Detecting multiple webcams

There's a lot of old posts about this, but no solutions. Does anyone know a way to detect multiple webcams? It appears that JMF can't do this, but maybe someone has come up with another way? I'm trying to switch between 2 usb webcams.
Thanks!

What type of scanner do you have? Did it come with software or are you just using Image Capture? I've a Canon printer/scanner and use the supplied software to preview and select the item that I want to scan at any given time. Never used Image Capture before...
Clinton

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Skype doesn't detect the webcam

I know this problem has been posted out many times, but unfortunately after trying each solution, it's resolves nothing on my problem.
I'm using ASUS X44C series, skype doesn't detect the webcam itself. And using Windows 7 64bit.
I've been trying to reinstal the lifeframe for webcam. Doesn't work
Tried to using many cam. doesn't work
Tried to making default the windows itself. Doesn't work
Reinstall and update skype. Still doesn't work
I even calling an IT to fix this, but he still unable to find the problems.
Any ideas?

Please, run the DirectX diagnostics tool (32-bit version).
Go to Windows Start and in the Run box type dxdiag.exe and press the OK button. This will start the DirectX diagnostics program. Run this diagnostics and save the results to a file. Please, attach this file to your post.
Be aware that you will have to zip this file before attaching it here.

Detecting multiple key presses

Using the code below I am trying to detect keypresses for a java applet which involves holding down of several keys at once. I have 2 problems, probably related. Firstly I can only detect 3-4 simultaneous keys being held down and secondly the keyPressed and released! events are continually fired while a key is held down not just when it was first pressed as you would think. I would like to be able to detect up to a maximum of 16 keys being held down at once, is this possible? I am working on a unix system in x-windows which I think accounts for the auto-repeat problem, but why am I having trouble detecting multiple simultaneous keys being held down?
It there a boolean function I can call to check the state of given keys at a given time, that would be very useful?
Any help is appreciated.
Ian
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
switch(keyCode){
case java.awt.event.KeyEvent.VK_O: //o
     odown=true;
break;
case java.awt.event.KeyEvent.VK_P: //p
     pdown=true;
break;
case java.awt.event.KeyEvent.VK_Q: //q
     qdown=true;
break;
case java.awt.event.KeyEvent.VK_W: //w
     up=true;
break;
case java.awt.event.KeyEvent.VK_A: //a
     left=true;
break;
case java.awt.event.KeyEvent.VK_S: //s
     down=true;
break;
case java.awt.event.KeyEvent.VK_D: //d
     right=true;
break;
}//method keypressed
public void keyTyped(KeyEvent e) {
}//method keytyped
public void keyReleased(KeyEvent e) {
int keyCode = e.getKeyCode();
switch(keyCode){
case java.awt.event.KeyEvent.VK_O: //o
     odown=false;
break;
case java.awt.event.KeyEvent.VK_P: //p
     pdown=false;
break;
case java.awt.event.KeyEvent.VK_Q: //q
qdown=false;
break;
case java.awt.event.KeyEvent.VK_W: //w
     up=false;
break;
case java.awt.event.KeyEvent.VK_A: //a
     left=false;
break;
case java.awt.event.KeyEvent.VK_S: //s
     down=false;
break;
case java.awt.event.KeyEvent.VK_D: //d
     right=false;
break;
}//method keyReleased

Did you ever find a solution to this problem. I am experiencing a similar problem. I want to be able to disable the auto-repeat function of the keyboard, so that I can tell if the user is holding down the key, or pressing it several times.
If you have found a solution please let me know at [email protected]
Thanks,
Ben Newton

Skype can't detect mt webcam since I updated to la...

Hi
I have an Advent Modena 202m and since I updated to the latest version (7.0.85.102) skype cant detect my webcam even though my webcam is switched on. I hit fn+f7 and it tells me the webcam is switched on.
Any ideas? Thanks.

Please, run the DirectX diagnostics tool (32-bit option).
Go to Windows Start and in the Run box type dxdiag.exe and press the OK button. This will start the DirectX diagnostics program. Run this diagnostics and save the results to a file. Please, attach this file to your post.
Be aware that you will have to zip this file before attaching it here.

To detect USB webcam

Hi, I am trying to detect USB webcam using NI Vision Assistant but its not works ! I already installed requisite drivers for it though its not possible to acquire images using webcam.

f your goal is to work with you ltener vision first note that the programs have a cost, in any case you can use them in mode of assessment and expire over a period of time. You can perform image acquisition only drivers from VAS , but for any treatment or handling or VDM VBAI you need , plus VAS . You can download the evaluation software from the following links :
Módulo NI Vision Development https://lumen.ni.com/nicif/us/evalvisiondevmodule/content.xhtml
NI Vision Builder para Inspección Automatizada (AI) https://lumen.ni.com/nicif/us/machinevisionbrochure/content.xhtml
NI Vision Acquisition Software http://joule.ni.com/nidu/cds/view/p/id/3818/lang/en
In this example, we will create a program in Labview to capture images from a USB camera to your application for further processing using the NI Vision module.
https://decibel.ni.com/content/docs/DOC-30531
Atom
Certified LabVIEW Associate Developer

Detect possible webcam resolutions

Happy New Year to everybody!
So, I searched forums and googled and not found anything on how to detect the Webcam supported resolutions in flash.
The whole issue stems from the issue when I use Camera.getCamera() (only have one attached to my laptop) I'm always getting
different values for camera.height and camera.width. Also some 720p cams have different aspect ratio then the old cameras.
Is there possible to detect somehow what's the largets resolution is supported by a webcam? Or all possible resolutions supported?
GLTA.

hi
I´m trying to know if the webcam is 4/3 or 16/9. You know that your solution could work?
cam.setMode(64000,48000,fps);
switch (ScaleCam(cam)) {
                case 1.33: // 4/3
                    mx.controls.Alert.show("4/3"+"\n"+cam.width+"\n"+cam.height);
                    break;
                case 1.77: // 16/9
                    mx.controls.Alert.show("16/9"+"\n"+cam.width+"\n"+cam.height);
                    break;
                case 3: //
                    break;
protected function ScaleCam(cam:Camera):Number {
    var scale:Number = new Number();
    scale = cam.width/cam.height;
    scale = Number(scale.toFixed(2));
    return scale;
I haven´t got webcam HD 16/9, so can´t try this solution.
Thanks!

Detecting multiple people using Kinect audio source

Hello,
I'm working with the Kinect for windows v2 and I want to detect multiple people using the Kinect audio frame source.
I mean that if multiple people are talking simultaneously while the Kinect is working, then I want the Kinect to be able to distinguish between the people according to their voices and to save each voice to a separate audio file. What do I need to do to
the Kinect audio frame source to achieve that?
thanks,
Dror.

The AudioBeamSubFrame will provide you access to the AudioBodyCorrelation object. You can review the AudioBasics sample to see how to get access to the AudioBeamSubFrame list.
The API returns a collection of audio body correlations, in relation to the beam itself. You can use this to identify which enrolled tracked body is likely speaking. If Kinect is not tracking any bodies, this list will be empty. If one or more bodies is
being tracked, this will return an ordered list containing body tracking IDs. The list is ordered based on the horizontal angle of the body relative to the current audio beam angle. The first body in the list is the one closest to the audio beam and the last
is the furthest away from the audio beam.
You will use the data against a list of tracked bodies you currently have. Refer to the body basics on how to get the tracking id's..
Carmine Sirignano - MSFT

Detecting multiple touches in beta 5

I was using the example found in coding how tos for how to detect multiple touches which went something like this:
- (void)touchesChangedWithEvent:(UIEvent*)event
NSSet *touches = [event allTouches];
if (touches.count > 1)
// have multiple touches
So now they removed this method so i switched my touch detection to use:
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
I was expecting touches.count to show me how many touches there are but this always seems to equal 1. Am I missing something or is it a simulator bug, or sdk bug?

Well now I just feel dumb. Thanks for the quick response.

Detecting multiple images

I just bought a macbook pro for the first time but am having some trouble with image capture with my scanner. When I go to the option of detecting multiple items, it does not work. All it does is scan one big scan instead of each individual item. Any help?

What type of scanner do you have? Did it come with software or are you just using Image Capture? I've a Canon printer/scanner and use the supplied software to preview and select the item that I want to scan at any given time. Never used Image Capture before...
Clinton

Detecting multiple occurences of a value in data? (conundrum)

Ok, if there are any good java utilities to help, this is where I'm going to find them...
I'm trying to detect multiple occurences in a data set. Piling them into an array and using Array.sort() was a good start - I'm trying to find the max and min value of data that occurs more than once in the set.
However, when the data set becomes much larger, I can't hold the set in memory. Is there an elegant solution to this? I'm at a loss to find a nice way of doing it. Its an interesting problem...
Thanks,
Steve

Hi Steve!
You can do this with a bit of programming yourself :-) If all values don't fit into your memory, just split them into smaller pieces. Do you need to sort out all duplicates or do you need to detect them only?
The idea:
Create a new ArrayList oder a Set of your choice and put some elements in it (a fixed number or just wait for an OutOfMemoryException to be thrown and catch this). Then sort the ArrayList and write it to a temporary file, store the file handle or name in a seperate list. Go on like this until all your data is sorted.
After that, build one loop fetching just one value from each file and compare them - mainly this is mergesort. If duplicate values occur then, well, you have dupes :-)
If needed I could look for the source...
Cheers,
Jan

Skype can't detect any webcam

Hi, Since I updated the newer version of skype 6.11, my video does not work anymore. When I go under options, I get the message, "skype can't detect any webcam". I have a built-in camera in my laptop using windows 7. I know my camera works, but I don't know how to make skype detect my built-in camera. So far, I can call people, I see and hear them and they can hear me, but they can't see me since I don't even have the options to put on my camera anymore. Please, can anyone help me with this issue? I have already uninstalled and reinstalled skype, but it does not work. Thank you

Please, run the DirectX diagnostics tool. Go to Windows Start and in the Run box type dxdiag.exe and press the OK button. This will start the DirectX diagnostics program. Run this diagnostics and save the results to a file. Please, attach this file to your post. Be aware that you will have to zip this file before attaching it here.

My Canon MP Navigator scanner software no longer detects multiple photos on the platen - help!

My Canon MP Navigator scanner software no longer detects multiple photos on the platen - help! I have scanned thousands of old photos over the last few months without problem. I scanned several full pages from photo albums right before this problem began. I wonder if there is some sort of memory which is not being cleared. I have researched everything I can findto no avail. Any ideas?

I'm not familiar with this software, but if your scanner is supported, you can achieve this task via Preview.app.
Printer and scanner software available for download
http://support.apple.com/kb/HT3669#gestetner
I believe your model would fall under the MX880 series, and if that's correct, you'll be all set once you learn Preview's way of scanning.
Best of luck!

Skype not detecting my webcam, please reply..

Hi, I am currently using the built-in HD Webcam 101 on my laptop for Skype. This is my exact laptop: http://h10025.www1.hp.com/ewfrf/wc/product?product=4229965&lc=en&cc=us&dlc=en&lang=en&cc=us
I've been able to use the video call perfectly fine up until this past week. Skype is not able to detect my webcam at all and on my Device Manager, my HD Webcam 101 says that it is working properly.
I've tried disabling and then enabling it. It works! But, the same issue re-occurs whenever I restart my laptop. Obviously, I don't want to keep doing that procedure just to get it working. Is there anyway you guys can help me fix this issue? It is becoming a big problem because I make a lot of business video calls over Skype. Thanks...hope I get a response asap.

Are you starting Skype automatically when you start Windows, or do you start Skype manually after Windows is already running? If you're starting Skype with Windows, try changing to letting Windows start before starting Skype to see if that makes any difference.
When Skype doesn't detect your webcam, if you click on Tools > Options > Video settings, what does it say in the "Select webcam" box? If you click on the pull down arrow next to that box, are there choices that can be selected there?
If there is nothing that can be selected in Video settings, and since you weren't having this problem up until recently, you can try recetting your Skype configuration files with this procedure:
Quit Skype. Hold the Windows key and type r. In the box that comes up type %appdata% <enter>. Scroll down to find the \Skype folder and rename it something like \Skype_old. Restart Skype.
Note: Renaming the Skype folder will move IM and call history to the renamed folder. They can be recovered with a few extra steps.
Please note: I do not respond to requests for help via Private Message.

Can't detect "creative webcam pro"

Hi,
can't detect "creative webcam pro",
Vector devices=CaptureDeviceManager.getDeviceList(null);
System.out.println(devices.size());
System.out.println(devices.elementAt(0));
i get:
1
JavaSound audio capture : javasound://44100
"java JMStudio" doesn't detect also.
win 2000, JMF2.1.1b(Java),JDK1.4.1.
can somebody help me?

Hi.
I have the same problem with my Logitech webcam. But i tried the registry scan and the webcam appeared. But: With CaptureDeviceManager.gerDeviceList(..) I get only 2 sound devices, not my vfw-webcam.
Any idea?
Greetings, Steffen

JMFRegistry: Detect virtual webcam instead actual webcam

Hi all
I have a issue of not detecting my webcam by JMF registry.
Initially it was detected and worked fine. Recently I have installed virtual web camera.
So when I tried to capture video by JMFStudio (JMFStudio->capture) it plays the video from virtual web cam software not from my real web cam.
And under the JMF registry capture devices "vfw:Microsoft WDM Image Capture (Win32):0" was found.
Seems Virtual web cam driver doesn't change this because before installing the virtual software it was the same.
Virtual webcam software provides us an interface to change the video source and there it detects my web camera. So still I can use my web cam with JMF through this virtual web cam driver.
"I can remember that I have changed the default video source by an windows interface where it was prompt by JMF it self, it was a very simple interface having a single drop down where it carries all the capturing drivers I have installed. But not I cannot find this interface"
So can anyone please help me to get rid of this issue
Thnak You

Hi this is to answer my own question, I have found that JMF doesnot detect all the webcams(virtual or real) having same id "vfw:Microsoft WDM Image Capture (Win32):0.
So what we have to do is disable the current selected camera and start rescan of the capturing devices. Then it prompts a window to select what we want.
This is the link why we need such virtual webcam.
These are many virtual web cams which are free and works with JMF.
Edited by: deshan on Jun 8, 2009 7:02 PM

Detecting multiple webcams

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