Popular:
 Building Resilient Systems on AWS: Learn how to design and implement a resilient, highly available, fault-tolerant infrastructure on AWS.

Count Frames in an Animated GIF

By  on  

The animated GIF always makes me chuckle; on one hand they seem like a relic of the "old web", on the other hand they aren't going anywhere and their meme-like presence seem to only make them more popular.  If you browse through my media blog posts archives, you'll notice that I've written a ton about animated GIFs, including how to tell if a gif is animated, how to get a screenshot of the first frame, converting GIF to WEBP, and more.

My curiosity recently brought me to asking how to detect how many frames were present in an animated GIF; as expected, ImageMagick had the answer:

identify -format "%n\n" bitcoin.gif | head -n 1
>> 101

What is this calculation useful for?  I suppose if you have a media management site you could show each frame to a user so they could choose a poster when converting to video.  In any event, I was curious and simply had to find out!

Request Metrics real user monitoring
Request Metrics real user monitoring
Request Metrics real user monitoring
Request Metrics real user monitoring

Recent Features

Incredible Demos

  • By
    Record Text Selections Using MooTools or jQuery AJAX

    One technique I'm seeing more and more these days (CNNSI.com, for example) is AJAX recording of selected text. It makes sense -- if you detect users selecting the terms over and over again, you can probably assume your visitors are searching that term on Google...

  • By
    Smooth Scrolling with MooTools Fx.SmoothScroll

    I get quite a few support requests for my previous MooTools SmoothScroll article and the issue usually boils down to the fact that SmoothScroll has become Fx.SmoothScroll. Here's a simple usage of Fx.SmoothScroll. The HTML The only HTML requirement for Fx.SmoothScroll is that all named...

Discussion

    Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!