Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!feeder.news-service.com!216.196.110.144.MISMATCH!border3.nntp.ams.giganews.com!Xl.tags.giganews.com!border1.nntp.ams.giganews.com!nntp.giganews.com!local2.nntp.ams.giganews.com!nntp.brightview.co.uk!news.brightview.co.uk.POSTED!not-for-mail NNTP-Posting-Date: Fri, 24 Jun 2011 01:57:15 -0500 From: ken Newsgroups: comp.lang.postscript Subject: Re: PDF: multiple slides per page to one slide per page? Date: Fri, 24 Jun 2011 07:57:10 +0100 Message-ID: References: <7d554826-c2b6-4dff-a363-8e8bf16c6798@r19g2000prm.googlegroups.com> <49e8cf9b-1625-462f-b3dd-eddfec9dfd66@y7g2000prk.googlegroups.com> <1d724167-c700-4c97-809e-db7ffa3d23d3@r33g2000prh.googlegroups.com> <5af1bc0d-8048-416a-903a-2b737c435760@y13g2000prb.googlegroups.com> Reply-To: ken@spamcop.net MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit User-Agent: MicroPlanet-Gravity/3.0.4 Lines: 40 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-qNeGdCu9I5QTPHhoi8lgwkHd1C+ld2jMt/DVHQ+7/aN7nE+IjCpkgwjr6JgdylZuBHZZnsu9Dg9vNUP!jisN8uswaMz12Pw55jOgD3PF5FpSeWQ/r38P8NMGbqAxq1G+lTZrUEMspx/vwByfqbOUcoWAMWQW!YPtUWmX8UY5OGDrb X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 2715 Xref: x330-a1.tempe.blueboxinc.net comp.lang.postscript:260 In article <5af1bc0d-8048-416a-903a-2b737c435760 @y13g2000prb.googlegroups.com>, dmathog@gmail.com says... > > You could try using Ghostscript to render the originsal PDF file to CMYK > > and RGB, and look at the output to see if the result looks the same. > > Which command, exactly, would be appropriate? gs -r720 -sDEVICE=tiff32nc -sOutputFile=out.tif input.pdf If this isn't a single page document then add -dFirstPage= and - dLastPage= 720 is the default resolution for pdfwrite, but you can fiddle with it until you see something correctly sized for your output. > Ideally it would > unpack the image in exactly the same way the gs commands in the > preceding posts did, but save it immediately in an image format. There's no way to save immediately in an image format I'm afraid. But that shouoldn't matter. One thing that just occured to me is that its possible that the original is a JPEG image, and you have colour images set for JPEG compression, which would apply a second set of DCT losses. Ah, no, I see you are using Flate. > > You haven't said which version of Ghostscript you are using either, if > > you are using an older version you could try upgrading. > > 9.02 Well, not likely to be different in the working code. Can you post a sample PDF somewhere public ? Ken