 Called Smooth FF/RW, the creator of the video creates a lower resolution version of the video that is attached to the .mkv file and leveraged whenever a user instructs their player to seek fast forward or rewind.When the user presses fast forward or rewind, the full resolution track is swapped out with the lower resolution version, requiring less resources; when the user presses play, the lower resolution track is instantly swapped out to the full resolution version, which is intended to solve inaccurate seeking issues or a stuttering effect during fast forward and rewind.Episodic content can be packaged into a single file.