how to record sound being played

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From	lou <loushanguan2015@sina.com>
Newsgroups	linux.debian.user
Subject	how to record sound being played
Date	Wed, 29 Sep 2021 11:00:02 +0200
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i have bullseye and want to record sound being played using ffmpeg

https://trac.ffmpeg.org/wiki/Capture/ALSA

$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0

how to use alsaloop?

Could you give me command to record sound being played? Thanks!

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how to record sound being played lou <loushanguan2015@sina.com> - 2021-09-29 11:00 +0200

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