The number of unique viewers also fell to 173.4 million from 177.9 million in December, according to a report from the internet audience measurement firm, comScore.
Google's video sharing site YouTube accounted for 12.8 billion views and 39.5 per cent of the market. Its traffic in January came out to be 93.9 videos per viewer on an average.
Hulu, another free online video service, stood second with 903 million views, down 11 per cent from the more than 1 billion views it counted in December.
Music video portal Vevo, that was launched in December, stood ninth in comScore's rankings.