/// <summary>
/// Class describing a video file, manipulated using VLC libraries
/// </summary>
/// <param name="fileName"></param>
public Video(string fileName)
{
FileInfo file = new FileInfo(fileName);
bool initialized = false;
if (!VideoTools.checkVlcLib())
{
throw new Exception("Cannot find the VLC library... Please make sure you're running this application from inside your PinUp folder...");
}
try
{
VlcMediaPlayer mediaPlayer = new VlcMediaPlayer(VideoTools.GetLibVlcLocation(), VideoTools.GetVlcOptionsHeadless(0));
initialized = true;
mediaPlayer.SetMedia(file);
mediaPlayer.GetMedia().Parse();
this.Duration = mediaPlayer.GetMedia().Duration.TotalSeconds;
this.Width = (int)mediaPlayer.GetMedia().TracksInformations[0].Video.Width;
this.Height = (int)mediaPlayer.GetMedia().TracksInformations[0].Video.Height;
this.FileName = fileName;
mediaPlayer.Dispose();
}
catch (Exception exc)
{
if (!initialized)
{
throw (new Exception("Cannot initialize VLC player library: " + exc.Message));
}
else
{
throw (new Exception("VLC library error: " + exc.Message));
}
}
}
/// <summary>
/// Extract a still frame from a video
/// </summary>
/// <param name="startAt"></param>
/// <returns></returns>
public Bitmap GetFrame(double startAt)
{
FileInfo file = new FileInfo(this.FileName);
FileInfo file2 = new FileInfo(Path.GetTempPath() + "\\snapshot.png");
if (File.Exists(file2.FullName))
{
File.Delete(file2.FullName);
}
VlcMediaPlayer mediaPlayer = new VlcMediaPlayer(VideoTools.GetLibVlcLocation(), VideoTools.GetVlcOptionsHeadless(startAt));
try
{
bool done = false;
bool takesnapshot = true;
mediaPlayer.PositionChanged += (sender, e) =>
{
if (takesnapshot)
{
takesnapshot = false; // avoid re-entry
mediaPlayer.TakeSnapshot(file2);
done = true;
}
};
mediaPlayer.SetMedia(file);
mediaPlayer.Play();
DateTime start = DateTime.UtcNow;
while (!done) // wait for video to start, timeout 3 seconds
{
if ((DateTime.UtcNow - start).TotalMilliseconds >= 3000)
{
throw (new Exception("Error when starting video!"));
}
}
mediaPlayer.Dispose();
}
catch (Exception exc)
{
mediaPlayer.Dispose();
throw (new Exception("VLC library error:" + exc.Message));
}
if (File.Exists(file2.FullName))
{
Bitmap pic = new Bitmap(file2.FullName);
return(pic);
}
else
{
throw (new Exception("Error while extracting snapshot from video!"));
}
}