Please advice. I have about a year MovieMaker 2012, processed shorter movies from the HD camera so far without a problem. Now I have this problem: I processed the film from the camera and had it saved in high definition, as before in the offered format "MPEG-4 / H.264 video file". The movie is saved in .mp4 format, the file was compressed from about 5.3 G to 4.5 G. When I try to play it, WMPlayer tells me that it can't play the file, that it probably doesn't support this type of file or the codec that was used to compress the file. At the same time, it plays older saved movies normally. Normally, it also plays newly created test movies, which I processed only from a part of the originally used files, when the resulting movie has a size of less than 1 G. I have already reinstalled MovieMaker, I have updated WMPlayer, but the problem persists. Is it possible that MovieMaker can't process such large files? I'm a computer layman, so I'm pretty good at it. Thank you.