Introducing Kaltura ASR Captions

Kaltura Media has the ability to automatically add captions to your video content using automatic speech recognition (ASR). When a video is uploaded, the ASR processes begins immediately. Captions are created based on the audio track and the content is assumed to be in English.

Why are captions important?
Accurate captioning of audio and video content ensures that people who are Deaf and hard of hearing can understand the content. Additionally, captions are very useful to non-native English speakers, viewers watching in a sound-sensitive environment such as a library, can help viewers with learning disabilities or attention deficits maintain concentration. and can help all learners improve comprehension.

The following video effectively explains the importance of captioning.

 

How are captions created?
All videos created after August 6, 2018 will be auto-captioned. This means that once you create your video or upload your video to Kaltura, ASR captions will be automatically ordered and applied to your video. The process may take several minutes to several hours, depending on the length of your video.

What about older videos?
You can request ASR captions for any videos created before August 6, 2018. Detailed instructions may be found here: Add Captions to Previously Uploaded Video Content.

How accurate are ASR captions?
ASR captions are only 80% accurate and accuracy may vary depending on the audio quality, clarity of speech, background noise, etc.

While 80% accuracy may seem pretty decent, please keep in mind that this means that, in general:

  • 1 in 5 words will be incorrect
  • An 8-word sentence will be about 17% accurate
  • A 10-word sentence will be about 11% accurate

How do I improve the accuracy of my captions?
While ASR captions are a step forward for accessibility, we recommend editing them for accuracy. You can edit your captions right in your web browser – no additional software is needed! For more information and detailed instructions, see Review and Edit Captions.

 

Make Your myLesley Content More Accessible

Faculty often ask if Blackboard is accessible. While most web-based tools can always be more accessible and easier to use, the basic answer is “Yes, Blackboard is accessible.” The real problem often comes when we upload files and documents to Blackboard that may not be as accessible as they should be. We may not even be aware that the files we uploaded aren’t accessible to students with impairments. Blackboard Ally wants to fix that.

When an instructor uploads a file to myLesley (Blackboard), using the exact same process they currently use, Ally compares the file to a Web Content Accessibility Guidelines Checklist. It then does three things.

For students, Ally automatically converts that file into alternative, accessible formats. Alternative formats include Tagged PDF, HTML, ePub, electronic braille and audio. If the instructor uploads a scanned chapter or article, Ally will convert it to an OCR PDF which can be read as text by a screen reader.
Ally alternative formats

This a proactive and automatic process that happens without the instructor or Disability Services doing anything. Students do not need to self-identify or request alternative versions. The downside is that the quality of these alternative versions can vary. The more complex the original document, the more difficult it is to create a converted document that is useful and easy to navigate by the students who need them.

Therefore Ally also provides guidance to faculty on how to improve the accessibility of the documents uploaded to Blackboard. Each uploaded document receives an accessibility score and red, orange or green icon. Clicking on the icon presents you with information on what accessibility issues are in the document, information on why it is an issue, and links to tutorials on how to make changes to the document.

Ally has let you, the instructor, know that your documents may not be accessible and how to improve their accessibility without the need to attend a training or to have Disability Services reach out to you. You can slowly educate yourself on accessibility and improve not just the documents that are currently in your course, but also all future documents you will create. Over time, you will simply create accessible documents from the beginning because now you know how and how easy it can be.

Lastly, Ally provides an Institutional Report telling the university which courses have inaccessible content and what kinds of content are problematic. This means that the university can target its outreach and training based on our specific issues. One program may have a lot of courses with images and no alternative descriptions. Another’s biggest issue may be that Word documents require headings and subheadings. Instead of offering generic training and support for everyone, we can now reach out to each program and offer training and assistance for the issues they actually are having. The report also allows us to demonstrate our improvement over time.
Ally institutional report main issues

Ally will be available to all myLesley courses beginning this Fall. Keep an eye out for those accessibility scores on your documents. Ally is also making continuous improvements so don’t be surprised when new features and guidance become available.

If you have questions about Ally or need assistance, email elis@lesley.edu.