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I'm trying to record in a video the actual content of the framebuffer along the audio currently outputted (alsa). For the video I'm using the following command:

ffmpeg -y -f fbdev -i /dev/fb0 -vsync -1 -c:v libx264 output.avi -r 24

but even after reading the ffmpeg documentation, I'm not sure how to add the audio channel.

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