Hello Arney,
Please, specify which version of Video Splitter you use.
Also we need the source media file + intervals as an example that you have selected for trimming. (You can use any file hosting service)
I suppose source media file is playing fine on that interval both in vlc and WMP.
Tell the version of VLC you are using.
Do you run x64 version of Win7 or x32?
Did you try to play trimmed file on other computer using windows media player?