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!
![Page Visibility API]()
One event that's always been lacking within the document is a signal for when the user is looking at a given tab, or another tab. When does the user switch off our site to look at something else? When do they come back?
![Convert XML to JSON with JavaScript]()
If you follow me on Twitter, you know that I've been working on a super top secret mobile application using Appcelerator Titanium. The experience has been great: using JavaScript to create easy to write, easy to test, native mobile apps has been fun. My...
![Chris Coyier’s Favorite CodePen Demos II]()
Hey everyone! Before we get started, I just want to say it's damn hard to pick this few favorites on CodePen. Not because, as a co-founder of CodePen, I feel like a dad picking which kid he likes best (RUDE). But because there is just so...
![Create Tiny URLs with TinyURL, MooTools, and PHP]()
Since we've already figured out how to create TinyURL URLs remotely using PHP, we may as well create a small AJAX-enabled tiny URL creator. Using MooTools to do so is almost too easy.
The XHTML (Form)
We need an input box where the user will enter...