Re: MNG made by CONVERT

Hi, Agostino,

> I'm Agostino from Italy and I'm a Linux user.
> Two years ago I chose to use MNG as format for the movie
> that I make starting from my gif frames, since I liked
> very much the compression rate and the possibility to
> see it with every browser.

I'm a little puzzled about the "see it with every browser" part,
since only two or three support it natively and even plug-ins are
rare.  Have you been using one of the Java decoders or something?

> To do my movie I simply used the "convert" program of the
> ImageMagick suite. Unfortunatly now I have problems with
> the new version of ImageMagick (5.4.7-5 for RedHat8.0 or 
> 5.4.7-83 for Suse8.1).
> In fact when I do:
> 	> convert -delay 200 frames*.gif movie.mng
> the movie.mng file is visible only using the old Netscape 
> 4.77 (on RH7.0) or the last version of Mozilla (1.4),

"visible" via IMG, A HREF, EMBED, APPLET, or OBJECT?

> but I can't see it on Mozilla 1.0 or on IExplorer, as 
> I did with movies generated by the old ImageMagick-5.2.7-2 
> (on RH 7.0). Do you have any idea why?

Not a clue.  Netscape 4.x never had any MNG support of its own,
so I can only guess that you've been using a plug-in with EMBED
or OBJECT tags, or a Java applet with APPLET or OBJECT tags.

> Do you know if ImageMagick changed the MNG format from
> 5.2 to 5.4?

It's possible that it switched to use a higher profile of MNG
(with better compression), but I don't know--I haven't followed
ImageMagick very closely.  I'll cc mng-list and see if anyone
else knows.

Best regards,
-- 
Greg Roelofs            [email protected]             http://pobox.com/~newt/
Newtware, PNG Group, Info-ZIP, AlphaWorld Map, Philips Semiconductors, ...

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