Simple Audio Converter#

How to build a simple audio converter in C#.

Audio Input#

As audio input we use the kahvi011_kennybeltrey-hydrate.mp3 file from the Internet Archive. The original audio format is MPEG Audio Layer 3, 44.1 KHz, Joint Stereo, 136 Kbps, Variable Bit Rate

Code#

The following code snippet will take any audio format supported by AVBlocks and will convert it to AAC audio in an ADTS container (*.AAC).

using PrimoSoftware.AVBlocks;

namespace SimpleConverter
{
    class Program
    {
        static void Main(string[] args)
        {
            Library.Initialize();

            var inputInfo = new MediaInfo() {
                InputFile = "kahvi011_kennybeltrey-hydrate.mp3"
            };

            if (inputInfo.Load()) {
                var inputSocket = MediaSocket.FromMediaInfo(inputInfo);
                var outputSocket = MediaSocket.FromPreset(Preset.Audio.Generic.AAC);
                outputSocket.File = "kahvi011_kennybeltrey-hydrate.aac";

                using (var transcoder = new Transcoder()) {
                    transcoder.Inputs.Add(inputSocket);
                    transcoder.Outputs.Add(outputSocket);

                    if (transcoder.Open())
                    {
                        transcoder.Run();
                        transcoder.Close();
                    }
                }
            }

            Library.Shutdown();
        }
    }
}

How to run#

Follow the steps to create a C# console application in Visual Studio but in Program.cs use the code from this article.

Download the kahvi011_kennybeltrey-hydrate.mp3 song from the Internet Archive and save it in bin\x64\Debug under the project’s directory.

Run the application in Visual Studio. Wait a few seconds for the Transcoder to finish. The converted file kahvi011_kennybeltrey-hydrate.aac will be in the bin\x64\Debug directory.