How to make a Video Player using Native Android that have resolution switching ability like we see in YouTube?

Question

I want to use a video player eg. using ExoPlayer in android app which will support switching of resolution like we see in YouTube.

My API have video files for 480p,720p,

Answer 1

Why you don't convert your mp4 file to hls or mpd streaming format with ffmpeg so you can stream it chunk by chunk and the player will select the best resolution based on his algorithm?