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#1 Posted : Tuesday, February 27, 2007 12:54:54 AM(UTC)
nimeshpanda

Groups: Registered
Posts: 1


Hi All,

I have a requirement for my project where i want to capture video as well as screen and merge both the images to one and produce a wmv file format. Below is the description for the same:-

Video input:

Screen A-USB Webcam or DV camera. To record the presenter

 

Screen input:

 

Screen B-Screen capture of a live PowerPoint slide show (including all animations in real time in a screencam recording)

 

Program output:

 

Instructor-over-PowerPoint video (Scr A + B) saved in WMV format

 

The program is to developed in .net . Please provide me any support provided  by Lead Tools or if any body can provide me consultancy for the same then you are most welcome.

 

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#2 Posted : Thursday, March 1, 2007 10:53:09 AM(UTC)

Adnan Ismail  
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Posts: 3,034

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You can do this as follows:
1. Have the presenter stand in front of a suitable screen
that's different from all colors in his or her clothes and body (e.g. blue screen or green screen).
2. Use our LEADTOOLS Multimedia toolkit to capture from both the live camera and the screen capture using 2 ltmmCapture controls.


3. Take a frame each from both recordings and pass both
frames to our LEADTOOLS Raster Imaging Pro toolkit, and perform merging of the 2 images excluding the background screen color.




4. Put the resulting frame back into one of the ltmmCapture controls and make it save the WMV file.




If you want to do all this in real time, you will need fast
computers and might not be able to do it at a very high screen resolution. If
you want to do it after recording in a second step (you have more time), you will have fewer restrictions.












A good starting point is our demo that takes video frames
and does image processing with them using our .NET toolkit. This demo is installed in the following 2 folders:
C# version:
LEADTOOLS Multimedia 15.0\Examples\Ltmm\Dotnet\CS\DrawOnVideo
VB.NET version:
LEADTOOLS Multimedia 15.0\Examples\Ltmm\Dotnet\VB\DrawOnVideo

 
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