Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

WaveFormat cannot be set for WASAPI Loopback Capture

See original GitHub issue

I am trying to record from speaker (loopback recording) in sample rate-8000 and channel-1, problem is code is recording in sample rate-44100 and channel-2, format…

Stream stream = new System.IO.MemoryStream();
waveIn = new WasapiLoopbackCapture();
waveIn.DataAvailable += new EventHandler<NAudio.Wave.WaveInEventArgs>(sourceStream_DataRecord);
waveWriter = new NAudio.Wave.WaveFileWriter(stream, waveIn.WaveFormat);
waveIn.StartRecording();

when i add

waveIn.WaveFormat = new NAudio.Wave.WaveFormat(16000, 1);

it thrown exception

WaveFormat cannot be set for WASAPI Loopback Capture

there is any way to record it in 16000,1 format… actually i dont want it change after complete recording… i want it at start time… please help me on this

Issue Analytics

State:
Created 7 years ago
Comments:20 (8 by maintainers)

Top GitHub Comments

1reaction

markheathcommented, Apr 8, 2017

you are confusing the length of buffers in bytes with the number of samples. In WaveInEventArgs you should use bytes recorded. Divide it by 4 to get number of samples, and then by 2 (assuming stereo) to get number of sample frames.

1reaction

markheathcommented, Mar 20, 2017

take a look at my article on input driven resampling, for one way to do this.

Top Results From Across the Web

c# - NAudio Wasapi recording and conversion

WASAPI always records audio as IEEE floating point samples. So in the recorded buffer you get in the callback, every 4 bytes is...

WaveFormat cannot be set for WASAPI Loopback Capture

I am trying to record from speaker (loopback recording) in sample rate-8000 and channel-1, problem is code is recording in sample rate-44100 ...

WasapiLoopbackCapture.cs

/NAudio/Wave/WaveInputs/WasapiLoopbackCapture.cs ... WaveFormat; }; set { throw new InvalidOperationException("WaveFormat cannot be set for WASAPI Loopback ...

Persistent audio discontinuity in WASAPI loopback capture ...

I am writing a program that captures the output on a Windows device using WASAPI loopback capture. In principle it works correctly, ...

NAudio - RSSing.com

i'm trying to write a simple stereo-mix substitute in c#, but can't seem to get it working even remotely. public void StartRecording() {...