i found the solution by myself.
1.update version CS6 of encore DVD
2.create new timeline to put all movie contents as ABCD
3. create new "chapter play" (if wrong, sorry, i don't know English version) to set A-B-D
and create another "chapter play" to put A-C-D for example.
then you don't have any waiting time and also timecode is shown continiously!!!
even verCS5.1 has "Chapter play" but it didn't work, also to put several assets on one timeline must be stopped and freesed, but with CS6 it works!
thanks to new version.
more additional problem is,
when user push que /rewind of contoroller, timeline shows all movies one by one.. that's bit strainge...i will find another solution on it.
thank you for your cooperations.