Modifying visual media via code has always been a fascination of mine. Probably because I’m not a designer and I tend to stick to what I’m good at. One visual effect I love is seeing video reversed — it provides a sometimes hilarious perspective on a given event.
Take this reversed water effect for example:
To reverse an animated GIF or video, you can use the ImageMagick library:
convert water-forward.gif -coalesce -reverse -quiet -layers OptimizePlus -loop 0 water-reversed.gif
If you’re interested in media engineering, check out my previous ImageMagick tutorials. These awesome media libraries are as close to an artist I will ever get!
Send Text Messages with PHP
Kids these days, I tell ya. All they care about is the technology. The video games. The bottled water. Oh, and the texting, always the texting. Back in my day, all we had was…OK, I had all of these things too. But I still don’t get…
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?
JavaScript Copy to Clipboard
“Copy to clipboard” functionality is something we all use dozens of times daily but the client side API around it has always been lacking; some older APIs and browser implementations required a scary “are you sure?”-style dialog before the content would be copied to clipboard — not great for…
Fullscreen API
As we move toward more true web applications, our JavaScript APIs are doing their best to keep up. One very simple but useful new JavaScript API is the Fullscreen API. The Fullscreen API provides a programmatic way to request fullscreen display from the user, and exit…
