ImageMagick – Creating a GIF Animation from PNG Files

conversiongraphicsimagemagick

Is there a tool to create a gif animation from a set of png files?

I tried the convert command from the ImageMagick suite, but this doesn't always succeed. Also, I have several issues with this:

I can't tell what the progress is.
No matter what I try, the -delay flag doesn't change the frame rate of the gif animation.
convert determines the frame order based upon the alphabetical order of the files names. This means that name500.png will be placed right after name50.png and not after name450.png I can fix this by adding 0's but this is annoying.

Best Answer

Newer versions of ffmpeg have no -sameq (see faq) but do have GIF support.
ffmpeg -i %03d.png output.gif
Where %03d is the frame ID in 3 digits.

You may also try to use ffmpeg to create a movie out of a sequence of images and then convert the movie to a GIF animation (again using ffmpeg).

# cf. http://pages.uoregon.edu/noeckel/MakeMovie.html

# first convert an image sequence to a movie
ffmpeg -sameq -i %03d.jpg output.mp4

# ... and then convert the movie to a GIF animation
ffmpeg -i output.mp4 -pix_fmt rgb24 -s qcif -loop_output 0 output.gif

Related Solutions

Convert OGV video to GIF animation

take a look at this: https://askubuntu.com/questions/107726/how-to-create-animated-gif-images-of-a-screencast/107735#107735

..... After the Desktop Recorder has saved the recording into an OGV video, MPlayer will be used to capture JPEG screenshots, saving them into the 'output' directory.

On a terminal:

mplayer -ao null <video file name> -vo jpeg:outdir=output

Use ImageMagick to convert the screenshots into an animated gifs.

convert output/* output.gif

you can optimize the screenshots this way:

convert output.gif -fuzz 10% -layers Optimize optimised.gif

Converting pdf pictures to png files makes pictures too small

Use the -density option to define how many pixels you want per inch; the default is -density 72.

Also, since you're using Bash, you can directly manipulate the file name in the loop:

for src in *.pdf ; do
    convert -trim "${src}" "${src%.*}.png"
done

without having to do a post-rename. ${src%.*} in Bash evaluates to the contents of src, but with everything following a final . removed. (If src does not contain ., ${src%.*} evaluates to the same as $src.)

Best Answer

Related Solutions

Convert OGV video to GIF animation

Converting pdf pictures to png files makes pictures too small

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