Re: [ferret_users] for multiple png or gif file for the use of animation

To: saurabh rathore <rohitsrb2020@xxxxxxxxx>

Subject: Re: [ferret_users] for multiple png or gif file for the use of animation

From: Ryo Furue <furue@xxxxxxxxxx>

Date: Fri, 18 Nov 2016 11:41:09 +0900

Cc: ferret users <ferret_users@xxxxxxxx>

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Hi Saurabh and ferret users,

This is off topic, but maybe useful to some people.

4) please make sure that for making animation from gif files you should have installed a software gifsicle. from a simple command in the linux prompt
sudo apt-get install gifsicle

a) For Mac users, assuming they use homebrew,

brew install gifsicle --with-x11

"--with-x11" is necessary to get gifview (see below).

b) Imagemagick can be used, too: For a simple GIF animation

convert -delay 100 ???.gif animation.gif

I haven't tried but other formats may be possible. Then there is the mighty ffmpeg.

c) "gifview" included in the gifsicle package is a wonderful animated-GIF viewer, especially for research purposes. The animated GIF file can be viewed as a slide show. You can stop the animation; you press a key and the next frame is displayed; you press another key and the previous frame is displayed. In this way, not only animation in t (time) but also "animation" in x, y, or z can be useful. There are other means to view a set of images as a slide show, but true animation isn't possible in that case. Animted GIF can be both under gifview (because animated GIF is sort of a fast slide show).

Regards,

Ryo