change buffer size

Buffering for HTML5 video is handled automatically by the browser and video.js doesn’t have any methods for controlling it. The only thing you can change is how the video is preloaded. The options are “none,” “metadata,” or “auto.” Auto loads the most video, but the results depend on the browser. You can set the preload for all videos in the plugin settings page or for individual videos using the preload attribute in the KGVID shortcode.