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:\>