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Product(s)
Video Cloud
Brightcove Player
Role(s)
Player Developer
Topic(s)
Advanced HTML/CSS
Styling

In this topic, you will learn how to create a responsive video player that resizes based on screen dimensions.

Introduction

Responsive sizing means resizing player in response to changes in the size of the bounding window, while maintaining the aspect ratio, so that the video is not letterboxed (see image below).

Letterbox Sample

When you embed a video player in a page, you will notice that it does not resize with the browser window. This occurs because, by default, the video player is given a fixed width and height, preventing it from responding to changes in the browser. One aspect of responsive web design is ensuring that elements within your page adapt gracefully to different screen sizes.

White Vans Pool True Sea Authentic Vibes Aqua Vans Pool Authentic Sea Vibes Aqua True White The player

Resize the browser to see how the video player resizes while maintaining the video aspect ratio. You should not see any letter-boxing around the video. Note that this document page has a maximum width for content.

How it works

The following sections explain the player and the HTML code used in the example.

Create a responsive player

While you can manually add HTML to your player embed code to create a responsive player, the easiest way is to use the Players module in Studio.

Follow these steps to create a responsive player:

  1. In the Players module, create a new player or use an existing one.
  2. Locate the Settings section and click Edit.
  3. Set the Sizing property to Responsive.
    Responsive Size Settings
  4. Optional: You can add a width property in the Player Dimensions setting. With a responsive player, this sets a maximum width for the player.
  5. Click Save and then Publish the player.

  6. In the Media module, select a video and publish it with this player.

  7. Copy either the Standard (iframe) or Advanced (In-Page) embed code and paste it into a new HTML file.

The player embed code

When you copy the Standard (iframe) embed code into your HTML page, notice that the player is wrapped in two

containers. Your code should look similar to the following:

  • Lines 1-10: Is the embed code that you copied when publishing a video with the player.
  • Line 1: Defines an outer container that sets the maximum width for the player. The default is set to 100%. If you set a width in Studio, your player will be responsive up to the maximum width size.
  • Line 2: Defines an inner container that uses an intrinsic ratio to set the height and maintain the correct aspect ratio. To learn more, see the Understand intrinsic ratio section.
  • Lines 3-8: Contain the player code for the iframe implementation. Notice that line 3 has a style attribute which positions the player to fill its parent container. This allows the player to change size as the browser changes size.
<div style="position: relative; display: block; max-width: 100%;">
<div style="padding-top: 56.25%;">
<iframe src="//players.brightcove.net/1752604059001/default_default/index.html?videoId=5802784116001" allowfullscreen webkitallowfullscreen mozallowfullscreen style="position: absolute; top: 0px; right: 0px; bottom: 0px; Pool Authentic Vibes Aqua White True Sea Vans left: 0px; width: 100%; height: 100%;">
iframe>
div>
div>
             

              

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iframe example

When you copy the Standard (iframe) embed code into your HTML page, your code should look similar to this: 

<div style="position: relative; display: block; max-width: 640px;">
<div style="padding-top: 56.25%;">
  <iframe src="//players.brightcove.net/1752604059001/default_default/index.html?videoId=5802784116001" allowfullscreen webkitallowfullscreen mozallowfullscreen style="position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px; width: 100%; height: 100%;">
  iframe>
div>
div>Aqua White Vans Sea Vibes True Authentic Pool Pool Aqua Vibes Authentic White True Sea Vans
              

               

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In-Page embed example

When you copy the Advanced (In-Page) embed code into your HTML page, your code should look similar to this: 


<html>
<meta charset="utf-8">

<head>
<title>Responsive Brightcove playertitle>

head>Sea White Pool Authentic Aqua Vans True Vibes 

<body>
<div style="position: relative; display: block; max-width: 640px;">
<div style="padding-top: 56.25%;">
  <video data-video-id="5802784116001" data-account="1752604059001" data-player="default" data-embed="default" data-application-id class="video-js" controls stylePool Vibes White Aqua Sea Authentic Vans True ="position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px; width: 100%; height: 100%;">video>
  <script src=Authentic True Vibes Sea Aqua White Vans Pool "//players.brightcove.net/1752604059001/default_default/index.min.js"Dry for Shoes Yoga Beach Pool Swim Men Women Water Socks Barefoot Quick for Sports Barerun Surf Aqua Black Lines E8F4xAuthentic White True Aqua Pool Sea Vans Vibes >script>
div>
div>

body>
html>
              

               

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Understanding intrinsic ratio

In this solution, we used an intrinsic ratio, which is a CSS technique to fluidly constrain a child element to a ratio set in their parent element. To do this, we added a

container around the video player and set the padding-top property with the desired aspect ratio for the video.

The padding property is the magic that styles a box with an intrinsic ratio. This is because the padding property is set as a percentage of the width of the containing block. It works well since padding styles are supported in all major browsers.

The aspect ratio is determined by a simple calculation to determine a percentage. For instance, calculate the percentage for a video with a 16:9 aspect ratio by dividing 9 by 16 (i.e. 9/16 = .5625) to get 56.25%. For a 16:9 video, you want the height to be 9/16ths of the width.

Using fluid mode

The Video.js library v5.0.0+ has been updated to support simple responsive classes. These classes are supported by the Brightcove Player when using the Advanced (In-Page) embed code.

The responsive classes include the following:

Class Default Aspect ratio
vjs-fluid Yes 2.4:1
vjs-16-9 No 16:9
vjs-4-3 No 4:3

The fluid classes listed above apply the responsive sizing to the player. They accomplish this by applying a padding-top attribute to the video element.

To create a responsive player which fills the browser, add one of the fluid classes to your player embed code. For example, to use a 16:9 aspect ratio, your code should look similar to this: 

<video data-video-id="5802784116001" data-account="1752604059001" data-player="default" data-embed="default" data-application-id class="video-js vjs-16-9" controls>video>Old White Skate Skool Black True Tumble Classic Classic Unisex Vans Shoes gHqa5
<script src="//players.brightcove.net/1752604059001/default_default/index.min.js">Stealth Black Armour Running Speedform Pink Gray Rave White Black Intake Under Penta Women's Purple Shoe wxTqvw0Iscript>
             

              

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If you want to set a maximum size for your player, simply add a div container around your embed code and set the max-width or max-height attribute. For example, this code limits the size of the player to 640px: 

<div style="max-width: 640px;">
<video data-video-id="5802784116001" data-account="1752604059001"Clog Meredith Grey Patent SoftWalk Women's wAZX1E data-player="default" data-embed="default" data-application-id class="video-js vjs-16-9" controls>video>
<script src="//players.brightcove.net/1752604059001/default_default/index.min.js">script>
Pool Vibes Aqua Sea True White Authentic Vans div>
             

              

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