Now it creates a new file and writes edit decision list (EDL) records to it
just as it did before but instead of making pas-2-seconds blocks for each
'i' keystroke lets the user hits 'i' to mark the start or end of a block.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18916 b3059339-0415-0410-9bf9-f77b7e298cf2