Create a C# console application in Visual Studio

This topic describes the steps needed to configure a C# console application in Visual Studio.

Create the Visual Studio project

  1. Create a C# console application in Visual Studio 2015.
  2. Download the 64 bit version of AVBlocks for .NET. The file you need will have a name similar to - the version number may differ.
  3. Unzip in a location of your choice, then copy the file AVBlocks.clr4.x64.dll, AVBlocks.clr4.x64.xml and AVBlocks64.dll from the lib directory to the project's directory.

    Note: Technically you do not need the AVBlocks.clr4.x64.xml. The XML file contains the AVBlocks API documentation which Visual Studio understands and will show to you while you are coding.

  4. Switch to the project in Visual Studio and add a reference to AVBlocks.clr4.x64.dll.
  5. Add the AVBlocks64.dll to your project simply as a file, open file properties, and set the 'Copy to Output Directory' to 'Copy if newer', so it is copied to the output directory automatically. The AVBlocks.clr4.x64.dll needs AVBlocks64.dll and will not work without it.
  6. In Visual Studio, select 'BUILD | Configuration Manager' from the menu, then add the 'x64' platform to the solution platforms.
  7. Replace the contents of Program.cs with this code:
using PrimoSoftware.AVBlocks;

namespace SimpleConverter
    class Program
        static void Main(string[] args)

            var inputInfo = new MediaInfo() {
                InputFile = "Wildlife.wmv"

            if (inputInfo.Load()) {
                var inputSocket = MediaSocket.FromMediaInfo(inputInfo);
                var outputSocket = MediaSocket.FromPreset(Preset.iPad_H264_720p);
                outputSocket.File = "Wildlife.mp4";

                using (var transcoder = new Transcoder()) {

                    if (transcoder.Open())


Run the application

  1. Download the Wildlife.wmv HD movie from the Internet Archive and save it in bin\x64\Debug under the project's directory.
  2. Run the application in Visual Studio. Wait a few seconds for the Transcoder to finish. The converted file Wildlife.mp4 will be in the bin\x64\Debug directory.


  • You may get a 'DllNotFoundException' exception: Unable to load DLL 'AVBlocks64.dll': The specified module could not be found. To fix this, copy the file 'AVBlocks64.dll' to bin\x64\Debug under the project's directory.
  • Transcoder.Open may fail if there is already a file Wildlife.mp4 in the bin\x64\Debug directory. Delete Wildlife.mp4 to solve this.

Last updated on April 8th, 2017 02:55:54 PM