Oposoft Video Editor is a video editing software designed to help you to make a professional video editing. It also includes an option for merging several video formats into a single file or to split a large video file into several sequences. It has already had all video encoders and decoders, you do not need to download additional codecs to make it work. With a few clicks, you can enjoy your movie clips without interruption, set your videos (brightness, contrast, hue, etc.). For further information about this program, I suggest you to download the trial version that is free.