Better Tumblr Video is a free Chrome extension developed by jtank4 Better-Tumblr-Video Dev that replaces Tumblr's video player with a player that has a volume bar. The extension uses Plyr, a video player with volume control, or Chrome's video player (depending on user preference).

To select your preferred video player, simply left-click on the Better-Tumblr-Video icon located in the top right corner of Chrome. However, it should be noted that the extension may not work on all pages. Some pages on Tumblr, such as the search page and certain user pages, are completely enclosed in an iframe, which prevents the extension from detecting any videos on the page.

The extension requires permission to access storage in order to store your preferred default video volume. The source code can be found on GitHub, and a change log is available for users to review. Overall, Better Tumblr Video is a useful tool for those who want to improve their video playback experience on Tumblr.