Who to Credit - Film or Video
The director should be credited as the author of a film. If the director is unknown, someone in a similar role, such as a producer and/or writer, can be credited. To clarify what role the person has in the production, their job title such as Director is put after their name in round brackets if the job title is known.
Who to Credit - Streaming Video from a Website
For videos from websites such as YouTube or Vimeo, credit the person who posted the content. If a real name is provided, use that followed by the person's user name in square brackets. If the real name of the person who posted the content is not known, just use their user name without brackets.
Note: It is not necessary to specify how you watched a film or video (e.g. motion picture, DVD, streaming online).