CBC website has video and audio clips from as far back as the second decade of the 20th century.
It includes a timely video is on the 1961 census. Interestingly objections to intrusive questions make up a large part of the item, the first suggesting that income information could be obtained from tax returns which is what is being done in 2016.
For the UK there are various programmes, including many news items, archived by the BBC at www.bbc.co.uk/archive/programme/
Mentioned before, now with 80,000 videos, is British Pathe on YouTube.