Documentary videos and clips are available online through Films on Demand.
Choose Collections and a topic or Keyword search
Here's some results if you keyword search for the term Parenting:
Opposing Viewpoints in Context is a database that includes videos within the scope of resources. By selecting "more" by the keyword search box, you can limit to only video results.
Sources include:
PBS NewsHour
Frontline
Meet the Press
NBC Nightly News
NYTimes.com Videos
NOVA
and more
Global Issues in Context also includes videos within it's various resources.
Sources include:
NBC Nightly News
NYTime.com
Associated Press