Yet publishers faced technical hurdles, like slow internet connections, that made video ads untenable. So advertising firms like BrightRoll and Tremor Video, along with tech companies like Facebook, began testing video ads. Automatically playing videos went from a rarity a decade ago to a prominent online advertising medium today. Many consumers have complained that autoplay videos are a nuisance. The web browser allows videos to autoplay on 1,000 sites where Google has determined that people have the highest likelihood of wanting to play videos with sound.

Source: New York Times August 01, 2018 18:36 UTC