Solved

Batch convert image bit depth

Posted on 2011-09-23
4
731 Views
Last Modified: 2012-05-12
Hi

After we compressed our data volume with a special compressing software from Balesio, we realized all the BMP graphics were compressed just as well, but the software changed the bit depth of all this BMP files from 8 bit to 32 bit!!!! Now we are not able anymore to use this BMP's in our special engineering application, because it can handle only 8 bit pictures.

So big question, does anyone know a software we can use in a batch mode to change the bit depth from 32 bit to 8 bit again on all this thousands of BMP files? Tried the "PhotoELF" application, but I can't get it to work in the batch mode.

Thx for all suggestions
0
Comment
Question by:Wayne7215
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 11

Accepted Solution

by:
Paolo Santiangeli earned 500 total points
ID: 36588287
hi,
did you try with irfanview?
http://www.irfanview.com/
0
 
LVL 1

Author Comment

by:Wayne7215
ID: 36598136
Hi and thx for the suggestion.
I was surprised that a free tool like IrfanView is giving the option, but after a few tests, it would not change just the color depth of a BMP file. I tested it with the following settings:

Settings
But at the end the file has still a 32 bit and not 8 bit color depth.

Any other suggestions?
0
 
LVL 11

Expert Comment

by:Paolo Santiangeli
ID: 36599304
hi,
it should work...
(http://en.irfanview-forum.de/vb/showthread.php?6992-Batch-Resizing-BMP-files-Increases-Colour-Depth)

did you try the operation manually?
can you post a sample file?


0
 
LVL 1

Author Closing Comment

by:Wayne7215
ID: 36902450
Worked perfectly!
It was a bit tricky to figure out how to keep the existing folder structure and run the batch so it replaces the files, but finally we got it to work and converted all the BMP files back to 8bit.

Thanx alot!
0

Featured Post

[Webinar] How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them. Thursday, July 13, 2017 10:00 A.M. PDT

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In a previous article published here at Experts Exchange, Signature Image with Transparent Background (http://www.experts-exchange.com/Web_Development/Document_Imaging/A_12380-Signature-Image-with-Transparent-Background.html), I explained how to cre…
This tutorial shows how to create a greeting card by combining two image layers and a text layer on a PC using a free image editing app.
The goal of the tutorial is to teach the user what exposure is and how to use the exposure slider. Analyze the photo that you want to edit, then adjust the exposure slider to your liking.
It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages.

724 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question