how to detect webcam in asp.net

[baluMunugoti]

Hi to all

I have done one webcam project which will supports view live webcam images.I am using "ENTER USB 2.0" locally its working fine..when i upload it to the webserver and test with client browser..Its not working..its getting errors as "No devices Found"..is there any server settings to detect the webcams?..

How can we detect any type of webcams in asp.net..?Or is there any activeX plug-ins for detecting the webcam on client browsers..

Its very important to me..please share with me..if you have any ideas?

thanks in advance..



Regards

Balu Munugoti

[Plater]

Do you want to access cameras on the client or on the server?
If on the client, you will need an activeX object (or some other object; flash, java, whatever) to access the cameras.
For the server you just need a way to convert the camera images to a picture

[baluMunugoti]

thank you so much for your reply..
actually my project is onlinelessons..profesor can teach music classes from any where using attached livewebcam device in the website..where students can see this livewebcam video from the site and they can learn the classes..
i have developed capturing video stream and display in the webpage(images will change every millisecond)..its working fine locally..but when i upload it to the server..its not detecting the webcam device..
see this link : http://76.76.101.10/Broadcast.aspx
I am not sure how to detect the device remotly..
if you have any idea please share with me..
again i am very thankful for your reply

thanks in advance

[Frinavale]

thank you so much for your reply..
actually my project is onlinelessons..profesor can teach music classes from any where using attached livewebcam device in the website..where students can see this livewebcam video from the site and they can learn the classes..
i have developed capturing video stream and display in the webpage(images will change every millisecond)..its working fine locally..but when i upload it to the server..its not detecting the webcam device..
see this link : http://76.76.101.10/Broadcast.aspx
I am not sure how to detect the device remotly..
if you have any idea please share with me..
again i am very thankful for your reply

thanks in advance

You aren't going to be able to do this through Web Pages without using an ActiveX. It's not a very good idea to develop ActiveXs because they are considered unsafe and they also limit your users to IE.

Have you considered developing a desktop application that consumes a web service for the professor to use instead?

Have the desktop application call the web service to upload the video and have the asp.net application call the same web service to display the video in the web pages....

You could even run this application off of a USB stick that the prof would carry with them...then you know that students wont be able to abuse this service because it's only distributed to the professors...

Just a thought.

[Plater]

At that rate though, you might as well just use an already made web-cam software, like webcamXP or something.

[baluMunugoti]

thank you for your great reply..
i am using camserver component for capturing the webcam stream..
locally its working fine.but when i upload it to the webserver its not detecting the client machine device..
i need plugins or any activex controls for detecting the device in the webserver from client machine.
profesor no need to use any desktop applications..he can teach from anywhere using internet..when prefesor attach the webcam device, its automatically install the plugins and detect this device to the server..
if you have any idea for my problem..please share with me.
if you want any further clarification,please inform me..
thanks in advance..

Regards
Balu Munugoti,India

[Plater]

If you want to have the device automatically notify the server that a camera has been plugged in, you're going to either need to write custom device drivers for the camera, or have a service running on the computer to detect when a camera is plugged in and send the signal to the server.

[Frinavale]

If you want to have the device automatically notify the server that a camera has been plugged in, you're going to either need to write custom device drivers for the camera, or have a service running on the computer to detect when a camera is plugged in and send the signal to the server.

Exactly what I was trying to get at...you just said it better Plater :)

[baluMunugoti]

thank you for your great reply..
still i am getting the same problem..
when i try website on my system..i am getting the webcam image.but in other system won't..
i think we need to install windows media encoder or any plugins for that ..
If you have any idea,please feel free to share with me..

good luck today.

Regards
Balu Munugoti

[ashish1985s]

Can you please give me the basic idea for how to detect the web cam of client..

[ashish1985s]

Hello Friends..
How to detect the webcam from asp.net application..??

how to use ActiveX object in that can you please provide me some basic code for doing that....

[Frinavale]

Hello Friends..
How to detect the webcam from asp.net application..??

how to use ActiveX object in that can you please provide me some basic code for doing that....

What have you tried so far?
Have you tried to research ActiveX controls?

-Frinny

[ashish1985s]

What have you tried so far?
Have you tried to research ActiveX controls?

-Frinny

Thanks for your quick replay..

Actually i came to know that ActiveX control is using for that but i don't know about ActiveX control much..
can you please give me some reference for getting basic idea for ActiveX control...
Mean how to use it and how to implement it in our web application..

[Frinavale]

Thanks for your quick replay..

Actually i came to know that ActiveX control is using for that but i don't know about ActiveX control much..
can you please give me some reference for getting basic idea for ActiveX control...
Mean how to use it and how to implement it in our web application..

It's kind of complicated....
ActiveX is basically a term that Microsoft came up with for certain object orient programming tools. It is mainly based on COM technology and relies on the Registry to look up other components (... you should look up how this works)...

You should really research ActiveX on your own because there's a lot to cover..

The main thing to know is that ActiveX are components that can be re-used in many applications. They are self-sufficient programs that run and do their thing. They integrate into other programs to serve a purpose.

In the Web Environment:

• They are (recall: small programs) downloaded by the browser and run on the client's computer
• They only work with Internet Explorer.
• They are able to access anything on the computer that they have been downloaded to (and run on)
• They are often considered dangerous because they can be downloaded and executed from the Net and can contain malicious code (such as a virus)...so they may be blocked by your end user.

So, in order for your ASPX web application to be able to use the client computer's devices (such as the web cam) you would write an ActiveX control that communicates with the device and reports back to the Web Application....

I would recommend creating a True ActiveX control (these are not created with the .NET technology...use VB6 or C++ or something) to make it easier to get this working. There's a lot of security and trust issues regarding .NET "ActiveX" controls (since .NET has more security wrapped around it and Windows doesn't trust anything coming from the Internet).

So I hope this gets you started.
I strongly recommend researching AcitveX and COM on your own before you begin to code anything.

-Frinny

[ashish1985s]

It's kind of complicated....
ActiveX is basically a term that Microsoft came up with for certain object orient programming tools. It is mainly based on COM technology and relies on the Registry to look up other components (... you should look up how this works)...

You should really research ActiveX on your own because there's a lot to cover..

The main thing to know is that ActiveX are components that can be re-used in many applications. They are self-sufficient programs that run and do their thing. They integrate into other programs to serve a purpose.

In the Web Environment:

• They are (recall: small programs) downloaded by the browser and run on the client's computer
• They only work with Internet Explorer.
• They are able to access anything on the computer that they have been downloaded to (and run on)
• They are often considered dangerous because they can be downloaded and executed from the Net and can contain malicious code (such as a virus)...so they may be blocked by your end user.

So, in order for your ASPX web application to be able to use the client computer's devices (such as the web cam) you would write an ActiveX control that communicates with the device and reports back to the Web Application....

I would recommend creating a True ActiveX control (these are not created with the .NET technology...use VB6 or C++ or something) to make it easier to get this working. There's a lot of security and trust issues regarding .NET "ActiveX" controls (since .NET has more security wrapped around it and Windows doesn't trust anything coming from the Internet).

So I hope this gets you started.
I strongly recommend researching AcitveX and COM on your own before you begin to code anything.

-Frinny

Is there any other way except ActiveX control..Becoz if it is only workng on IE than what to do for ither browser...

Please suggest me some way to impliment it...

[Frinavale]

Is there any other way except ActiveX control..Becoz if it is only workng on IE than what to do for ither browser...

Please suggest me some way to impliment it...

There is no other way to access devices on the client's computer.
Also, the person will have to have a web camera that your ActiveX control knows the drivers for.

-Frinny

[Plater]

You can use a java applet to accomplish this task, they will work in both FF and IE

[Frinavale]

You can use a java applet to accomplish this task, they will work in both FF and IE

I completely forgot about Java applets :)

[ashish1985s]

You can use a java applet to accomplish this task, they will work in both FF and IE

Thanks for your kindly approch towards this..

Any good article or example for use java applate for a same...So, i can get familier with it..

[ashish1985s]

You can use a java applet to accomplish this task, they will work in both FF and IE

Can i use java applate with asp.net????

[ashish1985s]

I completely forgot about Java applets :)

Can you please suggest me any way to add referance to activeX Class library..

I mean i am creating my own active x object and i need to add one referance to add in tha class library..

Referance is added succesfully but when i am trying to make regester that active x with command prompt using "csc /t:library AClass.cs" than getting error path for WIA is not fount are you missing any assembly referance..

[Frinavale]

Can you please suggest me any way to add referance to activeX Class library..

I mean i am creating my own active x object and i need to add one referance to add in tha class library..

Referance is added succesfully but when i am trying to make regester that active x with command prompt using "csc /t:library AClass.cs" than getting error path for WIA is not fount are you missing any assembly referance..

If I were you, I'd try to first read a text file with the ActiveX control.
Then after I was able to do that I would start trying to get the web cam stuff working.

I'm not sure what you are trying to register. Really your ActiveX control should be a self-contained program that Registers Itself.

Your question is pretty vague so if you need more help you're going to have to post the section of code that's causing the problem or else explain the problem in more detail.

Thanks

-Frinny

[ashish1985s]

If I were you, I'd try to first read a text file with the ActiveX control.
Then after I was able to do that I would start trying to get the web cam stuff working.

I'm not sure what you are trying to register. Really your ActiveX control should be a self-contained program that Registers Itself.

Your question is pretty vague so if you need more help you're going to have to post the section of code that's causing the problem or else explain the problem in more detail.

Thanks

-Frinny

Thanks for your reply..
i mean to ask that how to add referance dll when we want to make a dll..
Hmm any ways it is solved now thanks..