var inputFile = new MediaFile (@"C:\Path\To_Video.flv");
var outputFile = new MediaFile (@"C:\Path\To_Save_Image.jpg");

var ffmpeg = new FFmpeg.NET.Engine.FFmpeg();
// Saves the frame located on the 15th second of the video.
var options = new ConversionOptions { Seek = TimeSpan.FromSeconds(15) };
ffmpeg.GetThumbnail(inputFile, outputFile, options);

var inputFile = new MediaFile (@"C:\Path\To_Video.flv");

var ffmpeg = new FFmpeg.NET.Engine.FFmpeg();
var metadata = ffmpeg.GetMetadata(inputFile);

Console.WriteLine(metadata.Duration);

var inputFile = new MediaFile (@"C:\Path\To_Video.flv");
var outputFile = new MediaFile (@"C:\Path\To_Save_New_Video.mp4");

var ffmpeg = new FFmpeg.NET.Engine.FFmpeg();
ffmpeg.Convert(inputFile, outputFile);

var inputFile = new MediaFile (@"C:\Path\To_Video.flv");
var outputFile = new MediaFile (@"C:\Path\To_Save_New_DVD.vob");

var conversionOptions = new ConversionOptions
{
    Target = Target.DVD, 
    TargetStandard = TargetStandard.PAL
};

var ffmpeg = new FFmpeg.NET.Engine.FFmpeg();
ffmpeg.Convert(inputFile, outputFile, conversionOptions);

var inputFile = new MediaFile (@"C:\Path\To_Video.flv");
var outputFile = new MediaFile (@"C:\Path\To_Save_New_Video.mp4");

var conversionOptions = new ConversionOptions
{
    MaxVideoDuration = TimeSpan.FromSeconds(30),
    VideoAspectRatio = VideoAspectRatio.R16_9,
    VideoSize = VideoSize.Hd1080,
    AudioSampleRate = AudioSampleRate.Hz44100
};

var ffmpeg = new FFmpeg.NET.Engine.FFmpeg();
ffmpeg.Convert(inputFile, outputFile, conversionOptions);

var inputFile = new MediaFile (@"C:\Path\To_Video.flv");
var outputFile = new MediaFile (@"C:\Path\To_Save_ExtractedVideo.flv");

var ffmpeg = new FFmpeg.NET.Engine.FFmpeg();
var options = new ConversionOptions();

// This example will create a 25 second video, starting from the 
// 30th second of the original video.
//// First parameter requests the starting frame to cut the media from.
//// Second parameter requests how long to cut the video.
options.CutMedia(TimeSpan.FromSeconds(30), TimeSpan.FromSeconds(25));
ffmpeg.Convert(inputFile, outputFile, options);

public void StartConverting()
{
    var inputFile = new MediaFile (@"C:\Path\To_Video.flv");
    var outputFile = new MediaFile (@"C:\Path\To_Save_New_Video.mp4");    

    var ffmpeg = new FFmpeg.NET.Engine.FFmpeg();
    ffmpeg.Progress += OnProgress;
    ffmpeg.Data += OnData;
    ffmpeg.Error += OnError;
    ffmpeg.Complete += OnComplete;
    ffmpeg.Convert(inputFile, outputFile);
}

private void OnProgress(object sender, ConversionProgressEventArgs e)
{
    Console.WriteLine("[{0} => {1}]", e.Input.FileInfo.Name, e.Output.FileInfo.Name);
    Console.WriteLine("Bitrate: {0}", e.Bitrate);
    Console.WriteLine("Fps: {0}", e.Fps);
    Console.WriteLine("Frame: {0}", e.Frame);
    Console.WriteLine("ProcessedDuration: {0}", e.ProcessedDuration);
    Console.WriteLine("Size: {0} kb", e.SizeKb);
    Console.WriteLine("TotalDuration: {0}\n", e.TotalDuration);
}

private void OnData(object sender, ConversionDataEventArgs e)
{
    Console.WriteLine("[{0} => {1}]: {2}", e.Input.FileInfo.Name, e.Output.FileInfo.Name, e.Data);
}

private void OnComplete(object sender, ConversionCompleteEventArgs e)
{
    Console.WriteLine("Completed conversion from {0} to {1}", e.Input.FileInfo.FullName, e.Output.FileInfo.FullName);
}

private void OnError(object sender, ConversionErrorEventArgs e)
{
    Console.WriteLine("[{0} => {1}]: Error: {2}\n{3}", e.Input.FileInfo.Name, e.Output.FileInfo.Name, e.Exception.ExitCode, e.Exception.InnerException);
}