[LAU] FFMPEG - Recording sound from jack

[Chris Caudle]

On Tue, August 8, 2017 10:29 am, list wrote:
> Sure i've already done an  :
> ffmpeg -f jack -ac 2  -i hw:1 -f x11grab -s 1920x1080 -r 25 -i :0.0
> nul.mp4

The input descriptor you used, "-i hw:1" is the format for describing ALSA
device numbers.

I will repeat my earlier admonition to read the ffmpeg man page to see how
you connect jack ports to ffmpeg.
https://www.ffmpeg.org/ffmpeg-devices.html#jack

-- 
Chris Caudle