public void setMuted(boolean muted) {
        mMuted = muted;
        if (mVideoTextureJni != null) {
            mVideoTextureJni.setMuted(muted);
        }
    }
Contains a VideoTexture that is set as a background video on the scene.
android/viro_bridge/src/main/java/com/viromedia/bridge/component/VRT360Video.java