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ImageMagic rotated image does not work in iPad?
Why is this?
jmorgan

5+ Year Member



 
Msg#: 4375072 posted 6:03 am on Oct 16, 2011 (gmt 0)

Hi, I'm not expert on image formats but I've been using ImageMagick's mogrify tool to do bulk rotating of images like this:

mogrify -rotate 90 *.jpg

I've noticed that the images appear to be rotated fine when viewed with a Windows browser but to my horror the images I've been rotating don't seem to render as rotated when using an iPad or iPhone. For some reason the iPad/iPhone seems to think the images are still unrotated.

Does anyone know why?

 

coopster

WebmasterWorld Administrator coopster us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 4375072 posted 6:08 pm on Oct 18, 2011 (gmt 0)

In a browser you mean? Safari? Try clearing the browser cache or refreshing the page.

lucy24

WebmasterWorld Senior Member lucy24 us a WebmasterWorld Top Contributor of All Time Top Contributors Of The Month



 
Msg#: 4375072 posted 8:33 pm on Oct 18, 2011 (gmt 0)

My hunch is that in the specific case of the iPad, its built-in rotation software* overrides anything on the smaller scale.

:: getting dizzy trying to visualize this ::


* This is very unnerving for the first day or so. If you physically turn the iPad, the whole screen image turns too. You can switch off the option if you particularly want to look at things upside-down or sideways-- or if your hands are too unsteady-- but it's the default behavior.

Robert Charlton

WebmasterWorld Administrator robert_charlton us a WebmasterWorld Top Contributor of All Time 10+ Year Member Top Contributors Of The Month



 
Msg#: 4375072 posted 6:35 am on Nov 19, 2011 (gmt 0)

I don't know anything about ImageMagick, but I know that the iPad and iPhone don't run Flash, by design.

Are you using anything related to Flash or any code that would make the iPad or iPhone think you are using Flash? If so, that might be the problem.

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