I have recorded a short screencast (video only). I need it to be edited in the following way:
* Remove 3-4 parts from it.
* Two long video segments (long file download) should be transformed to fast-motion (of duration about 5 seconds)
* Adding 5 or so subtitles that fade in and out.
* Adding background music (must not violate copyright, i.e. Creative Commons is okay).