Hi Carl When I tried replacing this ffmpeg -f x11grab -r 2 -s 1024x768 -i :0.0 -f alsa -ac 1 -i pulse -vcodec libx264 -pix_fmt rgb24 -preset ultrafast -qp 0 output.avi with this ffmpeg -f x11grab -r 2 -s 1024x768 -i :0.0 -f alsa -ac 1 -i pulse -vcodec libx264rgb -pix_fmt rgb24 -preset ultrafast -qp 0 output.avi nothing was recorded. Phil Troy