Version 4.0 adds support for recompressing and saving video in Motion Wavelet format, which allows for greater flexibility in selecting the quality for client-requested video based on current conditions. GreenStream now offers a third stream with Motion Wavelet video, which adaptively changes to suit current network conditions and client resolution requirements.

Motion Wavelet is an efficient video codec based on wavelet conversion, providing more flexible selection of the quality of video to stream to remote clients. It offers additional options for GreenStream, the company's exclusive technology for dynamically selecting the smallest video stream with sufficient resolution without overloading networks or client CPUs.