How to Reverse a Video
One of my favorite media utilities is ffmpeg. This command line utility allows us to do some pretty amazing stuff like;
Every once in a while I see a meme or funny video that reverses a video for effect. Since ffmpeg does just about everything I can imagine, I turned to it.
To reverse a video, use the following ffmpeg command:
ffmpeg -i my-video.mp4 -vf reverse my-video.mp4
Remember that you can simply change the video format via the output video's file extension, so you could export to anything from a webm to an animated GIF!
![CSS vs. JS Animation: Which is Faster?]()
How is it possible that JavaScript-based animation has secretly always been as fast — or faster — than CSS transitions? And, how is it possible that Adobe and Google consistently release media-rich mobile sites that rival the performance of native apps?
This article serves as a point-by-point...
![Vibration API]()
Many of the new APIs provided to us by browser vendors are more targeted toward the mobile user than the desktop user. One of those simple APIs the Vibration API. The Vibration API allows developers to direct the device, using JavaScript, to vibrate in...
![Resize an Image Using Canvas, Drag and Drop and the File API]()
Recently I was asked to create a user interface that allows someone to upload an image
to a server (among other things) so that it could be used in the various web sites my
company provides to its clients. Normally this would be an easy task—create a...
![Sexy Opacity Animation with MooTools or jQuery]()
A big part of the sexiness that is Apple software is Apple's use of opacity. Like seemingly every other Apple user interface technique, it needs to be ported to the web (</fanboy>). I've put together an example of a sexy opacity animation technique...
