Cloudinary Blog

Video transcoding, resizing, cropping and manipulating made easy

Cloud-Based Video Manipulation and Transcoding Made Easy

Videos are becoming more prolific with people having the capability to capture videos with a wide variety of cameras, including smartphone cameras that are available almost everywhere. Web and mobile applications that display videos online can be faced with a challenge when the videos are created or uploaded from different devices and in various formats, and then need to be delivered in a multitude of resolutions and aspect ratios to various web browsers, laptops and all kinds of mobile devices in HTML5 web friendly video formats.

On top of that, the videos may need to be further manipulated to fit the graphic design of the web application, whether that entails cropping, resizing, rotating, trimming, adding overlays, or even applying filters and various effects.

Developing and then supporting the backend required to transform videos from hi-res originals to HTML5 web friendly video formats that fit the graphic design of your application is a non-trivial technical process that requires considerable computational power. There are also many advanced tuning properties related to video encoding in the trade off between visual quality and file size, and doing this correctly can save a lot of bandwidth and load videos faster. Many developers spend considerable time building in-house solutions to support online videos.

Cloudinary offers a solution to all your development needs with:

  • No need to install any complex software - all video processing takes place in the cloud, together with an Interactive Media Library for browsing through your media files and SDKs for all popular web and mobile development frameworks for easy integration with HTML5 sites and mobile apps.
  • No need to learn how to fine tune video creation - all the best practices are already automatically applied with conversion to all formats (MP4, WebM, OGV, FLV) for optimized viewing on all web browsers and mobile devices, improving your website's loading speed while reducing your bandwidth requirements and IT costs.
  • No need to write complex code for video processing - all code is already available as a service with a URL based API for video transcoding and manipulation.
  • No need to deploy servers for video processing - it's a hosted solution.
  • No need to pre-generate all video manipulations - video transformations are done on the fly, streamed via a CDN.

Cloud-based video manipulation

Manipulating videos to fit the graphic design of the web application doesn't need to be complicated and hard to implement even if the video needs to be delivered in different sizes, formats and resolutions while supporting all the different web browsers, laptops and mobile devices. Cloudinary's rich set of video manipulation capabilities include: resizing and cropping, rotating, modifying quality, adjusting video codec settings, controlling bit rate, video trimming, thumbnail generation, conversion to animated GIF, adding text, image and video overlays, special effects and lots more. Videos are delivered using dynamic URLs with on-the-fly transcoding and real-time manipulation while streaming the video content via a worldwide CDN with streaming support for the best performance.

The following are some examples of manipulating a video called funny_dog that was uploaded to Cloudinary.

Ruby:
cl_video_tag("funny_dog")
PHP:
cl_video_tag("funny_dog")
Python:
CloudinaryVideo("funny_dog").video()
Node.js:
cloudinary.video("funny_dog")
Java:
cloudinary.url().videoTag("funny_dog");
JS:
cloudinary.videoTag('funny_dog').toHtml();
jQuery:
$.cloudinary.video("funny_dog")
React:
<Video publicId="funny_dog" >

</Video>
Angular:
<cl-video public-id="funny_dog" >

</cl-video>
.Net:
cloudinary.Api.UrlVideoUp.BuildVideoTag("funny_dog")
Android:
MediaManager.get().url().resourceType("video").generate("funny_dog.mp4");
iOS:
cloudinary.createUrl().setResourceType("video").generate("funny_dog.mp4")

Video resizing and cropping

Resize the video to a width of 200 pixels and a height of 150 pixels using the fill cropping mode and focusing on the bottom of the video in the case that only a portion of the video is used:

Ruby:
cl_video_tag("funny_dog", :width=>200, :height=>150, :gravity=>"south", :crop=>"fill")
PHP:
cl_video_tag("funny_dog", array("width"=>200, "height"=>150, "gravity"=>"south", "crop"=>"fill"))
Python:
CloudinaryVideo("funny_dog").video(width=200, height=150, gravity="south", crop="fill")
Node.js:
cloudinary.video("funny_dog", {width: 200, height: 150, gravity: "south", crop: "fill"})
Java:
cloudinary.url().transformation(new Transformation().width(200).height(150).gravity("south").crop("fill")).videoTag("funny_dog");
JS:
cloudinary.videoTag('funny_dog', {width: 200, height: 150, gravity: "south", crop: "fill"}).toHtml();
jQuery:
$.cloudinary.video("funny_dog", {width: 200, height: 150, gravity: "south", crop: "fill"})
React:
<Video publicId="funny_dog" >
  <Transformation width="200" height="150" gravity="south" crop="fill" />
</Video>
Angular:
<cl-video public-id="funny_dog" >
  <cl-transformation width="200" height="150" gravity="south" crop="fill">
  </cl-transformation>
</cl-video>
.Net:
cloudinary.Api.UrlVideoUp.Transform(new Transformation().Width(200).Height(150).Gravity("south").Crop("fill")).BuildVideoTag("funny_dog")
Android:
MediaManager.get().url().transformation(new Transformation().width(200).height(150).gravity("south").crop("fill")).resourceType("video").generate("funny_dog.mp4");
iOS:
cloudinary.createUrl().setResourceType("video").setTransformation(CLDTransformation().setWidth(200).setHeight(150).setGravity("south").setCrop("fill")).generate("funny_dog.mp4")

Resize the video to a width of 300 pixels and a height of 200 pixels using the pad cropping mode and use a blue background in the case that the video needs padding:

Ruby:
cl_video_tag("funny_dog", :width=>300, :height=>200, :background=>"#0e4167", :crop=>"pad")
PHP:
cl_video_tag("funny_dog", array("width"=>300, "height"=>200, "background"=>"#0e4167", "crop"=>"pad"))
Python:
CloudinaryVideo("funny_dog").video(width=300, height=200, background="#0e4167", crop="pad")
Node.js:
cloudinary.video("funny_dog", {width: 300, height: 200, background: "#0e4167", crop: "pad"})
Java:
cloudinary.url().transformation(new Transformation().width(300).height(200).background("#0e4167").crop("pad")).videoTag("funny_dog");
JS:
cloudinary.videoTag('funny_dog', {width: 300, height: 200, background: "#0e4167", crop: "pad"}).toHtml();
jQuery:
$.cloudinary.video("funny_dog", {width: 300, height: 200, background: "#0e4167", crop: "pad"})
React:
<Video publicId="funny_dog" >
  <Transformation width="300" height="200" background="#0e4167" crop="pad" />
</Video>
Angular:
<cl-video public-id="funny_dog" >
  <cl-transformation width="300" height="200" background="#0e4167" crop="pad">
  </cl-transformation>
</cl-video>
.Net:
cloudinary.Api.UrlVideoUp.Transform(new Transformation().Width(300).Height(200).Background("#0e4167").Crop("pad")).BuildVideoTag("funny_dog")
Android:
MediaManager.get().url().transformation(new Transformation().width(300).height(200).background("#0e4167").crop("pad")).resourceType("video").generate("funny_dog.mp4");
iOS:
cloudinary.createUrl().setResourceType("video").setTransformation(CLDTransformation().setWidth(300).setHeight(200).setBackground("#0e4167").setCrop("pad")).generate("funny_dog.mp4")

Video overlays, trimming, transcoding and more

Scale the width to 300 pixels, the height to 200 pixels, set the quality to 40 and add an overlay saying "Funny Dog" in Roboto 30px white text starting at the 3 second mark and 10 pixels from the bottom of the video:

Ruby:
cl_video_tag("funny_dog", :transformation=>[
  {:width=>300, :height=>200, :quality=>40, :crop=>"scale"},
  {:overlay=>{:font_family=>"Roboto", :font_size=>30, :font_weight=>"bold", :text=>"Funny%20Dog"}, :color=>"white", :gravity=>"south", :y=>10, :start_offset=>"3"}
  ])
PHP:
cl_video_tag("funny_dog", array("transformation"=>array(
  array("width"=>300, "height"=>200, "quality"=>40, "crop"=>"scale"),
  array("overlay"=>array("font_family"=>"Roboto", "font_size"=>30, "font_weight"=>"bold", "text"=>"Funny%20Dog"), "color"=>"white", "gravity"=>"south", "y"=>10, "start_offset"=>"3")
  )))
Python:
CloudinaryVideo("funny_dog").video(transformation=[
  {'width': 300, 'height': 200, 'quality': 40, 'crop': "scale"},
  {'overlay': {'font_family': "Roboto", 'font_size': 30, 'font_weight': "bold", 'text': "Funny%20Dog"}, 'color': "white", 'gravity': "south", 'y': 10, 'start_offset': "3"}
  ])
Node.js:
cloudinary.video("funny_dog", {transformation: [
  {width: 300, height: 200, quality: 40, crop: "scale"},
  {overlay: {font_family: "Roboto", font_size: 30, font_weight: "bold", text: "Funny%20Dog"}, color: "white", gravity: "south", y: 10, start_offset: "3"}
  ]})
Java:
cloudinary.url().transformation(new Transformation()
  .width(300).height(200).quality(40).crop("scale").chain()
  .overlay(new TextLayer().fontFamily("Roboto").fontSize(30).fontWeight("bold").text("Funny%20Dog")).color("white").gravity("south").y(10).startOffset("3")).videoTag("funny_dog");
JS:
cloudinary.videoTag('funny_dog', {transformation: [
  {width: 300, height: 200, quality: 40, crop: "scale"},
  {overlay: new cloudinary.TextLayer().fontFamily("Roboto").fontSize(30).fontWeight("bold").text("Funny%20Dog"), color: "white", gravity: "south", y: 10, startOffset: "3"}
  ]}).toHtml();
jQuery:
$.cloudinary.video("funny_dog", {transformation: [
  {width: 300, height: 200, quality: 40, crop: "scale"},
  {overlay: new cloudinary.TextLayer().fontFamily("Roboto").fontSize(30).fontWeight("bold").text("Funny%20Dog"), color: "white", gravity: "south", y: 10, start_offset: "3"}
  ]})
React:
<Video publicId="funny_dog" >
  <Transformation width="300" height="200" quality="40" crop="scale" />
  <Transformation overlay={{fontFamily: "Roboto", fontSize: 30, fontWeight: "bold", text: "Funny%20Dog"}} color="white" gravity="south" y="10" startOffset="3" />
</Video>
Angular:
<cl-video public-id="funny_dog" >
  <cl-transformation width="300" height="200" quality="40" crop="scale">
  </cl-transformation>
  <cl-transformation overlay="text:Roboto_30px_bold:Funny%20Dog" color="white" gravity="south" y="10" start-offset="3">
  </cl-transformation>
</cl-video>
.Net:
cloudinary.Api.UrlVideoUp.Transform(new Transformation()
  .Width(300).Height(200).Quality(40).Crop("scale").Chain()
  .Overlay(new TextLayer().FontFamily("Roboto").FontSize(30).FontWeight("bold").Text("Funny%20Dog")).Color("white").Gravity("south").Y(10).StartOffset("3")).BuildVideoTag("funny_dog")
Android:
MediaManager.get().url().transformation(new Transformation()
  .width(300).height(200).quality(40).crop("scale").chain()
  .overlay(new TextLayer().fontFamily("Roboto").fontSize(30).fontWeight("bold").text("Funny%20Dog")).color("white").gravity("south").y(10).startOffset("3")).resourceType("video").generate("funny_dog.mp4");
iOS:
cloudinary.createUrl().setResourceType("video").setTransformation(CLDTransformation()
  .setWidth(300).setHeight(200).setQuality(40).setCrop("scale").chain()
  .setOverlay("text:Roboto_30px_bold:Funny%20Dog").setColor("white").setGravity("south").setY(10).setStartOffset("3")).generate("funny_dog.mp4")

Transcode the video to the webm format and apply the best codec settings for web viewing with the vc_auto parameter, add the cloudinary_icon image overlay with a width of 160 pixels and 10 pixels from the northeast corner with a brightness of 200% and an opacity of 70%, and adjust the total width to 350 pixels and the height to 150 pixels while padding with a blue background:

Ruby:
cl_video_tag("funny_dog", :transformation=>[
  {:video_codec=>"auto"},
  {:overlay=>"cloudinary_icon", :gravity=>"north_east", :effect=>"brightness:200", :opacity=>70, :x=>10, :y=>10, :width=>160},
  {:width=>350, :height=>150, :background=>"#0e4167", :crop=>"pad"}
  ])
PHP:
cl_video_tag("funny_dog", array("transformation"=>array(
  array("video_codec"=>"auto"),
  array("overlay"=>"cloudinary_icon", "gravity"=>"north_east", "effect"=>"brightness:200", "opacity"=>70, "x"=>10, "y"=>10, "width"=>160),
  array("width"=>350, "height"=>150, "background"=>"#0e4167", "crop"=>"pad")
  )))
Python:
CloudinaryVideo("funny_dog").video(transformation=[
  {'video_codec': "auto"},
  {'overlay': "cloudinary_icon", 'gravity': "north_east", 'effect': "brightness:200", 'opacity': 70, 'x': 10, 'y': 10, 'width': 160},
  {'width': 350, 'height': 150, 'background': "#0e4167", 'crop': "pad"}
  ])
Node.js:
cloudinary.video("funny_dog", {transformation: [
  {video_codec: "auto"},
  {overlay: "cloudinary_icon", gravity: "north_east", effect: "brightness:200", opacity: 70, x: 10, y: 10, width: 160},
  {width: 350, height: 150, background: "#0e4167", crop: "pad"}
  ]})
Java:
cloudinary.url().transformation(new Transformation()
  .videoCodec("auto").chain()
  .overlay(new Layer().publicId("cloudinary_icon")).gravity("north_east").effect("brightness:200").opacity(70).x(10).y(10).width(160).chain()
  .width(350).height(150).background("#0e4167").crop("pad")).videoTag("funny_dog");
JS:
cloudinary.videoTag('funny_dog', {transformation: [
  {videoCodec: "auto"},
  {overlay: new cloudinary.Layer().publicId("cloudinary_icon"), gravity: "north_east", effect: "brightness:200", opacity: 70, x: 10, y: 10, width: 160},
  {width: 350, height: 150, background: "#0e4167", crop: "pad"}
  ]}).toHtml();
jQuery:
$.cloudinary.video("funny_dog", {transformation: [
  {video_codec: "auto"},
  {overlay: new cloudinary.Layer().publicId("cloudinary_icon"), gravity: "north_east", effect: "brightness:200", opacity: 70, x: 10, y: 10, width: 160},
  {width: 350, height: 150, background: "#0e4167", crop: "pad"}
  ]})
React:
<Video publicId="funny_dog" >
  <Transformation videoCodec="auto" />
  <Transformation overlay="cloudinary_icon" gravity="north_east" effect="brightness:200" opacity="70" x="10" y="10" width="160" />
  <Transformation width="350" height="150" background="#0e4167" crop="pad" />
</Video>
Angular:
<cl-video public-id="funny_dog" >
  <cl-transformation video-codec="auto">
  </cl-transformation>
  <cl-transformation overlay="cloudinary_icon" gravity="north_east" effect="brightness:200" opacity="70" x="10" y="10" width="160">
  </cl-transformation>
  <cl-transformation width="350" height="150" background="#0e4167" crop="pad">
  </cl-transformation>
</cl-video>
.Net:
cloudinary.Api.UrlVideoUp.Transform(new Transformation()
  .VideoCodec("auto").Chain()
  .Overlay(new Layer().PublicId("cloudinary_icon")).Gravity("north_east").Effect("brightness:200").Opacity(70).X(10).Y(10).Width(160).Chain()
  .Width(350).Height(150).Background("#0e4167").Crop("pad")).BuildVideoTag("funny_dog")
Android:
MediaManager.get().url().transformation(new Transformation()
  .videoCodec("auto").chain()
  .overlay(new Layer().publicId("cloudinary_icon")).gravity("north_east").effect("brightness:200").opacity(70).x(10).y(10).width(160).chain()
  .width(350).height(150).background("#0e4167").crop("pad")).resourceType("video").generate("funny_dog.webm");
iOS:
cloudinary.createUrl().setResourceType("video").setTransformation(CLDTransformation()
  .setVideoCodec("auto").chain()
  .setOverlay("cloudinary_icon").setGravity("north_east").setEffect("brightness:200").setOpacity(70).setX(10).setY(10).setWidth(160).chain()
  .setWidth(350).setHeight(150).setBackground("#0e4167").setCrop("pad")).generate("funny_dog.webm")

There are plenty of additional video and image manipulation options that you can choose from, we have only shown a few here to give a small taste of how easy it is to manipulate your videos. See our video documentation for more details and examples.

Creating an image thumbnail from a video

You can also easily create image thumbnails of any frame in a video and then apply any of Cloudinary's image transformations to the result. For example, to create an image thumbnail of the frame at 1 second in the funny_dog video in JPG format, scaled to a width of 250 pixels and a height of 150 pixels:

Ruby:
cl_image_tag("funny_dog.jpg", :width=>250, :height=>150, :start_offset=>"1", :crop=>"scale", :resource_type=>"video")
PHP:
cl_image_tag("funny_dog.jpg", array("width"=>250, "height"=>150, "start_offset"=>"1", "crop"=>"scale", "resource_type"=>"video"))
Python:
CloudinaryVideo("funny_dog.jpg").image(width=250, height=150, start_offset="1", crop="scale")
Node.js:
cloudinary.image("funny_dog.jpg", {width: 250, height: 150, start_offset: "1", crop: "scale", resource_type: "video"})
Java:
cloudinary.url().transformation(new Transformation().width(250).height(150).startOffset("1").crop("scale")).resourceType("video").imageTag("funny_dog.jpg");
JS:
cloudinary.videoTag('funny_dog.jpg', {width: 250, height: 150, startOffset: "1", crop: "scale"}).toHtml();
jQuery:
$.cloudinary.image("funny_dog.jpg", {width: 250, height: 150, start_offset: "1", crop: "scale", resource_type: "video"})
React:
<Video publicId="funny_dog.jpg" resourceType="video">
  <Transformation width="250" height="150" startOffset="1" crop="scale" />
</Video>
Angular:
<cl-video public-id="funny_dog.jpg" resource-type="video">
  <cl-transformation width="250" height="150" start-offset="1" crop="scale">
  </cl-transformation>
</cl-video>
.Net:
cloudinary.Api.UrlVideoUp.Transform(new Transformation().Width(250).Height(150).StartOffset("1").Crop("scale")).BuildImageTag("funny_dog.jpg")
Android:
MediaManager.get().url().transformation(new Transformation().width(250).height(150).startOffset("1").crop("scale")).resourceType("video").generate("funny_dog.jpg");
iOS:
cloudinary.createUrl().setResourceType("video").setTransformation(CLDTransformation().setWidth(250).setHeight(150).setStartOffset("1").setCrop("scale")).generate("funny_dog.jpg")
jpg created from funny_dog.mp4 scaled to 250x150

To create a circular 300x300 sharpened image thumbnail in JPG format of the frame at the 15% mark of the funny_dog video, and then adding the cloudinary_icon image overlay with a north gravity and resizing to a width of 50% of the total image with 40% opacity:

Ruby:
cl_image_tag("funny_dog.jpg", :resource_type=>"video", :transformation=>[
  {:width=>300, :height=>300, :radius=>"max", :effect=>"sharpen", :start_offset=>"15p", :crop=>"fill"},
  {:overlay=>"cloudinary_icon", :width=>0.5, :flags=>"relative", :opacity=>40, :gravity=>"north"}
  ])
PHP:
cl_image_tag("funny_dog.jpg", array("resource_type"=>"video", "transformation"=>array(
  array("width"=>300, "height"=>300, "radius"=>"max", "effect"=>"sharpen", "start_offset"=>"15p", "crop"=>"fill"),
  array("overlay"=>"cloudinary_icon", "width"=>0.5, "flags"=>"relative", "opacity"=>40, "gravity"=>"north")
  )))
Python:
CloudinaryVideo("funny_dog.jpg").image(transformation=[
  {'width': 300, 'height': 300, 'radius': "max", 'effect': "sharpen", 'start_offset': "15p", 'crop': "fill"},
  {'overlay': "cloudinary_icon", 'width': 0.5, 'flags': "relative", 'opacity': 40, 'gravity': "north"}
  ])
Node.js:
cloudinary.image("funny_dog.jpg", {resource_type: "video", transformation: [
  {width: 300, height: 300, radius: "max", effect: "sharpen", start_offset: "15p", crop: "fill"},
  {overlay: "cloudinary_icon", width: "0.5", flags: "relative", opacity: 40, gravity: "north"}
  ]})
Java:
cloudinary.url().transformation(new Transformation()
  .width(300).height(300).radius("max").effect("sharpen").startOffset("15p").crop("fill").chain()
  .overlay(new Layer().publicId("cloudinary_icon")).width(0.5).flags("relative").opacity(40).gravity("north")).resourceType("video").imageTag("funny_dog.jpg");
JS:
cloudinary.videoTag('funny_dog.jpg', {transformation: [
  {width: 300, height: 300, radius: "max", effect: "sharpen", startOffset: "15p", crop: "fill"},
  {overlay: new cloudinary.Layer().publicId("cloudinary_icon"), width: "0.5", flags: "relative", opacity: 40, gravity: "north"}
  ]}).toHtml();
jQuery:
$.cloudinary.image("funny_dog.jpg", {resource_type: "video", transformation: [
  {width: 300, height: 300, radius: "max", effect: "sharpen", start_offset: "15p", crop: "fill"},
  {overlay: new cloudinary.Layer().publicId("cloudinary_icon"), width: "0.5", flags: "relative", opacity: 40, gravity: "north"}
  ]})
React:
<Video publicId="funny_dog.jpg" resourceType="video">
  <Transformation width="300" height="300" radius="max" effect="sharpen" startOffset="15p" crop="fill" />
  <Transformation overlay="cloudinary_icon" width="0.5" flags="relative" opacity="40" gravity="north" />
</Video>
Angular:
<cl-video public-id="funny_dog.jpg" resource-type="video">
  <cl-transformation width="300" height="300" radius="max" effect="sharpen" start-offset="15p" crop="fill">
  </cl-transformation>
  <cl-transformation overlay="cloudinary_icon" width="0.5" flags="relative" opacity="40" gravity="north">
  </cl-transformation>
</cl-video>
.Net:
cloudinary.Api.UrlVideoUp.Transform(new Transformation()
  .Width(300).Height(300).Radius("max").Effect("sharpen").StartOffset("15p").Crop("fill").Chain()
  .Overlay(new Layer().PublicId("cloudinary_icon")).Width(0.5).Flags("relative").Opacity(40).Gravity("north")).BuildImageTag("funny_dog.jpg")
Android:
MediaManager.get().url().transformation(new Transformation()
  .width(300).height(300).radius("max").effect("sharpen").startOffset("15p").crop("fill").chain()
  .overlay(new Layer().publicId("cloudinary_icon")).width(0.5).flags("relative").opacity(40).gravity("north")).resourceType("video").generate("funny_dog.jpg");
iOS:
cloudinary.createUrl().setResourceType("video").setTransformation(CLDTransformation()
  .setWidth(300).setHeight(300).setRadius("max").setEffect("sharpen").setStartOffset("15p").setCrop("fill").chain()
  .setOverlay("cloudinary_icon").setWidth(0.5).setFlags("relative").setOpacity(40).setGravity("north")).generate("funny_dog.jpg")
Sharpened, rounded jpg created from the frame at 15% of funny_dog.mp4 filled to 300x300 with an overlay

Summary

Video uploading and delivery has become more and more popular and developers face a significant challenge handling these video files for embedding in their web and mobile apps while maintaining complex clusters to handle video uploading and transcoding. Cloudinary eliminates all the R&D work involved, and with a single line of code videos are uploaded to the cloud, and then with dynamic URLs, videos are automatically converted to all required video formats and manipulated to fit the graphic design of web applications and the various devices and resolutions.

The video manipulation features are available to all our free and paid plans. If you don't have a Cloudinary account, you are welcome to sign up to our free account and try it out.

Recent Blog Posts

Hipcamp Optimizes Images and Improves Page Load Times With Cloudinary

When creating a website that allows campers to discover great destinations, Hipcamp put a strong emphasis on featuring high-quality images that showcased the list of beautiful locations, regardless of whether users accessed the site on a desktop, tablet, or phone. Since 2015, Hipcamp has relied on Cloudinary’s image management solution to automate cropping and image optimization, enabling instant public delivery of photos, automatic tagging based on content recognition, and faster loading of webpages. In addition, Hipcamp was able to maintain the high standards it holds for the look and feel of its website.

Read more
New Image File Format: FUIF: Why Do We Need a New Image Format

In my last post, I introduced FUIF, a new, free, and universal image format I’ve created. In this post and other follow-up pieces, I will explain the why, what, and how of FUIF.

Even though JPEG is still the most widely-used image file format on the web, it has limitations, especially the subset of the format that has been implemented in browsers and that has, therefore, become the de facto standard. Because JPEG has a relatively verbose header, it cannot be used (at least not as is) for low-quality image placeholders (LQIP), for which you need a budget of a few hundred bytes. JPEG cannot encode alpha channels (transparency); it is restricted to 8 bits per channel; and its entropy coding is no longer state of the art. Also, JPEG is not fully “responsive by design.” There is no easy way to find a file’s truncation offsets and it is limited to a 1:8 downscale (the DC coefficients). If you want to use the same file for an 8K UHD display (7,680 pixels wide) and for a smart watch (320 pixels wide), 1:8 is not enough. And finally, JPEG does not work well with nonphotographic images and cannot do fully lossless compression.

Read more
 New Image File Format: FUIF:Lossy, Lossless, and Free

I've been working to create a new image format, which I'm calling FUIF, or Free Universal Image Format. That’s a rather pretentious name, I know. But I couldn’t call it the Free Lossy Image Format (FLIF) because that acronym is not available any more (see below) and FUIF can do lossless, too, so it wouldn’t be accurate either.

Read more
Optimizing Video Streaming and Delivery: Q&A with Doug Sillars

Doug Sillars, a digital nomad and a freelance mobile-performance expert, answers questions about video streaming and delivery, website optimization, and more.

Doug Sillars, a freelance mobile-performance expert and developer advocate, is a Google Developer Expert and the author of O’Reilly’s High Performance Android Apps. Given his extensive travels across the globe—from the UK to Siberia—with his wife, kids, and 11-year-old dog, Max, he has been referred to as a “digital nomad.” So far in 2018, Doug has spoken at more than 75 meetups and conferences!

Read more