I have Movie Maker 2012 Build 16.4.3528.0331 and am runnig Windows 8.1 on a Core i7 with 16 GB of RAM on board and a GeForce GTX 770 graphics card. My source video file is captured using ShadowPlay from Nvidia and in the MP4 video format.

Typically I have one single continuous source file that I want to edit down both by removing sections and by speeding some parts up. These are of course very basic, core functions. As I progress through the video I mark split points where I either mark a segment and remove it or in some cases I speed a segment up a little. It all works as advertised at first until I hit whatever arbitrary split limit Movie Maker has decided to impose that day.

What happens when the glitch hits is I'll come to a point where I need to place a split mark. Then I place the split and hit play again and from that point on until the very end of the project it's just a still frame of the very end of the source video while playing a few seconds of audio from near the beginning of the project. That's certainly not the function I intended and quite frankly I don't know how that could ever be useful.

When this happens that's it. There's no way to recover from that and it almost seems like it somehow corrupts my source file because it will NEVER properly let me split that video EVER again even if I start a new project from scratch. They only thing that has worked sometimes is to start a new project from a backup of the source file on a different volume.

I would really like a solution or a fix because this is just not acceptable as marking split points is a very basic and fundamental thing that one does when editing videos. It's false advertising to call Movie Maker a video editor if it glitches out when you try to edit videos. I know Live Essentials are "free" but my editing needs are NOT complex so I can't justify the astonishingly high price of more capable software but I'm one more fail away from uninstalling the whole Essentials package and finding something that actually works instead. Your move, Microsoft... GO!