Video Tuner is a free Chrome extension developed by callum189. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory. This extension allows users to adjust the pitch of HTML5 videos, compensating for slightly out-of-tune instruments like a piano.

With Video Tuner, you can now play along with YouTube videos using your old janky piano without the need for professional tuning. The extension also offers the ability to change the playback speed and pitch, even if not related to an instrument.

Although the extension has been updated to fix most issues, there have been some reports of it interfering with website CSS. If you notice any abnormalities on your favorite websites, it is recommended to disable the extension when not in use.

As for future updates, the developer plans to integrate the transposition option into the instrument feature, allowing users to simultaneously adjust both semitones and instrument-based pitch.

Video Tuner is a handy tool for musicians and enthusiasts who want to play along with their favorite videos while compensating for instrument tuning discrepancies.