- hardware players don't tolerate video or audio frames that overlap in time & some...

 - hardware players don't tolerate video or audio frames that overlap in time & some dvd mastering techniques take advantage of this. Get rid of fudge factors so we drop all such frames otherwise they screw up our a/v sync.
 - fix video timing 'off by one': since we look one frame ahead time has to actually advance on the next video frame. time that stays the same guarantees a one frame overlap which really messes up mp4 durations.

git-svn-id: svn://localhost/HandBrake/trunk@1372 b64f7644-9d1e-0410-96f1-a4d463321fa5