FFmpeg record my desktop

screencast.sh

#!/bin/sh

SCREEN_SIZE="1920x1080"
ORIGIN="0,0"
# For dual screen setup where projected is on the right side of the desktop:
#ORIGIN="1920,0"

ffmpeg -vaapi_device /dev/dri/renderD128 -framerate 25 -video_size $SCREEN_SIZE \
       -f x11grab -i :0+$ORIGIN -f pulse -ac 2 -i default -vf 'format=nv12,hwupload' \
       -c:v h264_vaapi -c:a aac screencast-$(date +%H%M%S).mkv
      
## Variant without HW accelerated encoding
#ffmpeg -framerate 25 -video_size $SCREEN_SIZE \
#       -f x11grab -i :0+$ORIGIN -f pulse -ac 2 -i default \
#       -c:v libx264 -c:a aac screencast-$(date +%H%M%S).mkv