#About Speed Here

ExoPlayer

ExoPlayer is an application level media player for Android. It provides an alternative to Android’s MediaPlayer API for playing audio and video both locally and over the Internet. ExoPlayer supports features not currently supported by Android’s MediaPlayer API, including DASH and SmoothStreaming adaptive playbacks. Unlike the MediaPlayer API, ExoPlayer is easy to customize and extend, and can be updated through Play Store application updates.

Documentation

The developer guide provides a wealth of information to help you get started.
The class reference documents the ExoPlayer library classes.
The release notes document the major changes in each release.

Using ExoPlayer

The easiest way to get started using ExoPlayer is to add it as a gradle dependency. You need to make sure you have the jcenter repository included in the build.gradle file in the root of your project:

repositories {
    jcenter()
}

Next, include the following in your module's build.gradle file:

compile 'com.google.android.exoplayer:exoplayer:rX.X.X'

where rX.X.X is the your preferred version. For the latest version, see the project's Releases. For more details, see the project on Bintray.

Developing ExoPlayer

Project branches

The project has dev-vX and release-vX branches, where X is the major version number.
Most development work happens on the dev-vX branch with the highest major version number. Pull requests should normally be made to this branch.
Bug fixes may be submitted to older dev-vX branches. When doing this, the same (or an equivalent) fix should also be submitted to all subsequent dev-vX branches.
A release-vX branch holds the most recent stable release for major version X.

Using Android Studio