There are 2 main reasons why a video may stream in poor quality:
Strength of Internet connection
The video quality is largely dependent on the strength of your Internet connection. As the strength of your Internet connection improves, so will the video quality, decreasing the amount of buffering you may experience.
Quality of film available
Some older films are not available in HD and may not display as clearly when viewing on larger screens.
Films will play in HD when an HD feed is available and when your Internet connection will allow for it.
If you are viewing a more recent film on a strong Internet connection and the quality is less than desired, please let us know at firstname.lastname@example.org.