- do not allow to simply copy the video file
- decision to transcode or just reference is made in "transcode dialog"
not during file-selection.
Only there the actual codec is known and can be judged to be suitable
for direct reference
- simplify "transcode dialog" - no more buttons for specific actions,
drop-down select actions.
- increase minimum bitrate for imported file to 500kbit/s
Hide most of the setup complexity that is irrelevant when
running the video-server on the same host as Ardour.
Add an abstraction layer to the config which will become
important later when /building in/ the video-server.