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Responsive Media in HTML5

By : Alex Libby

Responsive Media in HTML5

By: Alex Libby

Overview of this book

If you are a web designer with a good understanding of CSS, jQuery, and HTML, but new to creating responsive sites, then this book is for you. The prerequisite is a good understanding of CSS and HTML; the demos will suit those who have some prior knowledge of Less CSS, WordPress, or Bootstrap.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Working with Responsive Images

1. Working with Responsive Images

Getting started

Beginning with fluid images

Catering to vendor prefixes and image formats

Catering to different platforms

Catering to HD or retina images

Using sprites to display responsive images

Determining the available viewport for use

Working out media queries

Using pure JS to determine page breakpoints

Using data tags to allow bandwidth constraints

Working with the <picture> tags

Working with the SVG image format for scalability

Using image icons for scalability

Building a responsive carousel

Creating responsive maps using Google Maps

Summary

2. Adding Responsive Video Content

2. Adding Responsive Video Content

Getting ready

Determining support for <video> formats

Choosing the right format

Embedding HTML5 video content

Determining an available viewport for use

Catering to fallback support

Using JS libraries to provide support

Catering to different platforms

Allowing for vendor prefixes

Displaying full-size videos

Summary

3. Mixing Content

3. Mixing Content

Mixing video and image content on the same page

Considering the pitfalls of mixing content

Using preloaders to reduce delays

Adding lazy loading support to our pages

Making allowances for mobile devices

Summary

4. Testing Responsive Media

4. Testing Responsive Media

A starting point for testing

Considering pitfalls of responsive testing

Testing responsive sites with online tools

Using tools to determine speed

Summary

5. Using Frameworks

5. Using Frameworks

Introducing our three examples

Adding responsive media to a CMS

Implementing responsive media in Bootstrap

Using Less CSS to create responsive content

Summary

Index

Index

Customer Reviews

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Determining an available viewport for use

If you have spent any time developing content for responsive layouts, you will have no doubt come across media queries. The same applied to videos; you could typically see something akin to the following (simplified) example:

<video controls>
  <source src="the-sky-is-calling-large.mp4" media="screen and (min-width:800px)">
  <source src="the-sky-is-calling-small.mp4" media="screen and (max-width:799px)">
</video>

Unfortunately, most browsers have since removed support for media queries. This is largely due to the poor user experience we get if the video is suddenly interrupted when resizing the screen. Fortunately, we can produce similar effects, although we need to resort to JavaScript or jQuery to achieve this. In this next example, we're going to show a small video if the screen is resized to a small window, or hide it when displayed in full screen. Let's take a look at how we can achieve this:

We'll begin with extracting...

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