Bug 625725 - Wishlist - jpegtran utility misses some important options
Summary: Wishlist - jpegtran utility misses some important options
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Fedora
Classification: Fedora
Component: libjpeg-turbo
Version: 15
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Adam Tkac
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Keywords:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-08-20 09:44 UTC by Zdenek Kabelac
Modified: 2013-04-30 23:46 UTC (History)
2 users (show)

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Clone Of:
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Last Closed: 2011-07-11 15:16:44 UTC


Attachments (Terms of Use)

Description Zdenek Kabelac 2010-08-20 09:44:19 UTC
Description of problem:

libjpeg-turbo seems to come with different (older) version of jpegtran utility for lossless jpeg conversion.

It's missing support for these operations:

 
  -crop WxH+X+Y  Crop to a rectangular subarea
  -perfect       Fail if there is non-transformable edge blocks
  -scale M/N     Scale output image by fraction M/N, eg, 1/8

Support for lossless crop operation is quite important for digi cams.

I assume arithmetic coding could have some patent issues?? - thus maybe this option probably will not get to Fedora:
  -arithmetic    Use arithmetic coding

Version-Release number of selected component (if applicable):
libjpeg-turbo-utils-1.0.0-3.fc15.x86_64


Steps to Reproduce:
1. jpegtran -h

Additional info:

http://sylvana.net/jpegcrop/jpegtran/
http://www.ijg.org/

Comment 1 Adam Tkac 2011-07-11 15:16:44 UTC
The latest libjpeg-turbo (libjpeg-turbo-utils-1.1.0-2.fc15) supports all options written above. Closing.


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