Change Video Signal Format with DirectX library

• Download demo project and source - 297 Kb

Introduction

I posted an article DirectX Video Stream and Frame Capture a few months before, and I got a few feedbacks. Please refer to the article for more information. As a response to many requests, I added again some examples on how to use the video capture library.

In this example, I added a sample code to change the video format from NTSC to PAL and vice versa. A code piece to change the brightness, and the old, grasp a frame from video and finally save to a video file.

Actually this example is prepared in a rush, so I would hope anyone to send me any comments so that I can update it again. Thanks.

Using the code

To change to PAL_B standard:

private void button2_Click(object sender, System.EventArgs e)
{
    capture.VideoFormat= DShowNET.AnalogVideoStandard.PAL_B;
}

To set brightness:

void button2_Click_1(object sender, System.EventArgs e)
{
    VideoProcAmp_prop Brightness;
    Brightness= 
      capture.Get_VideoProcAmpProp(
      DShowNET.VideoProcAmpProperty.VideoProcAmp_Brightness);
    capture.Set_VideoProcAmpProp(
      DShowNET.VideoProcAmpProperty.VideoProcAmp_Brightness,5106);
}

To capture a frame:

void button1_Click(object sender, System.EventArgs e)
{
    capture.FrameEvent2 += new Capture.HeFrame(CaptureDone);
    capture.GrapImg();
}

Points of Interest

Thanks for everyone who gave me suggestions for adding these functions to the code. I am sorry that this is not a robust sample, I created it just for demo purpose. Please tell me if you have any questions and suggestions.

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here