Yes !! I tried it after chetan's suggestion , md5sum of assembled
video and actual video came out to be different which is because of
assembling problem.
But still I was not able to understand why this assembling is giving
the currupted output.However good news is that I found the bug in the
concept & assembled the videos seperately and now the assembling is
giving the entire video.Anyway thank you guys for having concern.At
least now we are assure that this can be done.I'll still need some
time to build the module.Uff this college schedule is ruining my time.