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Selecting a camera and outputting video when connecting multiple cameras in Unity

I am trying to show AR video by connecting the hand tracking camera device (Leap motion: window device manager list: 0) and webcam camera (window device manager list: 1) in Unity.
Leap motion connects using the manufacturer's SDK and package files, so there is no need for additional coding to connect the camera in Unity.
The problem occurs when I connect a webcam camera (window device manager list: 1) in Unity and show AR video.
When the following code is applied to an object, if both Leap motion and webcam camera are connected, leap motion is recognized and output as video, and video output of webcam camera becomes impossible.
If only the webcam is connected after unplugging the leap motion from the PC, the video output of the webcam camera is possible.
I want to output video by selecting webcam camera (window device manager list: 1) on the object with both Leap motion and webcam camera connected to the PC.
Since I am a beginner in Unity, I need to simply modify it in the code below.
Waiting for help.
using UnityEngine;
using System.Collections;
public class WebCam : MonoBehaviour {
// Use this for initialization
void Start () {
WebCamTexture web = new WebCamTexture(1280,720,60);
GetComponent<MeshRenderer>().material.mainTexture = web;
web.Play();
}
// Update is called once per frame
void Update () {
}
}

There is a constructor of WebCamTexture that takes the parameter
deviceName: The name of the video input device to be used.
You can list all available devices via WebCamTexture.devices and get the name like e.g.
var devices = WebCamTexture.devices;
var webcamTexture = new WebCamTexture(devices[1].name);
You might also be able then to filter out the device you need like e.g.
using System.Linq;
...
var device = devices.Select(d => d.name).FirstOrDefault(n => !n.Contains("Leap"));
For finding out how the cameras are called and to be able to filter by name you could print them all like e.g.
Debug.Log(string.Join("\n", devices.Select(d => d.name)));
Theoretically you could even feed them into a dropdown and let the user decide which device to use before creating the WebCamTexture then you wouldn't have to guess the name hardcoded at all ;)
Also note:
Call Application.RequestUserAuthorization before creating a WebCamTexture.

Intel Real Sense Audio Not Coming

Am recording the video by intel real sense camera. The video recording is done and working successfully. But audio is not coming in that video.
For that my question is...
My configuration is Lenovo Yoga 15 with internal real sense camera
I want to install audio driver for sound ? Is that are required ?
please give me some suggestion.
session = PXCMSession.CreateInstance();
senseManager = session.CreateSenseManager();
senseManager.captureManager.SetFileName("new4.rssdk", true);
senseManager.EnableStream(PXCMCapture.StreamType.STREAM_TYPE_COLOR, WIDTH, HEIGHT, 30);
senseManager.Init();
for (int i = 0; i < 200; i++)
{
if (senseManager.AcquireFrame(true).IsError()) break;
PXCMCapture.Sample sample = senseManager.QuerySample();
senseManager.ReleaseFrame();
colorBitmap.Dispose();
}

I didn't understand the question well, so do you want to run audio and record the video together?
If yes, you have to create an instance of the class responsible for doing that.
take a look here Speech Recognition
I used two threads in order to do that. I have an application where I use facial recognition and audio recognition. I decided to split them and it worked very well.

Unity3D. Accessing camera torch/flash issues - Torch works but can't access while streaming webcamtexture

I am developing an app in unity in which the user can take photos using their device camera. This is working great using Unity's webcamtexture. However, there is no flash support for webcamtexture, so I have written my own code to access the device Torch. The code WORKS - However it doesn't work while streaming the webcamtexture (the camera is in use so the java service call returns an error). Does anyone have any suggestions for how to get around this issue? Is there any way to use Unity's WebCamTexture to activate the camera torch? Here is my code for activating the camera torch:
AndroidJavaClass cameraClass = new AndroidJavaClass("android.hardware.Camera");
// This is an ugly hack to make Unity
// generate Camera permisions
WebCamDevice[] devices = WebCamTexture.devices;
int camID = 0;
camera = cameraClass.CallStatic<AndroidJavaObject>("open", camID);
// I'm pretty sure camera will never be null at this point
// It will either be a valid object or Camera.open would throw an exception
if (camera != null)
{
AndroidJavaObject cameraParameters = camera.Call<AndroidJavaObject>("getParameters");
cameraParameters.Call("setFlashMode","torch");
camera.Call("setParameters",cameraParameters);
Active = true;
}

Try checking out camera capture kit for unity. It gives that functionality you want for Android as well as the source code for it.
https://www.assetstore.unity3d.com/en/#!/content/56673

Aforge and CyberLink YouCam , camera not start

I work on project that capture an images from webcams using C# and Aforge.
When the camera is a 'CyberLink' i get this frame from the camera:
The code that you see here is only part of my code of course, but it demonstrates my use in Aforge.
Get all cams on this PC:
var webCam = new FilterInfoCollection(FilterCategory.VideoInputDevice);
var cams = new List<VideoCaptureDevice>();
foreach (FilterInfo camInfo in webCam)
{
var cam = new VideoCaptureDevice(camInfo.MonikerString);
cam.NewFrame += NewFrameHandler;
cams.Add(cam);
}
I have a timer that every few minutes starts the camera like this:
foreach (var cam in cams)
{
cam.Start();
}
When i get the event 'NewFrame' i call to my function 'NewFrameHandler' to save the frame and close the camera:
var bit = (Bitmap)eventArgs.Frame.Clone();
bit.Save("#c:\Cam_" + DateTime.Now.Ticks + ".png", ImageFormat.Png);
foreach (var cam in cams)
{
cam.SignalToStop();
}
As i say the code works great, only when the camera is CyberLink i have this problem.

I removed the youcam software and now I get the frames properly.
Would love to hear if anyone has a more elegant solution.

The YouCam software may hijack the stream, and removing it may be the only option. You could also check if YouCam offers an API of its own that allows you to interface with the camera. I have used AForge before and it worked great with the Logitech cameras I was using. Your code looks good to me, though it was a year or two ago when I was using AForge.

How to mute the microphone c#

I wanted to know, what would the coding be if I wanted to toggle mute/unmute of my microphone. I am making a program that can run in the background and pickup a keypress event and toggle mute/unmute of the mic. Any help with any of that coding would be very helpful. I am pretty new to C#, and this is just a really simple program I wanted to make. That is all it does, is it will listen for keypress of the spacebar, even when the program is in the background, then when the spacebar is pressed it will mute/unmute the mic.
Thank you for any and all help!

For Windows Vista and newer, you can no longer use the Media Control Interface, Microsoft has a new Core Audio API that you must access to interface with audio hardware in these newer operating systems.
Ray Molenkamp wrote a nice managed wrapper for interfacing with the Core Audio API here:
Vista Core Audio API Master Volume Control
Since I needed to be able to mute the microphone from XP, Vista and Windows 7 I wrote a little Windows Microphone Mute Library which uses Ray's library on the newer operating systems and parts of Gustavo Franco's MixerNative library for Windows XP and older.

You can download the source of a whole application which has muting the microphone, selecting it as a recording device, etc.
http://www.codeguru.com/csharp/csharp/cs_graphics/sound/article.php/c10931/

you can use MCI (Media Control Interface) to access mics and change their volume system wise. Check the code below it should be setting volume to 0 for all system microphones. Code is in c; check pinvoke for details on how to translate this code to c#
#include "mmsystem.h"
...
void MuteAllMics()
{
HMIXER hmx;
mixerOpen(&hmx, 0, 0, 0, 0);
// Get the line info for the wave in destination line
MIXERLINE mxl;
mxl.cbStruct = sizeof(mxl);
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_WAVEIN;
mixerGetLineInfo((HMIXEROBJ)hmx, &mxl, MIXER_GETLINEINFOF_COMPONENTTYPE);
// find the microphone source line connected to this wave in destination
DWORD cConnections = mxl.cConnections;
for (DWORD j=0; j<cConnections; j++)
{
mxl.dwSource = j;
mixerGetLineInfo((HMIXEROBJ)hmx, &mxl, MIXER_GETLINEINFOF_SOURCE);
if (MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE == mxl.dwComponentType)
{
// Find a volume control, if any, of the microphone line
LPMIXERCONTROL pmxctrl = (LPMIXERCONTROL)malloc(sizeof MIXERCONTROL);
MIXERLINECONTROLS mxlctrl =
{
sizeof mxlctrl,
mxl.dwLineID,
MIXERCONTROL_CONTROLTYPE_VOLUME,
1,
sizeof MIXERCONTROL,
pmxctrl
};
if (!mixerGetLineControls((HMIXEROBJ) hmx, &mxlctrl, MIXER_GETLINECONTROLSF_ONEBYTYPE))
{
DWORD cChannels = mxl.cChannels;
if (MIXERCONTROL_CONTROLF_UNIFORM & pmxctrl->fdwControl)
cChannels = 1;
LPMIXERCONTROLDETAILS_UNSIGNED pUnsigned = (LPMIXERCONTROLDETAILS_UNSIGNED)
malloc(cChannels * sizeof MIXERCONTROLDETAILS_UNSIGNED);
MIXERCONTROLDETAILS mxcd =
{
sizeof(mxcd),
pmxctrl->dwControlID,
cChannels,
(HWND)0,
sizeof MIXERCONTROLDETAILS_UNSIGNED,
(LPVOID) pUnsigned
};
mixerGetControlDetails((HMIXEROBJ)hmx, &mxcd, MIXER_SETCONTROLDETAILSF_VALUE);
// Set the volume to the middle (for both channels as needed)
//pUnsigned[0].dwValue = pUnsigned[cChannels - 1].dwValue = (pmxctrl->Bounds.dwMinimum+pmxctrl->Bounds.dwMaximum)/2;
// Mute
pUnsigned[0].dwValue = pUnsigned[cChannels - 1].dwValue = 0;
mixerSetControlDetails((HMIXEROBJ)hmx, &mxcd, MIXER_SETCONTROLDETAILSF_VALUE);
free(pmxctrl);
free(pUnsigned);
}
else
{
free(pmxctrl);
}
}
}
mixerClose(hmx);
}
here you can find more code on this topic
hope this helps, regards

I have several microphones in win7 and class WindowsMicrophoneMuteLibrary.CoreAudioMicMute is incorrect in this case.
so I change the code and works great because now his cup Whistle all microphones and not just in the last recognized by win7.
I am attaching the new class to put in place.
http://www.developpez.net/forums/d1145354/dotnet/langages/csharp/couper-micro-sous-win7/