Now in high-def!

This season, Major League Baseball is introducing a new gimmick to an old sport: enhanced streaming video, and granular replays on MLB.TV.

Technology provided by Swarmcast enable the site to determine the speed of a viewer's internet connection, then adjust the quality of the video accordingly, reports The New York Times.

The site's video offerings shall otherwise operate like a TiVo digital video recorder, letting fans stop, rewind and replay crucial moments in a game as they wish. Another feature, "audio sync," lets them overlay their preferred radio broadcasters over the TV feed.

MLB.TV is subscription-based. This year a subscription will cost $110 for the full season; $80 will bring less spendy fans a stripped-down version of the same offering.

Notably, blackout rules meant to protect local TV networks prevent MLB.TV from providing footage of the teams they're most interested in: the local ones. New York-based fans, for example, cannot watch the Yankees or Mets online; but the other 28 teams are available to them.

This small setback hasn't prevented a half-million baseball fans from paying $120 each last year to watch live video of games online, reports MLB.com. On top of that, 350,000 users paid an additional $15 to listen to radio broadcasts streamed over the 'net.