Knowledgebase:

FAQ

questions we get asked about Opus Pro and Opus Creator

Some of the shortcuts and top tips to get the most from Opus Pro and Opus Creator.

If you have any suggestions please email support@digitalworkshop.com with the subject "KB FAQ"

HTML5 Questions

To make sure your content stands out and yet is easy to develop, Opus includes extra functionality even in the features you'll use everyday. Here are quick introductions to some of them.

My HTML5 Output Publication Just Displays a Blank (Black) Screen

Quiz Sound Effects

Something in your publication has broken the HTM so that nothing displays. The colour will match the background colour of your publication set via Publication Properties for which the default is black.

Solution

Your HTML5 publication may not work at all if it includes:

  1. an action which no longer has an object attached - for example, you deleted an object which you had a Show action attached to but didn't delete the action.
  2. an object name which includes a non-alphanumeric character such as a colon or angled brackets
  3. a script or javascript action with an error in it
  4. an HTML object which contains invalid HTML
  5. you have put invalid HTML into the header section of the Publish Settings

Also check the process for Solving Problems with Publications and if none of thse help please contact support.

Contacting Support


Why Doesn't Android Display My Video

Importing Metafiles

Quiz Sound Effects

The Import Vector option on the Draw menu lets you import EMF files exported from Corel Draw, Adobe Illustrator and Inkscape to provide high quality images which you can then edit just like Opus vectors.


How Can I Preview my HTML5 Video in the Opus Editor

Quiz Sound Effects

HTML5 uses a particular format of video (MP4) which versions of Windows before v8 cannot preview. Which measn you can't see the video in the Opus editor or even when using the Preview, you need to publish the file to HTML5 before you can preview it. Some programs include their own MP4 players for Windows v7 and some make these available for other Windows programs including Opus (we use Corel VideoStudio for example) in which case you will be able to preview.

Solution

Take a screenshot of a key frame in your video and add it to your publication as an Image object. Use the Make Same Size and Align Centres functions on the Arrange menu to make it the same size and position as your video object. Set it to be Initially Hidden and it will be visible in your editor but not the final publication - then delete it when you no longer need it.


So How Can I Position Hotspots on My HTML5 Video

Quiz Sound Effects

Even if you can preview your MP4 video in the Opus Editor (see above) Opus does not decode and import your video so cannot display a particular frame.

Solution

Take a screenshot of a key frame in your video (we use Paint Shop Pro) and add it to your publication as an Image object. Use the Make Same Size and Align Centre functions on the Arrange menu to make it the same size and position as your video object. Set it to be Initially Hidden and it will be visible in your editor but not the final publication - then delete it when you no longer need it.