Microsoft Corp has launched a new online service in 20 countries which will allow users to watch video clips at the same time as a network of friends and chat via Windows Live Messenger.

The new service called Messenger TV will offer a range of clips on MSN Video including MTV shows and music clips from providers such as Sony BMG.

The firm hopes the ability to watch clips with friends on different computers will create a new social experience and attract users who already spend hours on social networks.