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In article <39fd0c16$1@news.povray.org>, "Mark Wagner"
<mar### [at] gtenet> wrote:
>Thorsten Froehlich wrote in message <39fceb81$1@news.povray.org>...
>>No, QuickTime plays MPEG movies.
>To quote the error message Quicktime 4 gives me:
>"Couldn't open the file "mwinvade.mpg" because it is
>not a file Quicktime understands."
The Mac generally stores a file's type and creator as an integral part
of the file, so when it sees a Windows file, it has to guess. The act of
registering a windows file as playable by quicktime and the ability to
play a windows file are actually completely separate in the Mac OS.
When you place a windows file on a Macintosh, the Mac's OS looks at the
extension, and then looks in its database of Windows extensions and
marks the file appropriately. The extension ".mpg" corresponds to MPEG,
which Quicktime can play. Go ahead and (if you really want to see this
in action) name a Word document "myresume.mpg" on Windows, and copy it
to your Mac. It will register for Quicktime, but Quicktime obviously
won't be able to play it.
(Windows does the same thing on its own files: go ahead and rename your
MPEG file "mymovie.doc", and double-click it. It should open in
Microsoft Word assuming you have Word on your computer. Word will
hopefully tell you it doesn't understand the file format. If you go into
your movie player and do a File:Open, and tell the filepicker to show
all files, you will still be able to open the mymovie.doc file that way
and the movie player will accept the file.)
Most likely:
(a) this is a new form of MPEG that Quicktime 4 doesn't yet
understand. I think this is unlikely, since as far as I know MPEG is a
specific format, not an encapsulation of other formats. But if MPEG can
encapsulate other formats, I'd call this the most likely problem.
(b) the file was corrupted in transit; for example, if it was FTP'd,
it might have been FTP'd in text mode.
(c) Or it might be that it isn't really an MPEG file, it just has the
.mpg extension, and is actually another video format (divx?) that is
relatively new, and that the other players understand but that Quicktime
doesn't yet.
Jerry
--
http://www.hoboes.com/jerry/
"Give a man a fish and you feed him for a day. Teach him to fish, and you've
depleted the lake."--It Isn't Murder If They're Yankees
(http://www.hoboes.com/jerry/Murder/)
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