[FFmpeg-user] can't capture from audio speakers, but well from microphone

[Roger Pack]

On 3/10/18, Carl Zwanzig <cpz at tuunq.com> wrote:
> On 3/10/2018 6:01 AM, Phil Forneur wrote:
>> I can't capture from audio speakers, but well from microphone.
>
> Speakers/audio-out aren't considered an input device.
>
> If you're trying to capture what's being played out those speakers, you need
> software to intercept the data on it's way to the output device and direct
> it elsewhere (look for the 'Windows WASAPI' device, see
> http://manual.audacityteam.org/man/tutorial_recording_computer_playback_on_windows.html).

You may be able to install a dshow device to "capture what you  hear"
as it were:
humbly: https://github.com/rdp/virtual-audio-capture-grabber-device