Video seeding is the process of announcing, distributing and promoting a video content - most often a viral video ad - on the Internet.
The first stage of video seeding is to distribute the video on social video platforms -YouTube, Vimeo, DailyMotion, etc).
The second stage is to promote the video trough paid or free placements and actions, and afterwards wait for sharing and viral effects.
Techniques and tools used for video seeding are mainly:
promoted videos on YouTube
embedded videos on influential targeted blogs (via paid placement or PR)
email list of early adopters and viral video addicts
Strictly speaking, video seeding is only an initial launching part of a viral video campaign and most part of global audience has to finally result from virality and sharing. In fact, lines between video seeding and video adverstising via paid placements and views are often blurred.
Theorically, good viral video content doesn’t need paid placement. Only a few initial views may initiate the viral diffusion.
Video seeding services may offer centralized statistics about video views across different platforms and blogs and also offer other video metrics like video engagement.
An example of viral video seeding service: