Now as we all know, a simple content type such as File with only the Dublin Core as metadata set and a download link is not sufficient for modern video management. Usually, we want more and, fortunately, there is more. For video enhancing content in Plone there are two strategies. First, there is
ATVideo. ATVideo is a classic Plone product. It is mainly targeted at the 2.5 series of Plone and comes with its own content type that takes care of all the logic with video processing.
ATVideo was never officially released, but there is an alpha version on plone.org that works for Plone 2.5 and the trunk from the collective repository might work for Plone 3.x.
If you start a new video project, don't use
ATVideo but ...