Did you output video or photo files? And what formats did you output them as?
Lightroom should accept MP4s, which you can output Publish & Share/Computer/AVCHD with the YouTubeHD preset.
Hoping to add a little to Steve's suggestion, Adobe has some instructions on using Lightroom for video here:
It says there that, "Lightroom imports many common digital video files from digital still cameras, including AVI, MOV, MP4, and AVCHD." Note that there are many formats NOT supported, such as WAV. Also note that it suggests digital still cameras with two channel audio, not camcorders with five channel audio.
Also on that page is a link to a pretty good 11 minute video tutorial on using Lightroom for video. There is just enough in Lightroom to make it useable to make complete, edited videos! The turorial is provided by Adobe's own J. Kost, who is my second favorite on line teacher behind Steve!