With the arrival of Android 5.0 Lollipop,a new video player has been introduced to make streaming from youtube uninterrupted and flexible. Before lollipop, the media player used is the YouTube's default MediaPlayer, but with the emergence of Android 5.0 Lollipop, we have a flexible player in Youtube ExoPlayer.

What's the difference between MediaPlayer and ExoPlayer, and what benefits does the latter bring about? Simply put, the default player, MediaPlayer, is not very flexible - after you provide it with a URL link for a desired video, it does its best to stream it and play it as fast as it can. However, things can be done a lot better, and that's exactly what ExoPlayer's role is. This newcomer is utterly more flexible, allowing users more control on the different stages.
I have a good news for you, you can easily switch your YouTube app from MediaPlayer to ExoPlayer quite easy. Provided that your devices is rooted!
How do you go about it? check it out here http://donfolu..com/2015/01/how-to-speed-up-and-improve-your.html.