c# - Extract wav file from video file

Question

I am developing an application in which I need to extract the audio from a video. The audio needs to be extracted in .wav format but I do not have a problem with the video format. Any format will do, as long as I can extract the audio in a wav file.

Currently I am using Windows Media Player COM control in a windows form to play the videos, but any other embedded player will do as well.

Any suggestions on how to do this? Thanks

Answer 1

If you want to do this with C#, take a look at NAudio library. It can analyze the audio format (like FFMpeg) and also provide the audio stream. Here's one example.

Snippet from the sample:

using NAudio.Wave;
using System.IO;

...

// contentAsByteArray consists of video bytes
MemoryStream contentAsMemoryStream = new MemoryStream(contentAsByteArray);

using (WaveStream pcmStream =
    WaveFormatConversionStream.CreatePcmStream(
        new StreamMediaFoundationReader(contentAsMemoryStream)))
{
    WaveStream blockAlignReductionStream = new BlockAlignReductionStream(pcmStream);

    // Do something with the wave stream
}