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  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
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    Administration > Configuration des masques de formulaire.
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    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
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    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • 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".
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Sur d’autres sites (5234)

  • How to list all audio devices that are enabled and present for recording the output audio of the pc ?

    23 juin 2023, par Daniel Lip

    I want to record with ffmpeg later the entire desktop including audio.
I want to make that it will find for me automatic the recording audio device.

    


    I'm using MMDeviceEnumerator.

    


    all the other ways I tried returned empty list returned 0 audio devices. I tried with naudio and ffmpeg

    


    public Form1()
        {
            InitializeComponent();

            InitializeRecordingIndicator();

            MMDeviceEnumerator enumerator = new MMDeviceEnumerator();
            foreach (MMDevice device in enumerator.EnumerateAudioEndPoints(DataFlow.Capture, DeviceState.All))
            {
                StreamWriter w = new StreamWriter(@"d:\audiodev.txt", true);
                cmbAudioDevices.Items.Add(device.FriendlyName);
                w.WriteLine(device.FriendlyName + " " + device.State);
                w.Close();
            }
        }


    


    This is the list of all my audio deviceso n my system.
but they are all not present or disabled. and i have audio on my pc i can hear games videos anything.

    


    so what would i select from this list as audio device for recording the pc output audio ?
or maybe i need to find another way to find the right audio device ?

    


    Front Green In (Realtek(R) Audio) NotPresent
Rear (Realtek(R) Audio) NotPresent
Center (Realtek(R) Audio) NotPresent
Microphone (Realtek(R) Audio) NotPresent
Rear Grey In (Realtek(R) Audio) NotPresent
Side (Realtek(R) Audio) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Rear Pink In (Realtek(R) Audio) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Front (Realtek(R) Audio) NotPresent
Rear Orange In (Realtek(R) Audio) NotPresent
Line In (Realtek(R) Audio) NotPresent
Front Pink In (Realtek(R) Audio) NotPresent
Line In (Realtek(R) Audio) Unplugged
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Microphone (Realtek(R) Audio) Unplugged
Subwoofer (Realtek(R) Audio) NotPresent
Rear Black In (Realtek(R) Audio) NotPresent
Stereo Mix (Realtek(R) Audio) Disabled
Rear Green In (Realtek(R) Audio) NotPresent
Microphone (Realtek(R) Audio) NotPresent
Rear Blue In (Realtek(R) Audio) NotPresent
Front Green In (Realtek(R) Audio) NotPresent
Rear (Realtek(R) Audio) NotPresent
Center (Realtek(R) Audio) NotPresent
Microphone (Realtek(R) Audio) NotPresent
Rear Grey In (Realtek(R) Audio) NotPresent
Side (Realtek(R) Audio) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Rear Pink In (Realtek(R) Audio) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Front (Realtek(R) Audio) NotPresent
Rear Orange In (Realtek(R) Audio) NotPresent
Line In (Realtek(R) Audio) NotPresent
Front Pink In (Realtek(R) Audio) NotPresent
Line In (Realtek(R) Audio) Unplugged
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Microphone (Realtek(R) Audio) Unplugged
Subwoofer (Realtek(R) Audio) NotPresent
Rear Black In (Realtek(R) Audio) NotPresent
Stereo Mix (Realtek(R) Audio) Disabled
Rear Green In (Realtek(R) Audio) NotPresent
Microphone (Realtek(R) Audio) NotPresent
Rear Blue In (Realtek(R) Audio) NotPresent
Front Green In (Realtek(R) Audio) NotPresent
Rear (Realtek(R) Audio) NotPresent
Center (Realtek(R) Audio) NotPresent
Microphone (Realtek(R) Audio) NotPresent
Rear Grey In (Realtek(R) Audio) NotPresent
Side (Realtek(R) Audio) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Rear Pink In (Realtek(R) Audio) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (NVIDIA High Definition Audio) NotPresent
Front (Realtek(R) Audio) NotPresent
Rear Orange In (Realtek(R) Audio) NotPresent
Line In (Realtek(R) Audio) NotPresent
Front Pink In (Realtek(R) Audio) NotPresent
Line In (Realtek(R) Audio) Unplugged
Internal AUX Jack (High Definition Audio Device) NotPresent
Internal AUX Jack (High Definition Audio Device) NotPresent
Microphone (Realtek(R) Audio) Unplugged
Subwoofer (Realtek(R) Audio) NotPresent
Rear Black In (Realtek(R) Audio) NotPresent
Stereo Mix (Realtek(R) Audio) Disabled
Rear Green In (Realtek(R) Audio) NotPresent
Microphone (Realtek(R) Audio) NotPresent
Rear Blue In (Realtek(R) Audio) NotPresent


    


    this is how i tried with naudio but it didn't working it didn't find anything. :

    


    using NAudio.Wave;
...

// Enumerate and list audio input devices
var devices = WaveInEvent.DeviceCount;
for (int deviceId = 0; deviceId < devices; deviceId++)
{
    var deviceInfo = WaveInEvent.GetCapabilities(deviceId);
    Console.WriteLine($"Device ID: {deviceId}, Name: {deviceInfo.ProductName}");
}


    


    before that i tried with ffmpeg but also it didn't return anything :

    


    public static class FFmpegHelper
    {
        public static string[] GetAudioCaptureDevices()
        {
            string ffmpegPath = @"C:\path\to\ffmpeg.exe";
            Process process = new Process();
            process.StartInfo.FileName = ffmpegPath;
            process.StartInfo.Arguments = "-list_devices true -f dshow -i dummy";
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.RedirectStandardError = true;
            process.StartInfo.CreateNoWindow = true;
            process.Start();
            process.WaitForExit();

            string output = process.StandardError.ReadToEnd();
            string[] lines = output.Split('\n');
            var devices = lines.Where(line => line.Contains("audio")).Select(line => line.Trim()).ToArray();
            return devices;
        }
    }


    


    using it :

    


    var audioDevices = FFmpegHelper.GetAudioCaptureDevices();


    


  • Revision 6a464eca05 : Speed up mode search depending on relative ref frame position This commit enabl

    18 août 2014, par Jingning Han

    Changed Paths :
     Modify /vp9/encoder/vp9_rdopt.c


     Modify /vp9/encoder/vp9_speed_features.c


     Modify /vp9/encoder/vp9_speed_features.h



    Speed up mode search depending on relative ref frame position

    This commit enables the encoder to record the location of the
    center frame to generate alter reference frame. It then allows to
    skip checking prediction modes of other reference frame types when
    it comes to encode this frame.

    The speed 3 runtime is reduced for the test sequences :
    bus at CIF 1000 kbps, 9791 ms -> 9446 ms, i.e., 3.5% speed-up,
    pedestrian at 1080p 2000 kbps, 184043 ms -> 175730 ms, i.e., 4.5%
    speed-up.

    No compression performance change observed.

    Change-Id : Iacfde3bcc1445964e7a241f239bd6ea11cb94bd1

  • command line ffmpeg or sox convert audio tracks from stereo to 7.1 upmix

    4 novembre 2016, par user1320370

    Hi I have 3 flac multichannel files that I need to mix :

    1) 7.1 channels

    2) 7.1 channels

    3) Stereo channels

    to avoid eventual problems on mixing (some of these already exist) I like to convert the stereo track to 7.1, in this mode all the 3 files are 7.1 files ready to mix.

    I serching for a command line like :

    ffmpeg input_stereo.flac output_7.1.flac

    or

    sox input_stereo.flac output_7.1.flac

    I suppose the setting are :

    Left -----> FL (front left)

    Right -----> FR (front right)

    Left + right -----> FC (front center)

    (empty) -----> LFE (subwoofer)

    Left -----> BL (back left)

    Right -----> BR (back right)

    Left -----> SL (side left)

    Right -----> SR (side right)

    is possible post a commmand line that do this ?

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