I downloaded what shold have been a large video file. The file suffix was .sfv, but when I try to play them windows media player opens automatically. They play, but there's no picture only sound. Anyone have any advice?
A .sfv file is used to check the integrity of a group of files..
Anyways... sounds like you need codecs to play your vid file, I would suggest that you get [url=http://www.videolan.org/vlc/]VLC Media Player
[/url] it will play damn near any video file, including .bin and files inside rar files. No codecs needed.