[SOLVED] Can't record audio playing inside virtualbox

Terminal_Meltdown · 07-20-2013, 02:02 PM

Hello all

I am trying to capture audio from an application inside a guest OS inside virtualbox.

As the audio is playing in the VM, I opened a terminal from my host linux pc and issue this command

Code:

ffmpeg -f alsa -i hw:0 -acodec pcm_s16le out.wav

However, I get this error.

[alsa @ 0x8213e20] cannot open audio device hw:0 (Device or resource busy)

My hunch is the VM's sound device is being used.

Is there a work-a-round or it's not possible to capture audio since the VM is using the virtual sound device?

Thanks

Terminal_Meltdown · 07-20-2013, 03:00 PM

Hi

I just want to add my soundcard is working fine in linux and the command I used above works just fine when recording audio from my host machine. The only issue I have is when I want to capture audio that is playing in a VM.

Cheers

Terminal_Meltdown · 07-20-2013, 03:25 PM

Solved by using audacity and choosing Mix as the recording source.

angoliroda · 08-20-2013, 04:28 PM

Hi,
I am a Linux Noobie and suffer from the same problem. I was about to start a thread to find help for this and I am very happy you have found a solution.
I would like to try it too, it's just I have no idea what you mean by saying "using audacity and choosing Mix as the recording source".

I also use audacity and I checked the settings and I have set the recording devices to what I believe should be right and still cannot see what you mean.

Anyway, I am using Linux Mint 13 XFCE 32bit.

Could you please explain your solution?
Thx a lot.
Attila