I've been waiting years for a video bookmarks extension for FF, and this is exactly what I've been looking for, with one exception - I'm looking for one that works on any HTML5 video, not just YouTube. I don't suppose that it could be modified to support HTML5 video across the board, could it? IDK what all it would entail, but I ask because the Chrome extension that first introduced me to the video bookmarking concept (Video Bookmarks Controller) and ultimately leading to my complete dependence on it 😂 isn't available for FF. It was also created specifically with YouTube in mind and to this day still has a few extra features/perks exclusive to YT, but at some point the developer added support for any video site using HTML5. Your extension and it are very similar. In fact, without having used yours extensively yet, the only pronounced difference I spot is that you utilize local device storage while it uses a dedicated site/server that also allows for managing the saved bookmarks hosted there. Anyway, obviously you should do what you wish, but I'd be beyond appreciative if you did something similar with this add-on, i.e., chose to add support for any HTML5 video.

Edit - I've discovered that it's possible in some cases to convert a Chrome extension to FF add-on, so I'm going to try that but sadly the simpler automated process via add-on appear to be broken so I'll need to do it manually

This is incredibly useful for learning guitar and better than the chrome equivalent. Thank you!

Plain & Simple - Works like a charm. Great for musical instruments tutorials, to do complex parts over-and-over again. Thxs!!!

Thank you

The Addon doesnt really work for me, there is no buttons for looping for me. Edit: Nevermind im just dumb. I forgot too reload the webpage

This is perfect! Now I can include those 8-hour videos in my playlists, without listening to all 8 hours... Usually I only want to hear 15 - 30 minutes of the video. Thank you so much!

works, but it would improve the functionality a lot if i could select the times to loop from the current time on the video. i don't know. i've been trying for the last hour to stitch together a replacement for mirrortube on chrome and though i guess i've done it, it just doesn't function nearly as smoothly.
edit: by smoothly i just meant like. going through the motions of use, if that makes sense. it isn't a problem with the extension. have a nice day!

I often listen to songs on YouTube on repeat for hours (apparently this is an ADHD trait) but some videos have intros/outros you want to cut off. This can do it via a simple interface. Looper For YouTube on Chrome has a slider which would be nice to add but I am just fine with typing in the timestamps, not a biggie.