| Re: Problem with MJ2 extension [message #60669 is a reply to message #60533] |
Tue, 27 May 2008 06:58   |
wgallery
Messages: 32
Registered: December 1998
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Member |
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On May 25, 7:06 pm, Mark <mark.h...@gmail.com> wrote:
> On May 24, 4:16 pm, tarequea...@gmail.com wrote:
>
>> Hello IDL gurus,
>
>> I am having some trouble regarding '.mj2' extension. I have couple of
>> '.gif' files and by using IDLffMJPEG2000
>> I can get some nice animation. But the fun just ends there.I need to
>> have these on a more 'portable' formats as in : avi,mpeg,mov etc. A
>> little searching on the net did not bring anything home.
>
>> I was hoping to get some pointers on how to convert these mj2's avi/
>> mpeg/ mov etc.
>
> For now, writing MJPEG-2000 animations is a waste of time because
> there's very little software to play the file or convert it to
> something else. You're better off writing from IDL straight to the
> format you want. There's some discussion on this right now on a thread
> entitled "animated png: a new format for scientific animations".
>
> In addition to being poorly supported, MJPEG-2000 suffers another
> limitation that makes it not very good for scientific animations: it
> fails to make any use of inter-frame compression methods. This means
> the files are much larger than they need to be.
FYI:
MJPEG-2000 files can be played on MS Media Player if you install the M-
JPEG codec V3 from Morgan Multimedia
http://www.morgan-multimedia.com/index.htm
Note: it says that this is a trial version that expires Oct, 2007, but
it still runs after popping a reminder window.
Bill Gallery
Atmospheric and Environmental Research, Inc.
Lexington, MA
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