All Questions
Tagged with imagemagick-convert gif
23
questions
0
votes
1
answer
153
views
When resizing a gif with imagemagick, the image quality degrades
When resizing a gif with imagemagick, the image quality degrades
Before resize:
After Resize:
I have tried below command:
convert input1.gif -coalesce -layers OptimizeFrame -resize 309x550 -...
- 53
1
vote
2
answers
204
views
Captioning all frames of a gif
I have a simple bash script to caption still images (jpg, png...) but it completely fails when given an animated gif. The error is convert: unable to write pixel cache '/tmp/magick-[random chars]': No ...
- 23
3
votes
1
answer
353
views
Is GIF image resolution fixed to 72ppi?
I dont understand the explanation about why GIF files always has image resolution 72ppi.
I have tried using ImageMagick converting PNG to GIF specifying -density to be 300ppi, but the resulting GIF is ...
- 445
2
votes
0
answers
2k
views
Converting from svg to gif with ImageMagick do not preserve blurring
When I run convert -delay 100 img.svg img.gif, blurring is not preserved (see below). How can I get a gif with the same appearance as the original image?
Original image (left) and output (right)
0
votes
1
answer
272
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resize only bigger gif than 250px
i want to resize only images that have bigger height or bigger width than 250px
but save aspect ratio
for png and jpg files i use this
mogrify -resize '250x250>' *.jpg
for gif is not working ...
- 175
1
vote
0
answers
319
views
ImageMagick's convert command is crashing with certain GIFs
I'm running the following command on my server for user-uploaded images:
convert "original.gif" -coalesce -auto-orient -layers "optimize" "new.gif"
This works on most GIFs but hangs forever on ...
- 8,441
4
votes
2
answers
6k
views
get "convert: improper image header" error when convert gif to png using ImageMagick
I am using ImageMagick to convert a gif to multiple png data. But I get this error:
convert: improper image header
/misc/lmbraid11/jingl/webscraping/dataset_2018_05_18/image2018_5_4_10_34.gif'
@ ...
- 61
3
votes
1
answer
1k
views
Can I join gifs with different speed or delay?
I tried to join two different gif with different delay, but the final output.gif has the same delay, not different... Is there a way to have different delays in one gif?
import subprocess
import os
...
- 23.2k
1
vote
1
answer
452
views
Fill empty space of the 256 color palette with black pixels
I need a 256 pixels color palette because FFmpeg gives me this error:
Palette input must contain exactly 256 pixels.
I use ImageMagick on Mac OS to create a GIF palette from an image that contains ...
- 751
0
votes
1
answer
178
views
Huge whitespace appearing when converting .png to .gif with bash convert
I have a directory called "plots_for_gifs", which contains 105 files, whose names are identical apart from they end in ...000.png, ...001.png ... etc. up to ...104.png. I am trying to convert them to ...
- 37
1
vote
1
answer
368
views
Wrap a gif with a png
There are two image, one is gif, another is png. Now I need to wrap the gif image with png image. I use ImageMagick and I think it may work for me.
convert src.png input.gif -gravity Center -...
- 2,633
7
votes
1
answer
7k
views
Where is convert in ImageMagick?
I just spent an infuriating day trying to make a gif out of a series of jpg files in R. I installed ImageMagick to run the following code:
system("convert -delay 40 *.png example_4.gif")
but I get ...
- 883
0
votes
1
answer
659
views
Animated gif created with ImageMagick has glitchy block color background
I am trying to stitch together a bunch of .png's which contain some alpha (transparency) but which have a uniformly white background. The png's look fine individually, but in the resulting .gif some ...
- 423
0
votes
0
answers
129
views
Put delay on a particular image / loop it , while merging several gifs using convert (Imagemagick)
I am trying to merge several gif images using convert of imagemagick. Each image has its own position and size.
Suppose
img1.gif is having 8 frames
img2.gif is having 2 frames
In the ...
- 200
2
votes
0
answers
575
views
ImageMagick android convert jpegs to gif
I try to speed up gif encoding, using ImageMagick port for Android. Everything I found about Magick is terminal commands, but no tutorial or some demo for how to do it programmatically. Here is my ...
- 4,329