How to enlarge canvas of various images to one size

[coldkingnowhere]

Part of what I'm currently trying to do has me resizing a number of images to be within 800x800px (but they all have different aspect ratios) and then center each image on a 1920x1080 canvas.

All of the functions I've looked at (-border, -extent, -frame, -splice) seem to be dependent on adding a constant number of pixels to the canvas but I want the same canvas size (1920x1080) no matter what image is being processed without altering that image in any other way.

Ideas?

[Bonzo]

Try:

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convert -size 1920x1080 xc:white image.jpg -gravity center -composite output.jpg

OR

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convert image.jpg -background white -gravity center -extent 1920x1080 output.jpg

[coldkingnowhere]

That worked great! Thanks.

[anthony]

Code: Select all

convert image.jpg -background white -gravity center -extent 1920x1080 output.jpg

to include the resize... to fit in a 800x800 area in the center of the 1920x1080 canvas image...

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convert image.jpg -resize 800x800 -background white -gravity center -extent 1920x1080 output.jpg