Multimedia | Scripting and security

Audio fingerprinting and recognition algorithm implemented in Python, see the explanation here: How it works Dejavu can memorize audio by listening to it once and fingerprinting it. Then by playing a song and recording microphone input, Dejavu attempts to match the audio against the fingerprints held in the database, returning the song being played. Note that for voice recognition, Dejavu is not the right tool! Dejavu excels at recognition of exact signals with reasonable amounts of noise. Installation and Dependencies: Read INSTALLATION.md Setup First, install the above dependencies. Second, you’ll need to create a MySQL database where Dejavu can store fingerprints. […]

Multimedia PowerShell

Pronunciar textos con distintas voces del sistema operativo

22/11/201722/11/2017

$text = "
<LANG LANGID=""409"">I play</LANG>
<LANG LANGID=""407""><PITCH MIDDLE = '2'>Ich spiele</PITCH></LANG>
<LANG LANGID=""407"">Ich spiele</LANG>
<LANG LANGID=""407"">Yo juego</LANG>
" 
 
$speaker = New-Object -ComObject Sapi.SpVoice 
$speaker.Rate = 0
$speaker.Speak($text)

$text = "

<LANG LANGID=""407""><PITCH MIDDLE = '2'>Ich spiele</PITCH></LANG>

<LANG LANGID=""407"">Ich spiele</LANG>

<LANG LANGID=""407"">Yo juego</LANG>

$speaker = New-Object -ComObject Sapi.SpVoice

$speaker.Rate = 0

$speaker.Speak($text)

Multimedia Recognition

But what is the Fourier Transform? A visual introduction

10/10/201710/02/2018

Multimedia

Icecast 2

09/10/201709/11/2017

Icecast is a streaming media (audio/video) server which currently supports Ogg (Vorbis and Theora), Opus, WebM and MP3 streams. It can be used to create an Internet radio station or a privately running jukebox and many things in between. It is very versatile in that new formats can be added relatively easily and supports open standards for communication and interaction. Icecast is distributed under the GNU GPL, version 2. More information http://icecast.org/

Multimedia

Livestreamer

07/10/201709/11/2017

Livestreamer is a command-line utility that pipes video streams from various services into a video player, such as VLC. The main purpose of Livestreamer is to allow the user to avoid buggy and CPU heavy flash plugins but still be able to enjoy various streamed content. There is also an API available for developers who want access to the video stream data. Latest release: 1.12.2 (Changelog) GitHub: https://github.com/chrippa/livestreamer Issue tracker: https://github.com/chrippa/livestreamer/issues PyPI: https://pypi.python.org/pypi/livestreamer Discussions: https://groups.google.com/forum/#!forum/livestreamer IRC: #livestreamer @ Freenode Free software: Simplified BSD license

Multimedia PowerShell

Reproducir notas musicales con PowerShell

23/09/201723/09/2017

#Genera tonos simples en el altavoz

#Función Beep 
#Beep(Frecuencia,Duración)
 
#Freq: la frecuencia del sonido, en hertz
#Duración: duración del sonido, en milisegundos

#Frecuencias notas 4ª octava
#Do4	261,625565 Hz
#Re4	293,664768 Hz
#Mi4	329,627557 Hz
#Fa4	349,228231 Hz
#Sol4	391,995436 Hz
#La4	440,000000 Hz
#Si4	493,883301 Hz

[System.Console]::Beep(261,500)
[System.Console]::Beep(293,500)
[System.Console]::Beep(329,500)
[System.Console]::Beep(349,500)
[System.Console]::Beep(391,500)
[System.Console]::Beep(440,500)
[System.Console]::Beep(493,500)

#Genera tonos simples en el altavoz

#Función Beep

#Beep(Frecuencia,Duración)

#Freq: la frecuencia del sonido, en hertz

#Duración: duración del sonido, en milisegundos

#Frecuencias notas 4ª octava

#Do4 261,625565 Hz

#Re4 293,664768 Hz

#Mi4 329,627557 Hz

#Fa4 349,228231 Hz

#Sol4 391,995436 Hz

#La4 440,000000 Hz

#Si4 493,883301 Hz

[System.Console]::Beep(261,500)

[System.Console]::Beep(293,500)

[System.Console]::Beep(329,500)

[System.Console]::Beep(349,500)

[System.Console]::Beep(391,500)

[System.Console]::Beep(440,500)

[System.Console]::Beep(493,500)

Multimedia PowerShell

Activar y desactivar el audio desde PowerShell

22/09/201709/09/2017

Utilizar el código https://gist.github.com/PrateekKumarSingh/35e9dc5cceabf7c35bb45f6ee59c0b52 que carga las funciones para activar y desactivar el audio

#Adding definitions for accessing the Audio API
Add-Type -TypeDefinition @'
using System.Runtime.InteropServices;
[Guid("5CDF2C82-841E-4546-9722-0CF74078229A"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IAudioEndpointVolume {
  // f(), g(), ... are unused COM method slots. Define these if you care
  int f(); int g(); int h(); int i();
  int SetMasterVolumeLevelScalar(float fLevel, System.Guid pguidEventContext);
  int j();
  int GetMasterVolumeLevelScalar(out float pfLevel);
  int k(); int l(); int m(); int n();
  int SetMute([MarshalAs(UnmanagedType.Bool)] bool bMute, System.Guid pguidEventContext);
  int GetMute(out bool pbMute);
}
[Guid("D666063F-1587-4E43-81F1-B948E807363F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IMMDevice {
  int Activate(ref System.Guid id, int clsCtx, int activationParams, out IAudioEndpointVolume aev);
}
[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IMMDeviceEnumerator {
  int f(); // Unused
  int GetDefaultAudioEndpoint(int dataFlow, int role, out IMMDevice endpoint);
}
[ComImport, Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")] class MMDeviceEnumeratorComObject { }
public class Audio {
  static IAudioEndpointVolume Vol() {
    var enumerator = new MMDeviceEnumeratorComObject() as IMMDeviceEnumerator;
    IMMDevice dev = null;
    Marshal.ThrowExceptionForHR(enumerator.GetDefaultAudioEndpoint(/*eRender*/ 0, /*eMultimedia*/ 1, out dev));
    IAudioEndpointVolume epv = null;
    var epvid = typeof(IAudioEndpointVolume).GUID;
    Marshal.ThrowExceptionForHR(dev.Activate(ref epvid, /*CLSCTX_ALL*/ 23, 0, out epv));
    return epv;
  }
  public static float Volume {
    get {float v = -1; Marshal.ThrowExceptionForHR(Vol().GetMasterVolumeLevelScalar(out v)); return v;}
    set {Marshal.ThrowExceptionForHR(Vol().SetMasterVolumeLevelScalar(value, System.Guid.Empty));}
  }
  public static bool Mute {
    get { bool mute; Marshal.ThrowExceptionForHR(Vol().GetMute(out mute)); return mute; }
    set { Marshal.ThrowExceptionForHR(Vol().SetMute(value, System.Guid.Empty)); }
  }
}
'@ -Verbose

#Desactivar audio
[Audio]::Mute = $true

#Activar audio
[Audio]::Mute = $false

#Adding definitions for accessing the Audio API

Add-Type -TypeDefinition @'

using System.Runtime.InteropServices;

[Guid("5CDF2C82-841E-4546-9722-0CF74078229A"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]

interface IAudioEndpointVolume {

// f(), g(), ... are unused COM method slots. Define these if you care

int f(); int g(); int h(); int i();

int SetMasterVolumeLevelScalar(float fLevel, System.Guid pguidEventContext);

int j();

int GetMasterVolumeLevelScalar(out float pfLevel);

int k(); int l(); int m(); int n();

int SetMute([MarshalAs(UnmanagedType.Bool)] bool bMute, System.Guid pguidEventContext);

int GetMute(out bool pbMute);

}

[Guid("D666063F-1587-4E43-81F1-B948E807363F"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]

interface IMMDevice {

int Activate(ref System.Guid id, int clsCtx, int activationParams, out IAudioEndpointVolume aev);

}

[Guid("A95664D2-9614-4F35-A746-DE8DB63617E6"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]

interface IMMDeviceEnumerator {

int f(); // Unused

int GetDefaultAudioEndpoint(int dataFlow, int role, out IMMDevice endpoint);

}

[ComImport, Guid("BCDE0395-E52F-467C-8E3D-C4579291692E")] class MMDeviceEnumeratorComObject { }

public class Audio {

static IAudioEndpointVolume Vol() {

var enumerator = new MMDeviceEnumeratorComObject() as IMMDeviceEnumerator;

IMMDevice dev = null;

Marshal.ThrowExceptionForHR(enumerator.GetDefaultAudioEndpoint(/*eRender*/ 0, /*eMultimedia*/ 1, out dev));

IAudioEndpointVolume epv = null;

var epvid = typeof(IAudioEndpointVolume).GUID;

Marshal.ThrowExceptionForHR(dev.Activate(ref epvid, /*CLSCTX_ALL*/ 23, 0, out epv));

return epv;

}

public static float Volume {

get {float v = -1; Marshal.ThrowExceptionForHR(Vol().GetMasterVolumeLevelScalar(out v)); return v;}

set {Marshal.ThrowExceptionForHR(Vol().SetMasterVolumeLevelScalar(value, System.Guid.Empty));}

}

public static bool Mute {

get { bool mute; Marshal.ThrowExceptionForHR(Vol().GetMute(out mute)); return mute; }

set { Marshal.ThrowExceptionForHR(Vol().SetMute(value, System.Guid.Empty)); }

}

'@ -Verbose

#Desactivar audio

[Audio]::Mute = $true

#Activar audio

[Audio]::Mute = $false

Multimedia PowerShell

Convertir una lista de ficheros MP4 a MP3 con FFmpeg

03/05/201703/05/2017

ls *.mp4 | %{
$_.FullName
#Descargar FFmpeg https://ffmpeg.org/download.html
E:\programas\ffmpeg\bin\ffmpeg.exe -i $_.FullName -acodec libmp3lame -ab 128k $_.FullName.replace(".mp4",".mp3")
}

ls *.mp4 | %{

$_.FullName

#Descargar FFmpeg https://ffmpeg.org/download.html

E:\programas\ffmpeg\bin\ffmpeg.exe -i $_.FullName -acodec libmp3lame -ab 128k $_.FullName.replace(".mp4",".mp3")

}

Multimedia PowerShell

Descargar vídeos de Youtube

27/04/201717/04/2017

#Leer fichero con vídeos para descargar
(Get-Content e:\descargar.txt) | %{
$_
#Utilizar el programa youtube-dl
#Descargar el programa youtube-dl desde https://github.com/rg3/youtube-dl/releases
e:\youtube-dl.exe $_
}

#Leer fichero con vídeos para descargar

(Get-Content e:\descargar.txt) | %{

#Utilizar el programa youtube-dl

#Descargar el programa youtube-dl desde https://github.com/rg3/youtube-dl/releases

e:\youtube-dl.exe $_

}

Multimedia PowerShell

Leer artículos de la Wikipedia mediante la voz del Sistema Operativo con PowerShell

22/03/201710/03/2017

Add-Type -AssemblyName System.Speech
$synthesizer = New-Object -TypeName System.Speech.Synthesis.SpeechSynthesizer
$synthesizer.SelectVoice("Microsoft Zira Desktop")
$synthesizer.Rate=0

$json=Invoke-WebRequest -Uri 'https://en.wikipedia.org/w/api.php?action=parse&format=json&prop=text&page=PowerShell' | ConvertFrom-JSON
 
$json.parse.text.'*' -replace "<.*?>" | %{
$synthesizer.Speak($_)
}

Add-Type -AssemblyName System.Speech

$synthesizer = New-Object -TypeName System.Speech.Synthesis.SpeechSynthesizer

$synthesizer.SelectVoice("Microsoft Zira Desktop")

$synthesizer.Rate=0

$json=Invoke-WebRequest -Uri 'https://en.wikipedia.org/w/api.php?action=parse&format=json&prop=text&page=PowerShell' | ConvertFrom-JSON

$json.parse.text.'*' -replace "<.*?>" | %{

$synthesizer.Speak($_)

}

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