I am trying to generate a gif in the command line.
My source image has tiles like this:
When I create a gif with the command convert source.png -crop 80x80 +repage test.gif I get the following result:
In this image each image is drawn on top of the ones before it. So how can we reset the scene on each image draw so each tile in the source image becomes a frame itself?
I think you need to set the "disposition":
convert -background none cartoon.png -crop 80x80 +repage -delay 80 -set dispose background result.gif
Related
I am creating preview images of all JPG/PNG/GIF that are uploaded to our server.
For this I use ImageMagick with:
convert -format jpg -quality 90 -strip -background white -flatten -alpha off +repage -resize '255x255>' ".$locationtmp." -write '".$preview."'");
The parameters added are to flatten the background (make it white instead of black).
However, when using the code to create a preview of an animated GIF, the result is distorted.
Example of a distorted result:
I tried to add the +repage parameter but it did not help.
How to get a nice preview of the GIF as PNG? It could also be just the first frame.
In Imagemagick, if you want a preview image for all formats including gif and want just the first frame of the animation for the preview, then just add [0] to the filename, such as animation.gif[0]. This will take the first frame of the animation and the only frames of the other formats such as JPG and PNG that only allow one frame. The appended [0] does not hurt the other formats.
So use
image.suffix[0] in place of just image.suffix
for generating a single image preview
I am trying to change the background layer of a batch of png images to include a moving gif. I'm running on MacOs and imagemagick version 7.1.0-19.
There are two types of images I want to merge:
Overlay static images A*.png
Background image Moving#40.gif
The background gif takes 120 frames.
So far I have managed to build the images and create GIFs. However the animated gifs are not moving. I have tried including delay and loop but this does nothing. The code is as follows:
magick mogrify -format gif -delay 10 -draw 'image Dst_Over 0,0 0,0 "Moving#40.gif"' A*.png -loop 0
I have been looking for days for similar use cases but have not found a solution,I just recently got into ImageMagick so advice is much appreciated.
any ideas on how this can be accomplished?
One way would be to process them one at a time in a script loop, since one is a gif animation. Then you would use a null: separator and -layers composite. For example for one PNG.
Transparent PNG:
Animation:
magick logot.png null: \( glitter.gif -coalesce \) -gravity center -compose dstover -layers composite -layers optimize result1.gif
See https://legacy.imagemagick.org/Usage/anim_mods/#composite
Alternately, you can use -draw, but in the reverse with the png inside -draw and the GIF after magick.
magick glitter.gif -gravity center -draw 'image Over 0,0 0,0 "logot.png"' -layers optimize result2.gif
I am trying to crop and swap different parts of a big 800x800 image and re-create 800x800 image using imagemagick with this command.
magick mogrify titli.gif -crop 2x4# +repage -reverse -append -path converted titli.gif
my problem is "-append" creates tall image (400x1600) & "+append" creates wide image (3200x200)
How can I get a large image of original size 800x800 but with cropped and swapped (reversed) parts set in "mosaic or tiled" style...
If I understand the question, you shouldn't need "mogrify" to do that. Just "magick" should accomplish that task.
It looks like you'll have to crop the image into 8 pieces, reverse them, and "-append" them vertically as you've done.
Then after that, and in the same command, you'll need to crop that result in half vertically and "+append" those two pieces horizontally to get the 800x800 output.
This example command shows how it works...
magick in.png -crop 2x4# -reverse -append -crop 1x2# +append out.png
If you're doing any more operations within the same command you'll probably want to use "+repage" after the "+append" to reset the image geometry back to WxH+0+0.
I have a large number of research pdf figures, and I need to preform the following actions in ImageMagick:
convert all pdf to png
crop png from left/top corner x:334/y:244; from right/bottom corner x:214/y:340;
original size 2100x2100, cropped size 1552x1552 pixels
resize cropped png to 240x240 pixels
Here is how it should be cropped for point 2, the pink area is what I want to have:
I was only be able to get 1st action done with my knowledge:
mogrify -format png -density 300 -flatten *.pdf
How can I do the 2nd and 3rd actions please? And do I need to run three separated commands or could they be combined into one command?
I do not know what exact order you need for mogrify as I do not use it. I also do not know why you need flatten Try:
mogrify -format png -density 300 -crop 1552x1552+344+244 +repage -resize 240x240 *.pdf
I'm wondering how to remove and replace transparency in an animated GIF with ImageMagick.
My goal is to take several pages with different aspect ratios and make an animated GIF that cycles through them.
document1.png
I am using
convert -delay 50 -resize 212 -dispose Previous -page 212x275 -crop 212x275+0+0 +repage document1.png document2.png documents.gif 2>&1
to create the GIF.
This sizes my documents correctly, but leaves the empty space from the short images transparent, but I would like that to be white. How can I change the transparency to white?
doc.gif
I have tried
convert doc.gif -background black -alpha off doc2.gif
convert doc.gif -background black -flatten doc2.gif
-alpha doesn't seem to do anything, and -flatten removes the animation