embedding video

On LO 4.1.2.3 on OSX 10.9 I am exploring the various possibilities of
embedding video.
It would appear the ability to embed via URL to a remote source is not
available, and I was able to embed an .mov and mp4 file but not an .flv
file (format not supported.)

Download of a google doc presentation with embedded video resulted in
the video showing up only as a placeholder image.

When the video was embedded, there were no controls for the video
apparently available.

The Help files indicate that one is supposed to click the icon for the
object in the file, but of course there is no such thing in an impress
slide.

Is there a comprehensive and authoritative source for documentation of
this behavior?

Is there any way to insert a plugin object to stream a remote video?

Have you tried converting the flv to mov or mp4?

As the original post indicates, inserting mov oe mp4 files is not the issue.