Audio description is available on television in many countries. In the UK, 10% of programs on most channels must be audio described, while Sky Television and Channel 4 have volunteered to do 20%, and some channels do more than that. In the US, the four largest free-to-air networks and five largest cable services must audio describe 4 hours a week. In Canada, the broadcasting of some audio description is now a licence condition, while all programs on AMI-tv (a channel provided on all cable TV services) are audio described.
In New Zealand, a trial of audio description on television took place in 2011, and a regular service commenced later that year. 20 hours of audio described programs are now broadcast each week.
Some audio description is also available on television in Germany, Spain, Italy, Poland, France, Portugal, Austria, Switzerland, Belgium and Korea.