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Re: [Swftools-common] splitting spreads in pdf automatically

From: Mark Lee
Subject: Re: [Swftools-common] splitting spreads in pdf automatically
Date: Sat, 24 Apr 2010 09:55:25 -0700 (PDT)

If a "spread" is made by aligning two pages, it sounds theoretically possible that pdf2swf should recognize the separate pages. If a spread is made by "splitting" one page, it remains one page, eg if a letter size page is laid out in landscape as two 4.25 x 5.5 pages the page is 8.5x11(ins).

From: Chris Pugh <address@hidden>
To: Andreas M. Eberharter <address@hidden>
Cc: "address@hidden" <address@hidden>; Roy <address@hidden>
Sent: Fri, April 23, 2010 11:53:11 PM
Subject: Re: [Swftools-common] splitting spreads in pdf automatically


and it works on images.

I did not say that it was not possible to split a 'spread',  what I
said was that
you have to know that 'spread' *exists* in the first place!

As far as I am aware, a PDF can consist of a set of pages, each of which can
be different in dimensions. Example,

Let's suppose a PDF file consists of four pages:  pages 1 and 2 are A4, page
three is A3 ( actually a 'spread' of 2 x A4 as one page ), and page 4 is A4
( actually a 'spread' of 2 x A5 as one page ).  What tells Adobe Reader that
page 3 is a 'spread' and not a full A3 page, and page 4 is a 'spread' and not
a full A4 page?  Anything??  Visually it may be obvious,  but how does a
Reader/Viewer program *know* that there is  one?

If a viewer program can tell the difference, then pdf2swf should be
able to tell.
If it is unable to tell, then how is pdf2swf supposed to know hat there *IS* a
difference??  The tool is only as good as the file that is fed into it!!



In the example Roy gave,  the dump from pdfinfo said there were 4 pages.
Adobe Reader said there were four pages.

On 23 April 2010 22:12, Andreas M. Eberharter <address@hidden> wrote:
> Hi,
> It exists a Linux tool called unpaper (if I remember correctly) which does
> what you want. I used it for double page scans, but didn't get it to work
> properly.
> If you find out some decent command line, I would be happy if you'd share.
> Regards, Andreas
> On 22.04.2010, at 20:21, Roy <address@hidden> wrote:
>> Hi, I was wondering if there is a code in pdf2swf that will allow it to
>> detect spreads in the pdf file and automatically split them before
>> converting the pages to swf?
>> thanks in advance for any help
>> Roy

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