Youtube Looper is a free Chrome extension developed by Wilker Lúcio. It falls under the category of Browsers and is a subcategory of Add-ons & Tools. This extension allows users to create custom loops in sections of Youtube videos, making it a great tool for music training or any activity that requires repetition.

With Youtube Looper, users can easily create multiple loops for specific sections of videos. These loops are locally stored, so even if users leave the video and come back later, their loops will still be there. The extension also allows users to set a custom playback rate, enabling them to train at their desired speed.

One of the standout features of Youtube Looper is its ability to automatically generate loops for videos that have markers. This makes it even easier for users to practice specific sections of videos without having to manually set the loop points.

To enhance user experience, Youtube Looper offers several pro tips. Users can hold the shift key to adjust time in smaller increments of 100 milliseconds instead of 1 second. Holding shift and clicking on play will start the loop 3 seconds before the loop time. Additionally, users can click on the Speed label to reset the speed to 100% and click on the time numbers to edit the loop points via text, allowing for precise editing.

Overall, Youtube Looper is a valuable tool for anyone looking to create custom loops in Youtube videos. Its user-friendly interface, locally stored loops, and additional features such as custom playback rate and automatic loop generation make it a must-have extension for music training and repetitive video activities.