Video Speed Up (HTML5) is a free Chrome add-on developed by Viacheslav P. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This program aims to enhance the viewing experience of tutorials, lectures, and other HTML5 videos.

With Video Speed Up (HTML5), users can easily accelerate the playback speed of videos by simply pressing the 'S' key. This feature works on most HTML5 videos found on popular websites such as YouTube, VK, and Facebook. The add-on also adds additional functionality to the video player, including rewinding and changing the default playback speed for all videos.

It's worth noting that Video Speed Up (HTML5) is still in development, so not all of its features may be available yet. Nevertheless, this add-on can be a useful tool for those who frequently watch movies, educational videos, and funny clips online.