BufferDurations
constructor(minBufferDuration: Duration = DefaultLoadControl.DEFAULT_MIN_BUFFER_MS.milliseconds, maxBufferDuration: Duration = DefaultLoadControl.DEFAULT_MAX_BUFFER_MS.milliseconds, bufferForPlayback: Duration = DefaultLoadControl.DEFAULT_BUFFER_FOR_PLAYBACK_MS.milliseconds, bufferForPlaybackAfterRebuffer: Duration = DefaultLoadControl.DEFAULT_BUFFER_FOR_PLAYBACK_AFTER_REBUFFER_MS.milliseconds)
Create empty Buffer durations