Link to a point in a video

By the way, a while ago, I created this online tool to create a link
to a certain point in an existing RealPlayer video:

Feedback welcome! It is pre-loaded with an example to play around
with. It could be expanded upon to work with other formats as well.
Useful for linking to a part of a speech for example.

The wiki has more notes to linking to a point within a videostream:

I'm thinking about creating a similar tool to create the code to
embed a Quicktime movie with various options (to avoid having to edit
that block of code manually every time, until our blogging tools
start doing this). Ideas welcome!