Incorrect File Extension Fixby matt on July 18, 2007
Q: When I download AVI files from a forum they always download as .php or .html and then I am unable to get them to open a video player. How can I fix this?
A: What happens is the forum/website you are visiting is sending information about the file and the file type to your web browser in a way that it cannot understand. So while you are downloading a video your web browser things you are downloading a web page. One thing you can try is using a different web browser. If you are using IE you can try FireFox and visa versa. You will also want to make sure that you are using the most updated version of your browser as well.
Another option is renaming the file extension. Depending on how your computer is setup you might actually need to go into the command line to do this correctly (“Start” -> “Run” -> Type “command” or “cmd” depending on what version of windows). Your other option is to change your settings so that you can see the file extension.
Now if you change the extension and then the file correctly opens with your video software but you then start getting an unknown codec error, then you will have to ask around on that website where you can download the correct codec to play the videos.