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.