public unsafe byte[] ReadImageRgbaColors(float delta)
{
positionInSeconds += delta;
var frameIndex = (int)(positionInSeconds * video.FrameRate);
try
{
AviInterop.BitmapInfoHeader bitmapHeader;
byte[] pixelData = video.GetStreamData(frameIndex, out bitmapHeader);
Bitmap conversionBmp;
fixed(byte *ptr = &pixelData[0])
conversionBmp = new Bitmap(Width, Height, Width * 3, PixelFormat.Format32bppRgb,
(IntPtr)ptr);
var result = new byte[Width * Height * 4];
BitmapData bitmapData = conversionBmp.LockBits(new Rectangle(0, 0, Width, Height),
ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
Marshal.Copy(bitmapData.Scan0, result, 0, result.Length);
conversionBmp.UnlockBits(bitmapData);
return(result);
}
catch
{
return(null);
}
}