Media Tutorials

• By David WalshMay 12, 2015

  How to Watermark Images and Videos

  As a content creator I respect an author or artist's desire to protect their work.  I don't consider this blog art but I'm annoyed as hell when I see my blog posts show up on another site.  I'm lucky enough that my blog is mostly recreational but many...

• By David WalshMay 6, 2015

  Resize an Animated GIF

  Animated GIFs are images but you can't really handle them link other types of images, like PNGs or JPEGs or even WebPs.  GIFs are kind of a video file, because they have frames, but there's no real control over how they play or loop.  My favorite image...

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• By David WalshApril 30, 2015

  Get HTML5 Camera and Video on iPhone

  One of the questions I get asked most often via my contact form is how to get access to the camera and video recorder on the iPhone from within the browser.  It's a valid question, one that I've not come across in the needs of...

• By David WalshApril 29, 2015

  Prevent Animated GIFs from Looping

  We all know animated GIFs put the "fun" in "functional." I've recently written incredible posts with regard to animated GIF images, including: Detect if a GIF is Animated Merge GIFs with gifsicle Optimize GIF Images Convert Video to GIF or GIF to Video Get the...

• By David WalshApril 26, 2015

  Access Mac Camera by Command Line

  With all of my recent command line tutorials, I've really gotten excited about the shell's simplicity and realized the true power of using the underlying technology of pretty UIs.  Since I work from home, I spend a lot of time on video calls, so when...

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• By David WalshApril 21, 2015

  Create an Image Preview from a Video

  Visuals are everything when it comes to media.  When I'm trying to decide whether to watch a video on Netflix, it would be awesome to see a trailer of some kind, but alas that isn't available.  When I'm looking to download a video on my computer...

• By David WalshApril 21, 2015

  Merge GIFs with gifsicle

  Creating a GIF from a video is fairly simple at this point, as I pointed out in Convert Video to GIF or GIF to Video, but working with multiple GIFs is something many people would like to do.  The top GIF manipulation library for years has been

• By Matt ShullApril 20, 2015

  WebP Images & Performance

  It's said that a picture is worth a thousand words, but online, a picture can be worth a thousand kilobytes or more! HTTP Archive shows that images make up 64% of a Web page's total size on average. With this in mind, image...

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• By David WalshApril 16, 2015

  Optimize GIFs

  I've written a lot about converting different media types lately, especially GIFs, including Convert Video to GIF or GIF to Video, Detect if a GIF is Animated, and Get the First Frame of an Animated GIF with ImageMagick, but whether it's ImageMagick or ffmpeg doing the work, GIFs do not always...

• By David WalshApril 15, 2015

  Convert Video to GIF or GIF to Video

  I feel like GIFs are more popular now than back in the day when they were just about the only way to have moving imagery on the web.  They were so useful because crap like Real Video Player, Windows Media, and other crap formats all required a...