avi file, RMF if it??™s an .rm (Real Media) file, MOOV if it??™s a .mov
(Apple Quicktime) file, FLV if it??™s an .flv (Flash Video) file, or W.M.F.S.D.K if
it??™s a Microsoft .asf or .wmv file. If you see no header (only junk), it??™s likely an
.mpg file.
See Chapter 3 for more information on file types, and Chapter 2 to find out
how to show filename extensions in Windows Explorer. Once extensions are
visible, you can change a file??™s extension merely by renaming the file and typing
a new one.
Playing Video | 153
Working with
Media
But what if you??™re in the middle of downloading a video from the Web?
Eventually, it??™ll be intact and playable, but if you want to start playing it
before the download is complete, you??™ll need to employ a few tricks.
First thing to know: Windows Media Player (and many other players) won??™t
play most kinds of videos while they??™re in use; that is, while they??™re currently
being saved by another program (e.g., your browser). The big exception
to this rule is streaming video, commonly found in files with the .asf or
.wmv extension (Quicktime .mov files, too); by design, these files can be
played even while in use by other applications.
To get around this limitation, open the folder containing the file, and create
a duplicate of the partially downloaded file. Using the right mouse button,
drag the file to an empty area in the same folder, and select Copy Here from
the menu that appears. Thereafter, you should be able to open the duplicate
file with no problems.
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