|
| From: | Tino Calancha |
| Subject: | Re: image-dired: Check all external programs available |
| Date: | Sun, 4 Sep 2016 22:49:43 +0900 (JST) |
| User-agent: | Alpine 2.20 (DEB 67 2015-01-07) |
On Wed, 31 Aug 2016, Mathias Dahl wrote:
As you know, 'convert' also can rotate an image.
Yes, it probably can, but as I remember it, the rotation is lossy, i.e. it
makes the JPEG data worse than before the rotation.
jpegtran was able to do lossless rotation, which is why I picked it. For
thumbnails it would not matter but for rotating original
files it's not nice to loose information/quality. As long as users can get hold
of jpegtran I think it should be the default
program used for rotation.
Thank you very much for the explanation. I have pushed the changes to the master branch as commit ca473907
| [Prev in Thread] | Current Thread | [Next in Thread] |