omg files to mp4

ok i am use format factory to convert files to mp4. and i am trying to converter omg files to mp4 files but every time i convert omg files they get done in 1 sec and they dont have the video can some one tell me whats wrong.
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can some one plz help i like to convert the file to mp4 but every time i do it does not convert it right

It's OGM, not OMG.Make sure you have the correct codecs installed on your computer. I think some converters use the codecs on your computer to do it's work, likely you don't have the codec for the video so it's just converting the audio. From what I've read the OGM file is a "container" and the video could actually just be something like Xvid codec.