Why AndroidVideoCache? Because there is no sense to download video a lot of times while streaming! AndroidVideoCache allows adding caching support to your VideoView/MediaPlayer, ExoPlayer or any other player with help of a single line! By default AndroidVideoCache uses MD5 of video URL as the file name. But in some cases url is not stable and it can contain some generated parts (e.g. session token). In this case caching mechanism will be broken. To fix it you have to provide your own...