convert image from 4:3 -> 16:9

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ItsMee

convert image from 4:3 -> 16:9

Post by ItsMee »

Hi,

i have some backgrounds (4:3) I'd like to resize so they fit my 16:9 screen.

I'm aware that a stretch might look silly on some pictures - but that's not relevant for those backgrounds, i checked with Gimp. (But want to automate for the pure number of backgrounds)

How do I resize with convert changing the aspect ratio?

-resize -size didn't work out in my tests.

ItsMee
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fmw42
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Re: convert image from 4:3 -> 16:9

Post by fmw42 »

ItsMee wrote:Hi,

i have some backgrounds (4:3) I'd like to resize so they fit my 16:9 screen.

I'm aware that a stretch might look silly on some pictures - but that's not relevant for those backgrounds, i checked with Gimp. (But want to automate for the pure number of backgrounds)

How do I resize with convert changing the aspect ratio?

-resize -size didn't work out in my tests.

ItsMee

If you know the exact sizes in pixels you want (your screen resolution will tell you that, e.g. 1024x768, etc), then

convert image.jpg -resize WIDTHxHEIGHT! image_resized.jpg

Width=desired screen width in pixels
Height=desired screen height in pixels

Or you can use percent.

NOTE the exclamation mark ! is what forces the resize to the exact pixels and does not preserve aspect ratio. See

http://www.imagemagick.org/script/comma ... php#resize

Depending upon your system (Windows, Mac, Linux) you may need to escape the exclamation or put quotes around 'WIDTHxHEIGHT!'. On Mac and Linux, the escape is \ and on Windows the escape is ^, I think.
Last edited by fmw42 on 2008-12-14T17:11:17-07:00, edited 1 time in total.
ItsMee

Re: convert image from 4:3 -> 16:9

Post by ItsMee »

Man, I've been searching for more than an hour - 5 min in this forum & now the answer!

Great - i tried & it works out.

Thanks!
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fmw42
Posts: 25562
Joined: 2007-07-02T17:14:51-07:00
Authentication code: 1152
Location: Sunnyvale, California, USA

Re: convert image from 4:3 -> 16:9

Post by fmw42 »

ItsMee wrote:Man, I've been searching for more than an hour - 5 min in this forum & now the answer!

Great - i tried & it works out.

Thanks!
Best to get familiar with :

http://www.imagemagick.org/script/comma ... ptions.php

and

http://www.imagemagick.org/Usage/
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