FFMpegCore/README.md

FFMpegCore

Setup

NuGet:

Install-Package FFMpegCore

A great way to use FFMpeg encoding when writing video applications, client-side and server-side. It has wrapper methods that allow conversion to all web formats: MP4, OGV, TS and methods of capturing screens from the videos.

Configuratoin

The root directory for the ffmpeg binaries can be configured via the ffmpeg.config.json file.

{
  "RootDirectory": ".//FFMPEG//bin"
}

The files that need to be included can be found here: https://github.com/vladjerca/FFMpegCore/tree/master/FFMpegCore/FFMPEG/bin

I can only guarantee an expected behaviour built binaries included, other 3rd party builds could contain API changes rendering an unexpected behaviour.

FFProbe

FFProbe is used to gather video information

static void Main(string[] args)
{
    string inputFile = "G:\\input.mp4";

    // loaded from configuration
    var video = new VideoInfo(inputFile);

    string output = video.ToString();

    Console.WriteLine(output);
}

Sample output:

Video Path : G:\input.mp4
Video Root : G:\\
Video Name: input.mp4
Video Extension : .mp4
Video Duration : 00:00:09
Audio Format : none
Video Format : h264
Aspect Ratio : 16:9
Framerate : 30fps
Resolution : 1280x720
Size : 2.88 Mb

FFMpeg

Convert your video files to web ready formats:

static void Main(string[] args)
{
    string inputFile = "input_path_goes_here";
    var encoder = new FFMpeg();
    FileInfo outputFile = new FileInfo("output_path_goes_here");

    var video = VideoInfo.FromPath(inputFile);

    // easily track conversion progress
    encoder.OnProgress += (percentage) => Console.WriteLine("Progress {0}%", percentage);

    // MP4 conversion
    encoder.Convert(
        video,
        outputFile,
        VideoType.Mp4,
        Speed.UltraFast,
        VideoSize.Original,
        AudioQuality.Hd,
        true
    );
    // OGV conversion
    encoder.Convert(
        video,
        outputFile,
        VideoType.Ogv,
        Speed.UltraFast,
        VideoSize.Original,
        AudioQuality.Hd,
        true
    );
    // TS conversion
    encoder.Convert(
        video,
        outputFile,
        VideoType.Ts
    );
}

Easily capture screens from your videos:

static void Main(string[] args)
{
    string inputFile = "input_path_goes_here";
    FileInfo output = new FileInfo("output_path_goes_here");

    var video = VideoInfo.FromPath(inputFile);

    new FFMpeg()
        .Snapshot(
            video,
            output,
            new Size(200, 400),
            TimeSpan.FromMinutes(1)
        );
}

Join video parts:

static void Main(string[] args)
{
    FFMpeg encoder = new FFMpeg();

    encoder.Join(
        new FileInfo(@"..\joined_video.mp4"),
        VideoInfo.FromPath(@"..\part1.mp4"),
        VideoInfo.FromPath(@"..\part2.mp4"),
        VideoInfo.FromPath(@"..\part3.mp4")
    );
}

Join image sequences:

static void Main(string[] args)
{
    FFMpeg encoder = new FFMpeg();

    encoder.JoinImageSequence(
        new FileInfo(@"..\joined_video.mp4"),
        1, // FPS
        ImageInfo.FromPath(@"..\1.png"),
        ImageInfo.FromPath(@"..\2.png"),
        ImageInfo.FromPath(@"..\3.png")
    );
}

Strip audio track from videos:

static void Main(string[] args)
{
    string inputFile = "input_path_goes_here",
       outputFile = "output_path_goes_here";

    new FFMpeg()
        .Mute(
            VideoInfo.FromPath(inputFile),
            new FileInfo(outputFile)
        );
}

Save audio track from video:

static void Main(string[] args)
{
    string inputVideoFile = "input_path_goes_here",
       outputAudioFile = "output_path_goes_here";

    new FFMpeg()
        .ExtractAudio(
            VideoInfo.FromPath(inputVideoFile),
            new FileInfo(outputAudioFile)
        );
}

Add audio track to video:

static void Main(string[] args)
{
    string inputVideoFile = "input_path_goes_here",
       inputAudioFile = "input_path_goes_here",
       outputVideoFile = "output_path_goes_here";

    FFMpeg encoder = new FFMpeg();

    new FFMpeg()
        .ReplaceAudio(
            VideoInfo.FromPath(inputVideoFile),
            new FileInfo(inputAudioFile),
            new FileInfo(outputVideoFile)
        );
}

Add poster image to audio file (good for youtube videos):

static void Main(string[] args)
{
    string inputImageFile = "input_path_goes_here",
       inputAudioFile = "input_path_goes_here",
       outputVideoFile = "output_path_goes_here";

    FFMpeg encoder = new FFMpeg();

    ((Bitmap)Image.FromFile(inputImageFile))
        .AddAudio(
            new FileInfo(inputAudioFile),
            new FileInfo(outputVideoFile)
        );

    /* OR */

    new FFMpeg()
        .PosterWithAudio(
            inputImageFile,
            new FileInfo(inputAudioFile),
            new FileInfo(outputVideoFile)
        );
}

Control over the 'FFmpeg' process doing the job:

static void Main(string[] args)
{
    string inputVideoFile = "input_path_goes_here",
       outputVideoFile = "input_path_goes_here";

    FFMpeg encoder = new FFMpeg();

    // start the conversion process
    Task.Run(() => {
        encoder.Convert(new VideoInfo(inputVideoFile), new FileInfo(outputVideoFile));
    });

    // stop encoding after 2 seconds (only for example purposes)
    Thread.Sleep(2000);
    encoder.Stop();
}

Enums

Video Size enumeration:

public enum VideoSize
{
    HD,
    FullHD,
    ED,
    LD,
    Original
}

Speed enumeration:

public enum Speed
{
    VerySlow,
    Slower,
    Slow,
    Medium,
    Fast,
    Faster,
    VeryFast,
    SuperFast,
    UltraFast
}

Audio codecs enumeration:

public enum AudioCodec
{
        Aac,
        LibVorbis
}

Audio quality presets enumeration:

public enum AudioQuality
{
        Ultra = 384,
        Hd = 192,
        Normal = 128,
        Low = 64
}

Video codecs enumeration:

public enum VideoCodec
{
        LibX264,
        LibVpx,
        LibTheora,
        Png,
        MpegTs
}

ArgumentBuilder

Custom video converting presets could be created with help of ArgumentsContainer class:

var container = new ArgumentsContainer();
container.Add(new VideoCodecArgument(VideoCodec.LibX264));
container.Add(new ScaleArgument(VideoSize.Hd));

var ffmpeg = new FFMpeg();
var result = ffmpeg.Convert(container, new FileInfo("input.mp4"), new FileInfo("output.mp4"));

Other availible arguments could be found in FFMpegCore.FFMPEG.Arguments namespace.

If you need to create your custom argument, you just need to create new class, that is inherited from Argument, Argument<T> or Argument<T1, T2> For example:

public class OverrideArgument : Argument
{
    public override string GetStringValue()
    {
        return "-y";
    }
}

Contributors

License

Copyright © 2018, Vlad Jerca. Released under the MIT license.