Re: lossless batch processing of jpeg pictures (os x)
On 26 Mar 2008 14:35:01 GMT, in rec.photo.digital Chris Malcolm
<cam@holyrood.ed.ac.uk> wrote:
>pierre lemercier <pierre.lemercier@wanadoo.fr> wrote:
>> pierre lemercier <pierre.lemercier@wanadoo.fr> wrote:
>
>>> Is there an easy (possibly free) software to do that?
>
>> I mean Is there an easy (possibly free) software to do lossless
>> rotations in batch mode?
>
>If the rotations are by integral numbers of right angles, Irfanview
>(shareware) can batch process those.
However, if you look at the subject line, he's running OS X on a Mac.
Irfanview is PC only. Maybe image magic or graphic converter?
Re: lossless batch processing of jpeg pictures (os x)
On Wed, 26 Mar 2008 20:31:27 -0400, me wrote:
> On 26 Mar 2008 14:35:01 GMT, in rec.photo.digital Chris Malcolm
> <cam@holyrood.ed.ac.uk> wrote:
>
>>pierre lemercier <pierre.lemercier@wanadoo.fr> wrote:
>>> pierre lemercier <pierre.lemercier@wanadoo.fr> wrote:
>>
>>>> Is there an easy (possibly free) software to do that?
>>
>>> I mean Is there an easy (possibly free) software to do lossless
>>> rotations in batch mode?
>>
>>If the rotations are by integral numbers of right angles, Irfanview
>>(shareware) can batch process those.
>
> However, if you look at the subject line, he's running OS X on a Mac.
> Irfanview is PC only. Maybe image magic or graphic converter?
ImageMagick doesn't do lossless rotation. Jpegtran with the lossless
crop/rotate patch would probably compile on OS/X. It would be
trivial to use in a script to process batches of images. For the
same reason as Irfanview, jpegtran will only rotate in 90 degree
increments.
lossless batch processing of jpeg pictures (os x) 
Linear Mode
