Can not upload movie file

HI,

I am trying to upload a movie file with extenstion .flv to a new item I created in my collection.
however, I do get this message every time
File Upload: The file 'test.flv' could not be ingested because its media (MIME) type could not be detected.

I went to security setting and Disable File Upload Validation, then I checked the MIME type information , it looks like this

Mime Type / Browser:
application/octet-stream
Mime Type / OS:
application/octet-stream
File Type / OS:
Macromedia Flash Video

I am not sure how to upload the file?
Thanks

Hello Nancy - I know its been a year, but did you ever get an answer to this question? I'm having the same problem. Thanks - Ken