How to get duration of Audio/Video from URL using NAudio and WebClient

In this post I am going to explain how the NAudio WaveFileReader class can be used to get wave audio length.

NAudio is an open source .NET audio and MIDI library, containing dozens of useful audio related classes intended to speed development of audio related utilities in .NET.

Below are the simple steps to get audio duration of any audio or video file.

·         Install NAudio using nuget package manager console using below command in your .Net Application.

·          

PM> Install-Package NAudio

·         In your c# code download the file using web client:

WebClient wc = new WebClient();

   var bytes= wc.DownloadData(“Your AudioFile URL”) ;

Stream downloadedStream= new MemoryStream(bytes);

NAudio.Wave.WaveFileReader reader= new   NAudio.Wave.WaveFileReader(downloadedStream)

Var audioLength=reader.TotalTime; //we can get audio duration here…

Apart from the audio length feature NAudio has many more contrasting features.

NAudio Features

·         Play back audio using a variety of APIs

o    WaveOut

o    DirectSound

o    ASIO

o    WASAPI (Windows Vista and above)

·         Decompress audio from different Wave Formats

o    MP3 decode using ACM or DMO codec

o    AIFF

o    G.711 mu-law and a-law

o    ADPCM

o    G.722

o    Speex (using NSpeex)

o    SF2 files

o    Decode using any ACM codec installed on your computer

·         Record audio using WaveIn, WASAPI or ASIO

·         Read and Write standard .WAV files

·         Mix and manipulate audio streams using a 32 bit floating mixing engine

·         Extensive support for reading and writing MIDI files

·         Full MIDI event model

·         Basic support for Windows Mixer APIs

·         A collection of useful Windows Forms Controls

·         Some basic audio effects, including a compressor