public Bitmap generateBackdrop()
{
//throw new NotImplementedException();
VideoFileReader reader = new AForge.Video.FFMPEG.VideoFileReader();
reader.Open(fullPath);
int frame = 3000;
if (frame > reader.FrameCount)
{
frame = (int)(reader.FrameCount / 2);
}
for (int i = 0; i < frame; i++)
{
Bitmap b = reader.ReadVideoFrame();
b.Dispose();
//reader.ReadVideoFrame();
}
return(reader.ReadVideoFrame());
}
public static List <double> GetByteArrayDifferencesAlternative(string fileName, Action <int> progress)
{
var listToReturn = new List <double>();
byte[] previous = new byte[] { };
var videoFileReader = new AForge.Video.FFMPEG.VideoFileReader();
videoFileReader.Open(fileName);
Console.WriteLine("frameCount: " + videoFileReader.FrameCount);
var fps = videoFileReader.FrameRate;
var totalSecondsGuess = (double)videoFileReader.FrameCount / (double)videoFileReader.FrameRate;
var sequentialErrors = 0;
for (int i = 0; i < videoFileReader.FrameCount; i++)
{
var skipErrorCode = videoFileReader.ReadVideoFrameAndSkipDecode(i);
if (skipErrorCode == 0)
{
sequentialErrors = 0;
var frame = videoFileReader.ReadVideoFrame();
var byteArray = GetBigMapArray(frame, i);
if (i > 0)
{
var avDis = GetAverageDifferenceFromPrevious(byteArray, previous, 20);
listToReturn.Add(avDis);
}
previous = byteArray;
var fractionChanges = (double)i / (double)totalSecondsGuess;
var percentChanges = 100 * fractionChanges;
progress((int)(Math.Floor(percentChanges)));
}
else
{
if (sequentialErrors <= 5)
{
sequentialErrors++;
skipErrorCode = videoFileReader.ReadVideoFrameAndSkipDecode(i + 1);
listToReturn.Add(0);
}
else
{
break;
}
}
}
progress(100);
return(listToReturn);
}