On Tue, Apr 07, 2020 at 11:54:35AM +0000, Ekaitz Zarraga wrote: > Hi, > > I'm trying to make a screencast with ffmpeg and I'm having issues. > > I had a screen recording script on the past, based on alsa, but it's not > working in guix because it looks like ffmpeg wasn't compiled with alsa. Is > that true? Is there something I missing to activate alsa on ffmpeg? > > > This is the command I was running: > > ffmpeg \ > -y -f x11grab -draw_mouse 1 -framerate 25 -video_size 1920x1080 -i > $DISPLAY \ > -f alsa -ac 2 -i default \ > -pix_fmt yuv420p -c:v libx264 -preset veryfast \ > -c:a libmp3lame -q:v 1 -s 1920x1080 -f matroska \ > output.mkv
I tried this but it failed with ":0: Invalid argument". That's the $DISPLAY variable. Do you know what it should say?
