If you are not getting video, the region settings are probably set incorrectly. For people in North America, some parts of South America, and some parts of Asia, the region setting must be changed to NTSC-M.
To change the region setting:
If this does not resolve your issue, try recording in another file type.
To record in another file type:
Try two or three different file types. If the video works for some file types but not the one that you want, then it is likely a codec issue. You can download free codec packs online by searching for them in a search engine like Google.