Ethereal-dev: Re: [Ethereal-dev] I've updated the "Ethereal User's Guide"

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

From: "Mark H. Wood" <[email protected]>
Date: Thu, 1 Jul 2004 08:58:26 -0500 (EST)
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On Tue, 29 Jun 2004, Ulf Lamping wrote:
> Richard Sharpe wrote:
> >On Mon, 28 Jun 2004, Ulf Lamping wrote:
> >>-renewed *all* screenshot, using win32 GTK2.4 with png as the file format
> >>the screenshots were outdated. png is smaller and provides better
> >>quality than jpg for screenhots, gif is still patented. All modern
> >>browsers should work with png (except lynx ;-)
> >Actually, I can't remember why jpgs were used in the original. It is a bad
> >choice for screen shots of things like Ethereal. However, the GIF patents
> >have expired now. They did so over a year ago now, I believe.
> AFAIK, the patents are still valid in some countries. They will expire
> in these days now, but I would think png should do the job.

There are not and were not any "GIF patents".  GIF *optionally* uses
various forms of compression, and one supported form is LZW, which was and
is patented.  A note on my calendar says that the last LZW patents will
expire somewhere next Wednesday, 07-Jul-2004.  The U.S.  patent expired
some time ago.

That said, I would still agree that PNG is at least as good a choice as
GIF and much better than JPEG for most screenshots.  That was well done.

- -- 
Mark H. Wood, Lead System Programmer   [email protected]
Open-source executable:  $0.00.  Source:  $0.00  Control:  priceless!

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