Simple software cursor renderer for screen recording

Zero copy screen recording (like kmsgrab in ffmpeg) dont't records cursor. This software renders cursor image over real cursor. This allows to record video with cursor.

Compile

$ make

Run

$ ./softwarecursor-x11 [-s maximum-cursor-size] [-r highlight-radius]

Default maximum cursor size is 32. Default highlight radius is same as cursor size. Highlighting can be disabled with -r 0 argument.

Dependencies

This software uses pure X11 with extensions: Xfixes, XInput2 ad Xext.

Screen recording using ffmpeg

For kmsgrab source is capability cap_sys_admin+ep required. Run following command to add capabilities.

# setcap cap_sys_admin+ep `which ffmpeg`

To record desktop using ffmpeg run:

ffmpeg \
  -v verbose \
  -f pulse -i default \
  -framerate 60 \
  -thread_queue_size 128 \
  -device /dev/dri/card0 \
  -f kmsgrab -i - \
  -af "asetpts=N/SR/TB" \
  -vf 'hwmap=derive_device=vaapi,scale_vaapi=format=nv12' \
  -c:a aac \
  -c:v h264_vaapi \
  video.mkv

Screenshots

Alternatives

• swcursor