Problem with replay media catcher megavideo recording

Problem with replay media catcher megavideo recording

 

Ok,
When i use Replay Media Catcher 4.2 to record mega video streaming FROM THE MIDDLE ,there is sound only in recorded file no video...

As i cannot resume the recording in RMC,i usually record may be upto middle then stop it(megavideo movie).
It works ok.
Next day i open the video,take the time slider from a specific point,the media is recorded from that particular point as a another file but sad thing is ,when i play the file vlc player plays sound only ...and classic media player says some video codec error(but if i play the file that is recorded from the start (same movie from megavideo) there is no codec error for same video)

so,i am having a problem.
Is there any way to solve it.

Start download from the middile of megavideo video ,full not just sound only.

thanks