How do you change a video file type without corrupting it?

I put my phone's SD card into my computer and was trying to make a movie on Windows Movie Maker and tried to import a video to create the movie, but the movie was the wrong file type. I changed the last few letters (example .3gp to .wmv) of the file and it seemed to work, but when I pressed the ';import a video'; button it said the file ';could not be imported. The selected file is not valid or is corrupted';. Help!How do you change a video file type without corrupting it?
You can't change the extension of the file to convert it. The extension is just a way for your computer to read the type of format the file is in. If you want to change the file type, you have to download a converter. For example, if you wanted to make an .3gp into a .wmv, you could search yahoo/google for ';.3gp to .wmv converter'; then use that.How do you change a video file type without corrupting it?
You will need to convert the video. Any Video Converter Free Version is the popular freeware utility which has millions of satisfied users who enjoy power, speed, and simplicity of this versatile instrument - a rare combination in the world of modern video compression technologies. This Free Video Converter converts almost any video formats to any formats, while preserving the straightforward interface design which makes this program so easy and fun to use.



Any Video Converter allows you to effortlessly convert video files between every format, for FREE! Any Video Converter Free Version can convert avi, asf, mov, rm, rmvb, flv, mkv, mpg, 3gp, m4v, and vob to avi, wmv, mp4, 3gp, mpg (PAL or NTSC), MPEG-1 and MPEG-2, wmv and flv.
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