Splits GIF output into multiple files under a size limit. Can also just stop recording the GIF is splitting is disabled.
gif_split: Splits GIFs if they hit the size limit.
Use last filename takes the last GIF's filename, and suffixes the current GIF count into it.
gif_sizelimit: Size limit of each GIF in kibibytes. Minimum is 1024 kibibytes. Zero disables it.
gif_showfilesize: Shows the current recorded GIF's filesize on the screen. This is not recorded into the GIF.
gif_showsplitcount: Shows the GIF split count on the screen. This is not recorded into the GIF.