« previous next »
Pages: [1]   Go Down

Author Topic: Compressed object streams?  (Read 211 times)

0 Members and 1 Guest are viewing this topic.

Offline tapdn

  • Ninja Master
  • **
  • Posts: 6189
  • Gender: Male
Compressed object streams?
« on: January 18, 2010, 02:57:06 PM »
I got an email from the people who handle our online interactive Pubs. I create an optimized multi-page PDF which our people send to them. The email states: After running some test on the problem pages I noticed that these pages use compressed object streams which YUDU does not support. If you have access to Adobe Acrobat Pro we recommend you optimize your PDF to get rid of any issues YUDU may have with PDF.
When optimizing does not work we recommend loading the problem page into Photoshop and then saving it as PDF, this will flatten the PDF and get rid of any issues.
My optimiziner is already set to flatten all transparencies, but I did notice a setting "Remove compression" under "Object compression options" under clean-up.
Anyone have a clue what these people are talking about?
Logged
usually fried mate - sometimes pickled - often scrambled - never beaten
~ Sir B. Monsteaure
No, he's well within his rights to diss cake. Pie, on the other hand, is waaaayyyy off limits.
~Youston

Offline tapdn

  • Ninja Master
  • **
  • Posts: 6189
  • Gender: Male
Re: Compressed object streams?
« Reply #1 on: January 18, 2010, 03:13:44 PM »
Logged
usually fried mate - sometimes pickled - often scrambled - never beaten
~ Sir B. Monsteaure
No, he's well within his rights to diss cake. Pie, on the other hand, is waaaayyyy off limits.
~Youston

Offline david

  • Avast! Where`s me
  • Global Moderator
  • Ninja Member
  • *****
  • Posts: 3229
  • Gender: Male
  • arrrrrrrggg....
Re: Compressed object streams?
« Reply #2 on: January 18, 2010, 03:33:48 PM »
glad you got it sorted, thanks for the tip as well!
Logged
Supervisor/Shift Leader - Electronic Prepress Dept.
Mac -  OS X 10.4.11 Dual-Core Intel Xeon  -  PC - XP Pro  -  Esko-Artworks Suite 7 R6
HP 5000  -  Epson 9600  -  Kodak Approval XP  -  Lotem 800 Platesetters  -  Kodak FlexCel

Offline frailer

  • S W Pacific Night Mod..and..loving it! Sydney, Australia
  • Global Moderator
  • Ninja Member
  • *****
  • Posts: 3368
  • Gender: Male
Re: Compressed object streams?
« Reply #3 on: January 18, 2010, 04:07:11 PM »
Certainly more constructive advice than the email. Take into PhotoShop...   :rolleyes:

But...what are Object Streams? And, if I'm right in assuming they're being sent for online viewing, why would you be removing compression?
But then, it's compression of objects, not images.   :undecided:  Something in that, maybe.
Logged
Fuji Luxel V6 full-auto. B2 6&4 col presses. G5 PPCs.Tiger.PC RIP. FujifilmXMF 'flow.
Go'bless Tim Berners-Lee for being the kind of guy he is. Tim Berners-Lee (Berners-Lee made his idea available freely, with no patent and no royalties due).

Offline Joe

  • Master of Nothing
  • Administrator
  • Ninja Master
  • *****
  • Posts: 9468
  • Gender: Male
    • B4Print.com
Re: Compressed object streams?
« Reply #4 on: January 18, 2010, 04:14:15 PM »
Compact PDF Specification

Quote
Bulk compression of most objects in same stream
    PDF 1.5 introduces object streams which are very effective in compressing hyperlinks, which can be plentiful and were previously uncompressed. However, pages cannot be put into object streams and must be compressed separately. This is unfortunate for the general purpose compression algorithms (LZW and Flate), since they achieve compression by replacing patterns previously seen with short indexes to the pattern, and with less text there is less opportunity for sharing. Compact PDF compresses all or most pages together, into a compact stream.

Logged
Joe
Mac OS X 10.5.8 Leopard
Prinergy 5.1.2.0
2 Luscher XPose 160 CTP

Nothing is foolproof to a sufficiently talented fool.

Offline frailer

  • S W Pacific Night Mod..and..loving it! Sydney, Australia
  • Global Moderator
  • Ninja Member
  • *****
  • Posts: 3368
  • Gender: Male
Re: Compressed object streams?
« Reply #5 on: January 18, 2010, 04:19:37 PM »

That explains everything. My brain now hurts.
Logged
Fuji Luxel V6 full-auto. B2 6&4 col presses. G5 PPCs.Tiger.PC RIP. FujifilmXMF 'flow.
Go'bless Tim Berners-Lee for being the kind of guy he is. Tim Berners-Lee (Berners-Lee made his idea available freely, with no patent and no royalties due).

Offline Joe

  • Master of Nothing
  • Administrator
  • Ninja Master
  • *****
  • Posts: 9468
  • Gender: Male
    • B4Print.com
Re: Compressed object streams?
« Reply #6 on: January 18, 2010, 04:31:34 PM »
I didn't really understand much other than it has something to do with links. And I've seen that message about compressed object streams in Acrobat preflight.
Logged
Joe
Mac OS X 10.5.8 Leopard
Prinergy 5.1.2.0
2 Luscher XPose 160 CTP

Nothing is foolproof to a sufficiently talented fool.

Offline mattbeals

  • Consultant/Trainer
  • Sr. Member
  • ****
  • Posts: 262
  • Gender: Male
    • Matt Beals
Re: Compressed object streams?
« Reply #7 on: January 18, 2010, 04:50:22 PM »
It basically compresses other parts of a PDF that aren't "normally" compressed, like images. Sounds like the engine Yudu is using makes "yudu" extra work that their engine isn't capable of doing. Sounds like a flaw to me....
« Last Edit: January 18, 2010, 04:51:25 PM by mattbeals »
Logged
Matt Beals
(425) 582-8554 - Office
(206) 201-2320 - Voicemail
(206) 618-2537 - Mobile

Offline frailer

  • S W Pacific Night Mod..and..loving it! Sydney, Australia
  • Global Moderator
  • Ninja Member
  • *****
  • Posts: 3368
  • Gender: Male
Re: Compressed object streams?
« Reply #8 on: January 18, 2010, 05:26:07 PM »

That makes sense. I doubt tap was doing anything out of the mainstream.

Your pun also qualifies you as a probationer in the old man joke stakes, Matt. Just thought I'd send a heads-up on that. In case it may be a concern for you.
It may not be, of course.    :laugh:
Logged
Fuji Luxel V6 full-auto. B2 6&4 col presses. G5 PPCs.Tiger.PC RIP. FujifilmXMF 'flow.
Go'bless Tim Berners-Lee for being the kind of guy he is. Tim Berners-Lee (Berners-Lee made his idea available freely, with no patent and no royalties due).

Offline youston

  • Ninja Member
  • *
  • Posts: 3574
  • Gender: Male
  • My wife says "cake." Divorce imminent.
Re: Compressed object streams?
« Reply #9 on: January 18, 2010, 05:29:17 PM »
Quote from: frailer on January 18, 2010, 05:26:07 PM
Your pun also qualifies you as a probationer in the old man joke stakes, Matt. Just thought I'd send a heads-up on that. In case it may be a concern for you.
It may not be, of course.    :laugh:


Pshaw! Puns are high art around here!
Logged
The critics agree:
Quote from: Skryber on February 25, 2010, 02:08:27 PM
I think Youston is ... wise ... .

Quote from: DigitalCrapShoveler on November 07, 2008, 08:38:20 AM
Youston knows I love him!

Quote from: beck  on January 31, 2010, 12:49:05 PM
Absolutely cannot argue with Youston on this one.

Offline tapdn

  • Ninja Master
  • **
  • Posts: 6189
  • Gender: Male
Re: Compressed object streams?
« Reply #10 on: January 18, 2010, 05:29:56 PM »
did someone mention pun :rolleyes:

(tip of the ole hat to Beermonster)
Logged
usually fried mate - sometimes pickled - often scrambled - never beaten
~ Sir B. Monsteaure
No, he's well within his rights to diss cake. Pie, on the other hand, is waaaayyyy off limits.
~Youston

Online beermonster

  • since my op i now have a
  • Ninja Member
  • *
  • Posts: 3280
  • Gender: Male
  • ffs quack hurry up and die
Re: Compressed object streams?
« Reply #11 on: January 27, 2010, 07:57:09 AM »
oi! get yer own catchphrase tap :evil:
Logged
Leave me here in my - stark raving sick sad little world

Offline tapdn

  • Ninja Master
  • **
  • Posts: 6189
  • Gender: Male
Re: Compressed object streams?
« Reply #12 on: January 27, 2010, 08:29:36 AM »
 :tongue:

was meant as a compliment ye Scottish edgit!
Logged
usually fried mate - sometimes pickled - often scrambled - never beaten
~ Sir B. Monsteaure
No, he's well within his rights to diss cake. Pie, on the other hand, is waaaayyyy off limits.
~Youston
Pages: [1]   Go Up
« previous next »