ed file format problem 28182p

[elsilaesilaelsila]

after about 10hours ing, i finally got the whole file in my computer.
however, the format of the digital file seems a bit wrong
i've tried twice, the result of both of the ing process is a file, with exact same size, but the different format. it was supposed to be '.mp4', but it turned out to be '.fdm'.
i'm pretty much the url i took to file has no problem, so if you may plz check that

[Alex]

Hello,
.fdm means that a file is not yet ed. This ending will be removed from its name once a is finished.

[Usher]

Some sites may not provide complete file info with link. In such cases you can see that stops at 99% or the file has no proper extension.