Go to the Window menu, and select "Show movie info". It should show you the
CODEC
required to play it back.

You may need to install a special codec to play it back if someone used
something non-
standard.

If you check with the person that made the file, they will let you know what you
need to
play it.

Ron

--- In QuickTime@yahoogroups.com, sl45_sotong <no_reply@...> wrote:
>
> Hi,
>
> I have 1 MOV file more than 300MBytes in size. Whenever I wish to
> play, it gives me the file is not of MOV type. Please help to advise
> what software can I use to edit the MOV file, and how shall I edit it.
> Thanks.
>
> Regard.
>