int RecordingLength(string file)
{
// Get the length of the video in seconds. We will run the "ffmpeg -i" command and parse the standard output.
// The line containing "Duration: ...." will contain the duration in HH:MM:SS format.
// We will convert this to a TimeSpan object and then obtain total seconds.
RunCommand runCommand = new RunCommand();
string inputFileQuoted = "\"" + file + "\"";
// Ffmpeg outputs all of its logging data to stderr,
// to leave stdout free for piping the output data to some other program or ffmpeg instance.
string command = "ffmpeg -i " + inputFileQuoted + " 2>&1";
string result = runCommand.ExecuteCmd(command);
int y = result.IndexOf("Duration: ");
int z = result.IndexOf(".", y);
string duration = result.Substring(y + 10, 8);
TimeSpan time = TimeSpan.Parse(duration);
int videoLength = (int)time.TotalSeconds; // length of video in seconds
return(videoLength);
}
public int Split(string inputFile, string outputFolder, int segmentSize, int segmentOverlap)
{
RunCommand runCommand = new RunCommand();
Directory.CreateDirectory(outputFolder);
int videoLength = RecordingLength(inputFile);
int numberOfSections = videoLength / segmentSize;
int mod = videoLength % segmentSize;
// If the last segment is greater than 1/2 segment size, put it in it's own segment.
if (mod > (segmentSize / 2))
{
numberOfSections++;
}
//string inputFilename = Path.GetFileNameWithoutExtension(inputFile);
// Create subfolders part01, part02, part03, etc
for (int x = 1; x <= numberOfSections; x++)
{
int start = (x - 1) * segmentSize;
string segmentFolder = outputFolder + $"\\part{x:D2}";
Directory.CreateDirectory(segmentFolder);
string outputFile = segmentFolder + "\\" + "ToFix.mp4";
if (x < numberOfSections)
{
ExtractPart(inputFile, outputFile, start, segmentSize + segmentOverlap);
}
else
{
ExtractPart(inputFile, outputFile, start); // extract to end
}
}
return(numberOfSections);
}