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Multimedia Widgets

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  1. MultimediaWidgets

  2. Multimedia audio video object

  3. Sound in HTML5 <audio controls> <source src="h.wav" type="audio/wav"> </audio> Options: controls autoplay

  4. Videos in HTML <video controls> <source src="m.mp4" type="video/mp4" /> </video> Need to define height and width Options: controls autoplay

  5. Videos on YouTube • Not downloaded • Steps • Share • Embed • Choose size • Copy and paste the text (iframe)

  6. YouTube Warnings • YouTube videos do not display when run from your local file. You will get a gray box that says file not found. It will work fine once uploaded. • YouTube HTML that you load does not validate. It uses an attribute frameborder=“0” that has been deprecated (is no longer supported). It is formatting that should be done in the CSS. In this case it means note to put on a border and if you delete it, it has the same impact. You can format the iframe element just as you would any other element

  7. Other Documents • Object <object data="cauliflower.pdf"></object> Size of object: scroll bars Linking a pdf: can open in a browser, but not part of your website

  8. Widgets

  9. Widgets • A chunk of code that you can embed in an existing environment • Differences • Resides: desktop or web • Embedding: any page or application or limited • Runs: your machine or server

  10. How Widgets are Built • Today, most use HTML and embed tag • Also will see iframe and script • In any case, rules are the same • Must validate • Clean up formatting • Often easier to work if formatted • Exception for iframe • Need to keep width and height • Just numbers (represent px)

  11. Using Widgets • Finding • General websites (may have old stuff) • Specific sites • Adding • Add • Format • Enclose in div • position and format • Warning: make sure that your browser isn’t blocking them

  12. Problems with Widgets • They have divs in them that you can’t see • Implicaton: if you format all divs, it applies to the ones in the widget • Solution: name all divs with class or use section or header, … • They may use & or blank in URLs • Implication: won’t validate • Solution: replace all &s with &amp; and all blanks with %20 • They may be old • Don’t use if too many obsolete tags

  13. Steps for adding a widget • Assure that you have no unnamed divs • Layout your page with a placeholder div that is the size of the widget that you are going to add • Add the widget inside the div • Assure that it looks the way that you want • Format the embedded code without any changes • Replace all inline formatting with classes and css • Assure that it still looks right • Eliminate any unneeded tags or css entries • Assure that it still looks right • Replace all & and blanks as needed • Validate

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