I found that there is no way to select the video quality while playing a video from youtube.
While playing video through Normal youtube, it somehow automatically chooses the quality as per the internet connection speed and the video plays smoothly without stopping in between for buffering
But while using youtube leanback, it plays the same video in higher quality and hence it stops many a times in between to buffer. I am not able to make use of youtube leanback due to this.
Any inputs are appreciated.