly

    I’m trying to play sound from an FFMpegFrameGrabber by getting the Frame and sending the audio samples to a SourceDataLine. Here’s what I have so far :

    Creating the SourceDataLine :

    int channels = _grabber.getAudioChannels();
    
int format = _grabber.getSampleFormat();
    
AudioFormat fmt = new AudioFormat(_grabber.getSampleRate(), format, channels, true, true);
    
_sourceDataLine=(SourceDataLine)AudioSystem.getLine(new DataLine.Info(SourceDataLine.class, fmt));
    
_sourceDataLine.open(fmt);
    
_sourceDataLine.start();

    Attempting to play sound (images are handled in the else block) :

    org.bytedeco.javacv.Frame f = _grabber.grabFrame();
    

    
if (f.samples != null && f.samples.length > 0)
    
{
    
    byte[] bytes = new byte[4096];
    
    for (Buffer buffer : f.samples)
    
    {
    
        FloatBuffer floatBuffer = (FloatBuffer) buffer;
    
        ByteBuffer byteBuffer = ByteBuffer.allocate(floatBuffer.capacity() * 4);
    
        byteBuffer.asFloatBuffer().put(floatBuffer);
    
        byteBuffer.rewind();
    
        byteBuffer.get(bytes);
    
        _sourceDataLine.write(bytes, 0, bytes.length);
    
    }
    
}

    (Note : I tried a few different versions of this and they all have static. The versions I tried included combining the buffers into one large buffer, only trying to play one sample instead of each channel, and changing the audio format to many different permutations.)

    The problem is the sound is full of static, and almost completely unintelligible. This is my first time doing any audio programming, so I’m sure I’m doing something completely ridiculous.

    I appreciate any help. Thank you.

    EDIT

    In response to Radiodef, I tried a number of AudioFormats, and I couldn’t find one that worked for PCM_FLOAT. I found an example that used this :

    fmt = new AudioFormat(AudioFormat.Encoding.PCM_FLOAT, _grabber.getSampleRate(), format, channels, channels, _grabber.getSampleRate(), true);

    Note : I tried a few different values for the framesize from examples : channels * format / 8, channels * 8 with a hardcoded samplerate of 64, channels * 4 with a hardcoded samplerate of 32, and any combinations of those

    But it give me this exception :

    java.lang.IllegalArgumentException: No line matching interface SourceDataLine supporting format PCM_FLOAT 44100.0 Hz, 8 bit, stereo, 2 bytes/frame,  is supported.
    
    at javax.sound.sampled.AudioSystem.getLine(Unknown Source)
    
    at com.enplug.player.video.Video.<init>(Video.java:52) &lt;- where I get the SourceDataLine
    
    ...
    
</init>

    EDIT 2

    Sorry for the delay. I appreciate all the help Radiodef.

    Here is some output from the FFMpegGrabber that is automatically output.

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Shawn\AppData\Roaming\Enplug Display\Download\Resource\c7cb496d-96ea-4be8-a238-5ffd50955a3e.mp4':
    
  Metadata:
    
    major_brand     : qt
    
    minor_version   : 0
    
    compatible_brands: qt
    
    creation_time   : 2014-10-02 07:14:38
    
  Duration: 00:00:31.13, start: 0.000000, bitrate: 2412 kb/s
    
    Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 246 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-10-02 07:14:38
    
      handler_name    : Core Media Data Handler
    
    Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 2157 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc (default)
    
    Metadata:
    
      creation_time   : 2014-10-02 07:14:38
    
      handler_name    : Core Media Data Handler
    
      encoder         : H.264

    I have two videos I’m testing with, and the first one (which is the one in the example above) has the following :

    Bit rate: 247 kbps
    
Channels: 2 (stereo)
    
Audio sample rate: 44 kHz

    And the second is :

    Bit rate: 161 kbps
    
Channels: 2 (stereo)
    
Audio sample rate: 48 kHz

    They’re both mp4s, and I can provide any details about the video itself if needed.

    As for the library, yeah I’m pretty locked into JavaCV. We already have videos running without sound, but we’re now trying to add sound to our program.

    When I run the sample program from your JSR link I get :

    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian

  • Sound in videos is full of static

    15 octobre 2017, par Shawn Blakesley

    I’m trying to play sound from an FFMpegFrameGrabber by getting the Frame and sending the audio samples to a SourceDataLine. Here’s what I have so far :

    Creating the SourceDataLine :

    int channels = _grabber.getAudioChannels();
    
int format = _grabber.getSampleFormat();
    
AudioFormat fmt = new AudioFormat(_grabber.getSampleRate(), format, channels, true, true);
    
_sourceDataLine=(SourceDataLine)AudioSystem.getLine(new DataLine.Info(SourceDataLine.class, fmt));
    
_sourceDataLine.open(fmt);
    
_sourceDataLine.start();

    Attempting to play sound (images are handled in the else block) :

    org.bytedeco.javacv.Frame f = _grabber.grabFrame();
    

    
if (f.samples != null &amp;&amp; f.samples.length > 0)
    
{
    
    byte[] bytes = new byte[4096];
    
    for (Buffer buffer : f.samples)
    
    {
    
        FloatBuffer floatBuffer = (FloatBuffer) buffer;
    
        ByteBuffer byteBuffer = ByteBuffer.allocate(floatBuffer.capacity() * 4);
    
        byteBuffer.asFloatBuffer().put(floatBuffer);
    
        byteBuffer.rewind();
    
        byteBuffer.get(bytes);
    
        _sourceDataLine.write(bytes, 0, bytes.length);
    
    }
    
}

    (Note : I tried a few different versions of this and they all have static. The versions I tried included combining the buffers into one large buffer, only trying to play one sample instead of each channel, and changing the audio format to many different permutations.)

    The problem is the sound is full of static, and almost completely unintelligible. This is my first time doing any audio programming, so I’m sure I’m doing something completely ridiculous.

    I appreciate any help. Thank you.

    EDIT

    In response to Radiodef, I tried a number of AudioFormats, and I couldn’t find one that worked for PCM_FLOAT. I found an example that used this :

    fmt = new AudioFormat(AudioFormat.Encoding.PCM_FLOAT, _grabber.getSampleRate(), format, channels, channels, _grabber.getSampleRate(), true);

    Note : I tried a few different values for the framesize from examples : channels * format / 8, channels * 8 with a hardcoded samplerate of 64, channels * 4 with a hardcoded samplerate of 32, and any combinations of those

    But it give me this exception :

    java.lang.IllegalArgumentException: No line matching interface SourceDataLine supporting format PCM_FLOAT 44100.0 Hz, 8 bit, stereo, 2 bytes/frame,  is supported.
    
    at javax.sound.sampled.AudioSystem.getLine(Unknown Source)
    
    at com.enplug.player.video.Video.<init>(Video.java:52) &lt;- where I get the SourceDataLine
    
    ...
    
</init>

    EDIT 2

    Sorry for the delay. I appreciate all the help Radiodef.

    Here is some output from the FFMpegGrabber that is automatically output.

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Shawn\AppData\Roaming\Enplug Display\Download\Resource\c7cb496d-96ea-4be8-a238-5ffd50955a3e.mp4':
    
  Metadata:
    
    major_brand     : qt
    
    minor_version   : 0
    
    compatible_brands: qt
    
    creation_time   : 2014-10-02 07:14:38
    
  Duration: 00:00:31.13, start: 0.000000, bitrate: 2412 kb/s
    
    Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 246 kb/s (default)
    
    Metadata:
    
      creation_time   : 2014-10-02 07:14:38
    
      handler_name    : Core Media Data Handler
    
    Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 2157 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc (default)
    
    Metadata:
    
      creation_time   : 2014-10-02 07:14:38
    
      handler_name    : Core Media Data Handler
    
      encoder         : H.264

    I have two videos I’m testing with, and the first one (which is the one in the example above) has the following :

    Bit rate: 247 kbps
    
Channels: 2 (stereo)
    
Audio sample rate: 44 kHz

    And the second is :

    Bit rate: 161 kbps
    
Channels: 2 (stereo)
    
Audio sample rate: 48 kHz

    They’re both mp4s, and I can provide any details about the video itself if needed.

    As for the library, yeah I’m pretty locked into JavaCV. We already have videos running without sound, but we’re now trying to add sound to our program.

    When I run the sample program from your JSR link I get :

    PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
    
PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
    
PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian

  • FFMPEG overlay video over image using movie filter resulting video with no sound

    22 février 2021, par Herahadi An

    I want to overlay srinked video on the top of single image.&#xA;I use movie filter to do that. like this

    &#xA;

    ffmpeg.exe -loop 1 -i Coronavirus00000000.jpg -vf "movie=C\\:/\Users/\Toshiba/\Pictures/\test vcp/\shopi pro.mp4,scale=1180:-1[inner];[in][inner]overlay=70:70:shortest=1[out]" -y out.mp4&#xA;

    &#xA;

    It's work. but the problem, the audio from video is removed. The final video out.mp4 has no sound, even though the original video has.

    &#xA;

    I have read answer on this threat FFMPEG overlaying video with image removes audio

    &#xA;

    That recommend to Change into ...[padded]overlay=0:0" -y ... Or add -map 0:a

    &#xA;

    But I don't understand how to implement that answer into movie filter

    &#xA;

Navigation