This is an open-source app that is suitable for all websites. Just move your mouse pointer over the video to switch between frames and choose which one you prefer. You can choose the frames depending on your mood or how you want to view the video on the website. This is very easy to use, you will just need to click the left and right arrows to choose the frames.

Some features include displaying the time, duration, and the number of frames at the moment, selecting a video by simply hovering over it, and just clicking the "i" key to hide the app.