Use the handy features of Yuja Media Player.

The Yuja-media player app has a lot of features, but the features  may easily be overlooked. 
With a few clicks you will find these useful features:

• From the down right corner you  can find the cogwheel menu. From there you can speed up or slow the video, select the captions language (if there is where to choose) and add a comment to the video (if the video owner has allowed you to comment).

• You can find a Sidebar menu near the cogwheel icon, where you can find, for example, the personal Notes to add into a specific spot in the video. Notes notes will also work as bookmarks. The same menu also contains video attachments, such as slides, Excel tables etc.