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How to record webcam with audio on ubuntu 22.04 from cli?

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Command to start recording audio and video (from webcam) using command line. Preferably using ffmpeg

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ffmpeg -f pulse -ac 2 -i default -f v4l2 -i /dev/video0 -t 00:00:20 -vcodec libx264 record.mp4
  • The -f defines the format, pulse for audio and v4l2(Video 4 Linux 2).
  • The -ac defines the audio channels, in this case 2.
  • The -i defines the input, default for audio and the webcam for video.
  • The -t defines the duration of the recording, in this case 20 seconds.
  • The -vcodec defines the output video codec, since it is an mp4 file it is set to libx264 (H.264)
  • Audio should default to AAC so -acodec is not needed.

https://dev.to/ethand91/how-to-record-webcam-video-and-audio-using-ffmpeg-419c

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