Yes, you want to read https://dt.iki.fi/record-system-output-alsa for an example. -dsr-
to Dan:
it's not easy to follow instruction at https://dt.iki.fi/record-system-output-alsa
after running "modprobe snd-aloop", i can hear sound being
played
no wonder i can hear nothing from recording
to Michael:
why shall i need OSS compatibility module if alsa works? after loading them, they don't help, i can't hear anything from recordingffmpeg -f alsa -i hw:1,1 -c:a flac output.flac command above is from
https://dt.iki.fi/record-system-output-alsa i use it to record, i can't hear anything from recording ~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7