YouTube is to begin a two-day trial of live video streaming in the US.
The Google-owned video-sharing site is working with four broadcasters in the US Howcast, Next New Networks, Rocketboom and Young Hollywood to allow web users to watch videos on the site as they are broadcast live and even comment on them with other users.
"This new platform integrates live streaming directly into YouTube channels," said Joshua Siegel and Christopher Hamilton, in a blog.
"Included in the test is a 'Live Comments' module which lets you engage with the broadcaster and the broader YouTube community. Based on the results of this initial test, we'll evaluate rolling out the platform more broadly to our partners worldwide."
This isn't the first time YouTube has streamed live broadcasts. Last year the video-sharing site offered U2 fans the chance to watch the group perform live from LA.