Styling Captions

In this topic you will learn ways to style captions.

The default look and feel of the captions is subject to change so you may wish to style the captions. When styling captions, be cautious to preserve adequate color contrast to meet WCAG accessibility guidelines and consider end viewers when making styling changes.

There are a few ways that captions can be styled:

Adding styling options to the WebVTT file

Style options can be applied directly to the WebVTT file that allow you to change the location and orientation of the captions as well as the text. Here are a few examples:

  • Bold text
    <b>Lorem ipsum</b>
  • Italic text
    <i>dolor sit amet</i>
  • Underlined text
    <u>consectetuer adipiscing</u>

Because the Brightcove Player manages the positioning of captions, you can not use styles to change the location or orientation of the captions. The inline styles don't provide many styling options. For a greater variety of styling options, you can use a CSS file as described in the next section.

For details about inline styles, see this link.

Adding styling options in the Video Properties section

Style options can be added in the Video Properties section. Here are the steps to style captions:

  1. Open the Media module.
  2. Click the link for the video you want to edit to open the video properties.
  3. Locate the preview player at the top of the page, play the video, and click on the player controls.
  4. Select the captions settings option.
  5. Clicking on the captions settings menu will display an overlay which allows the following caption properties to be set:

    • Text
    • Font Size
    • Background
    • Text Edge Style
    • Window
    • Font family
  6. Click Reset to return the captions to their default styling or Done to save the changes.

CSS Style Guide

This table shows which CSS properties are and are not supported for styling captions with the Brightcove Player:

CSS Property Supported Not Supported
font-family  
font-size  
font-weight  
color  
background  
background-color  
opacity  
visibility  
text-decoration  
text-shadow  
width  
height  
line-height  
white-space  
word-wrap  
top  
left  
display  
direction  

For more information on styling options for caption files, see the W3C WebVTT specification document or see Video Subtitling and WebVTT.

Limitations

Captions are supported on the following device types and operating systems.

  • iOS 10+
  • Android 7+
  • Internet Explorer 11+
  • The latest Edge, Chrome, Safari, and Firefox browsers on desktops