can't capture from audio speakers, but well from microphone

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can't capture from audio speakers, but well from microphone

Phil Forneur
OS: win10 64bits

I can't capture from audio speakers, but well from microphone.

Thanks

PS F:\> ffmpeg -list_devices true -f dshow -i dummy
ffmpeg version N-90271-g3386be16d5 Copyright (c) 2000-2018 the FFmpeg
developers
  built with gcc 7.3.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv
--enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp
--enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --enable-libspeex --enable-libxvid --enable-libmfx
--enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va
--enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  libavutil      56.  8.100 / 56.  8.100
  libavcodec     58. 14.100 / 58. 14.100
  libavformat    58. 10.100 / 58. 10.100
  libavdevice    58.  2.100 / 58.  2.100
  libavfilter     7. 12.100 /  7. 12.100
  libswscale      5.  0.102 /  5.  0.102
  libswresample   3.  0.101 /  3.  0.101
  libpostproc    55.  0.100 / 55.  0.100
[dshow @ 000002011a53a100] DirectShow video devices (some may be both video
and audio devices)
[dshow @ 000002011a53a100]  "TOSHIBA Web Camera - HD"
[dshow @ 000002011a53a100]     Alternative name
"@device_pnp_\\?\usb#vid_04f2&pid_b307&mi_00#7&366e0267&4&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
[dshow @ 000002011a53a100] DirectShow audio devices
[dshow @ 000002011a53a100]  "Microphone (Realtek High Definition Audio)"
[dshow @ 000002011a53a100]     Alternative name
"@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{2749820B-9C1E-4D53-ADB0-44ACB7A34B4A}"
[dshow @ 000002011a53a100]  "Casque (JBL Soundgear Hands-Free)"
[dshow @ 000002011a53a100]     Alternative name
"@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{77C6E4D8-1CA7-4B5C-B3F9-F1343A65619C}"
dummy: Immediate exit requested
PS F:\>

PS F:\> ffprobe -devices
ffprobe version N-90271-g3386be16d5 Copyright (c) 2007-2018 the FFmpeg
developers
  built with gcc 7.3.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv
--enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp
--enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --enable-libspeex --enable-libxvid --enable-libmfx
--enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va
--enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  libavutil      56.  8.100 / 56.  8.100
  libavcodec     58. 14.100 / 58. 14.100
  libavformat    58. 10.100 / 58. 10.100
  libavdevice    58.  2.100 / 58.  2.100
  libavfilter     7. 12.100 /  7. 12.100
  libswscale      5.  0.102 /  5.  0.102
  libswresample   3.  0.101 /  3.  0.101
  libpostproc    55.  0.100 / 55.  0.100
Devices:
 D. = Demuxing supported
 .E = Muxing supported
 --
 D  dshow           DirectShow capture
 D  lavfi           Libavfilter virtual input device
  E sdl,sdl2        SDL2 output device
 D  vfwcap          VfW video capture
PS F:\>
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Re: can't capture from audio speakers, but well from microphone

Carl Zwanzig
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).

z!
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Re: can't capture from audio speakers, but well from microphone

rogerdpack2
On 3/10/18, Carl Zwanzig <[hidden email]> 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
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