Viddler, a video startup created by a distributed team of developers, launched last September to enable users to upload, enhance, and share online video. Unlike its competitors Viddler has a different business model as it aims to offer both free and premium services on a subscription basis. The most interesting Viddler feature is its ability to embed tags and comments into a particular point of a video which is implemented better than a similar feature offered by Motionbox. The tags are indexed for search while it does not appear that comments are indexed. Check out this Viddler video from the Web 2.0 Expo and you will see the inline comments feature in action. You can also find out more details via this Viddler product tour.
Viddler also allows users the ability to upload video directly from a web cam which could be compared to Upstream.TV as the You.TV movement marches on. I would love to see Viddler offer additional video editing components to put it direct competition with the video editing pack which I showcased in the online video editing showdown.
Bottom-line: Viddler site that offers users the ability to to upload, share, embed comments and tag video.