I have some .mp4 movies that are 2-4GB. I am trying to reduce the file size by at least in half without dropping serious quality. A little is okay, but I don’t want to watch a crappy dark blurry movie. I watch the movies on my 13-inch Macbook. However, I would like to keep them in the .mp4 format. I do have the handbreak, but it takes forever and usually crashes/freeze after a few moments. I don’t mind downloading another program to do this. Can y’all recommend a program and what settings to use. Thanks.