Temp files are usually just that. They are used specifically by the application that created them and most often not understood by other applications.
If you think your recording (I'm assuming videa based on your title) is in that file, then you need to figure out the format the camera records in. You simply haven't given us enough information to help you. For instance, camera vendor and model number, tape or hard drive or disc as medium, recorded codec, how did the file get to you Mac.