TBS is launching two video Web sites and plans to stream its new original comedies online.

Its sister network, TNT, announced plans for its own broadband site earlier this month. Both channels are trying to take advantage of the rush of interest in video among Internet users and advertisers.

Laugh Lab at TBS.com will feature video of standup performances from more than 80 comedians, the company said in a statement Tuesday. The site will also enables Web users who don’t see the new TBS shows “My Boys” and “10 Items or Less” to watch the programs online. It launches in the fall.

Laugh Lab features a video blog with viral videos and commentary, a showplace for user-generated content and a collection of TBS’s Department of Humor Analysis shorts, featuring John Cleese.

The other site, Veryfunnyads.com, will launch Wednesday, when TBS airs the special “World’s Funniest Commercials.” Users will be able to e-mail their friends links to their favorite commercials, offer feedback and suggest additional ads for inclusion on the site.

“Our broadband strategy is to provide viewers with access to comedy in its many forms, from stand-up comedy to the world’s funniest commercials to broadband presentations of our original series,” said Steve Koonin, executive VP and general manager of TBS and TNT. “Through Veryfunnyads.com and Laugh Lab, we’ll be able to provide broadband users with a dynamic assortment of comic material guaranteed to keep them laughing non-stop.”