我已经在使用Media Foundation API(感谢MFManagedEncode,http://blogs.msdn.com/b/mf/archive/2010/02/18/mfmanagedencode.aspx)将wav转换为aac.我还没有完全了解它是如何工作的,但它确实有效 – 谢天谢地.

现在我发现很难以其他方式转码,即使它有一个MF编解码器(AAC解码器).我找不到如何使用它的例子,我发现它的MSDN文档至少可以说是含糊不清的;谁有运气呢？

一个C#包装器是理想的.

TIA.

解决方法:

我成功地使用NAudio进行任何音频处理和抽象.它以NuGet的形式提供.它有Media Foundation(和其他)的包装编码器.

以下是使用NAudio编码为AAC并返回WAV的示例：

using System;
using NAudio.Wave;

namespace ConsoleApplication11
{
    class Program
    {
        static void Main(string[] args)
        {
            // convert source audio to AAC
            // create media foundation reader to read the source (can be any supported format, mp3, wav, ...)
            using (MediaFoundationReader reader = new MediaFoundationReader(@"d:\source.mp3"))
            {
                MediaFoundationEncoder.EncodeToAac(reader, @"D:\test.mp4");
            }

            // convert "back" to WAV
            // create media foundation reader to read the AAC encoded file
            using (MediaFoundationReader reader = new MediaFoundationReader(@"D:\test.mp4"))
            // resample the file to PCM with same sample rate, channels and bits per sample
            using (ResamplerDmoStream resampledReader = new ResamplerDmoStream(reader, 
                new WaveFormat(reader.WaveFormat.SampleRate, reader.WaveFormat.BitsPerSample, reader.WaveFormat.Channels)))
            // create WAVe file
            using (WaveFileWriter waveWriter = new WaveFileWriter(@"d:\test.wav", resampledReader.WaveFormat))
            {
                // copy samples
                resampledReader.CopyTo(waveWriter);
            }
        }
    }
}