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From: Tino Calancha <tino.calancha@gmail.com>
To: Mathias Dahl <mathias.dahl@gmail.com>
Cc: Emacs developers <emacs-devel@gnu.org>,
	Tino Calancha <tino.calancha@gmail.com>
Subject: Re: image-dired: Check all external programs available
Date: Sun, 4 Sep 2016 22:49:43 +0900 (JST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1609042246410.22904@calancha-pc> (raw)
In-Reply-To: <CABrcCQ6Yn2-oA=+j9Q=S8B0E0kWwqqrC62Ox_GdP1f13MW7qQw@mail.gmail.com>



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



      reply	other threads:[~2016-09-04 13:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-28 14:58 image-dired: Check all external programs available Tino Calancha
2016-08-30 12:11 ` Mathias Dahl
2016-08-31 12:07   ` Tino Calancha
2016-08-31 13:31     ` Mathias Dahl
2016-09-04 13:49       ` Tino Calancha [this message]

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