HTML Multimedia Chapter 3

Multimedia Definition

• Multimedia comes in various formats, including images, music, sound, videos, records, films, animations, and more.
• Web pages often contain multimedia elements of different types and formats.

HTML Video

• The controls attribute adds video controls, like play, pause, and volume.
• It is a good idea to always include width and height attributes to prevent page flickering while the video loads.
• The video element allows you to specify alternative video files, which the browser may choose from.
• The text between the video tags will only be displayed in browsers that do not support the video element.
• The autoplay attribute starts a video automatically.
• The loop attribute specifies that the video will start over again after it finishes.

Common Video Formats

• M4V (.m4v) is developed by Apple Inc. and is specifically designed for Apple products.
• MP4 (.mp4) is developed by Moving Picture Experts Group (MPEG) and can be played by most media players and devices.

HTML Audio

• The controls attribute adds audio controls, like play, pause, and volume.
• The audio element allows you to specify alternative audio files, which the browser may choose from.
• The text between the audio tags will only be displayed in browsers that do not support the audio element.

HTML Plug-ins

• Plug-ins can be added to web pages with the object tag or the embed tag.
• Examples of plug-ins include Adobe Flash Player, Adobe Reader, Windows Media Player, Apple Quicktime, and Java Applets.

HTML Object Tag

• The object element is supported by all browsers.
• The object element defines an embedded object within an HTML document.
• It is used to embed plug-ins in web pages.

HTML Embed Tag

• The embed element is supported in all major browsers.
• The embed element also defines an embedded object within an HTML document.
• Web browsers have supported the embed element for a long time, although it has not been part of the HTML specification before HTML5.

Multimedia Accessibility

• Multimedia accessibility ensures that website content is accessible to all, including people with disabilities who cannot hear or see audio.
• Transcript is required for most W3C media.
• Captions are nice to have for most W3C media and are required for some.
• Captions are essential when people need to see what's happening in the video and get the audio information in text at the same time.