Masa's blog

_ 出力デバイスの確認(ヘッドホン利用時)

$ pacmd list-sinks|egrep name:
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI3__sink>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI2__sink>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI1__sink>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Headphones__sink>

_ 入力デバイスの確認(ヘッドホン利用時)

$ pacmd list-sources|egrep name:
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI3__sink.monitor>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI2__sink.monitor>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI1__sink.monitor>
       name: <alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Headphones__sink.monitor>

_ 出力デバイスの確認(スピーカ利用時)

$ pacmd list-sinks|egrep name:
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI3__sink>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI2__sink>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI1__sink>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Speaker__sink>

_ 入力デバイスの確認(スピーカ利用時)

$ pacmd list-sources|egrep name:
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI3__sink.monitor>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI2__sink.monitor>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__HDMI1__sink.monitor>
       name: <alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source>
       name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Speaker__sink.monitor>

_ キャプチャコマンド

$ ffmpeg -y \
-f pulse -i alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Headphones__sink.monitor \
-f pulse -i alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__Mic1__source \
-filter_complex "[0:a]volume=1.0[a0];[1:a]volume=1.0[a1];[a0][a1]amix=inputs=2:duration=first" \
-f x11grab -framerate 29.97 -i :0.0 -c:v h264 -b:v 1000k -pix_fmt yuv420p \
`date +'/home/m-ito/dwhelper/capture_%Y%m%d%H%M%S.mp4'`

amix=inputs=2:duration=first|shortest|longest