I need a video creator that accepts .mp4 files. Every time I try to convert them, they end up choppy and don't work. I have been working at this for 7 hours now and I need to find a video creator that accepts the .mp4 files so I can make trailers again. Windows Movie Maker does not support the files neither does Sony Vegas Movie Maker. Please help me find this, I really need to finish this by tonight. School is overwhelming me and I would like to get it done as quickly as possible, but I can't with out you all's help. Please help me!!!