Skip to end of metadata
Go to start of metadata

What can I do to improve the performance and quality of application sharing in Collaborate?

End-of-Life Warning

You will not be able to access Collaborate or Collaborate Ultra after June 30, 2018.

PASSHE's contract with Blackboard, Inc. for Collaborate and Collaborate Ultra ends on June 30, 2018. After June 30, 2018, you will not be able to access Collaborate rooms, Collaborate Ultra rooms, or any archived recordings you have in Collaborate or Collaborate Ultra.

These instructions assume you are using Collaborate and not Collaborate Ultra.

Not sure which Collaborate you are using? Check out our comparison page.

Turn off your webcam while using application sharing.

The video from your webcam and the video from application sharing both require large amounts of bandwidth. Using only one of them at a time will allow to Collaborate to allocate more bandwidth to that one activity, improving its video quality.

Do not application share videos.

Application sharing cannot keep up videos playing on your computer. Whether playing in a web browser, in a media player, or an application, videos will not play well through application sharing. Participants in your session will see a frozen, still image or, at best, a disjointed series of images, like a bad flip book animation.

Avoid flipping between applications.

Application sharing works best when Collaborate can send a series of small changes: a mouse cursor moving, spreadsheet cells updating, text changing as its edited. Each time everything changes at once, such as happens when you switch to a different app, it takes time for Collaborate get the entire change sent out to participants.

Check with participants after switching applications or making other large changes.

Each time you switch applications, or make some other major change to your screen, Collaborate will take at least a few seconds to catch session participants back up with what you're seeing on your screen now. Check with your participants that they're seeing what you see before you move on in your presentation.

When possible, load PowerPoint presentations to Collaborate's whiteboard instead.

Presentation slides shown in the whiteboard require less bandwidth than when shown through application sharing.
See: Loading a PowerPoint presentation into the Collaborate whiteboard

If you must show a PowerPoint presentation through application sharing, tune the presentation.

The same revisions that help PowerPoint presentations upload and display in Collaborate's whiteboard will benefit presentations given through application sharing. Properly prepared slides will display more quickly, with better quality, and using less bandwidth.
See: Designing PowerPoint presentations for use in Collaborate

When possible, share a specific application, not your desktop.

Application sharing a single application, particularly if you don't maximize that application to full screen, demands less bandwidth than sharing your entire desktop. The smaller you can keep your shared application window, while still providing an effective demonstration, the better Collaborate's application sharing will perform.

If you're comfortable with changing the resolution of your computer's screen, do so before the Collaborate session.

Reducing the resolution of your computer's screen, like limiting the size of your shared application windows above, will let Collaborate application share fewer pixels. That will increase the performance and quality of application sharing.

Help Desk

Help Desk Contact Info

Location: Boyer Building
Phone: 717-871-7777
Call Center

  • Fall/Spring Semesters:
    • M-Th 7:00am - 7:00pm EST
    • F 7:00am - 5:00pm EST
  • Summer Sessions:
    • M-F 7:00am - 5:00pm EST

Walk-in TAC

Technical Assistance Center - access via W. Frederick Street side of building

  • Fall/Spring Semesters:
    • M-Th 8:00 am - 7:00pm, F 8:00am - 5:00pm EST
  • Winter/Summer Sessions:
    • M-F 8:00am - 5:00pm EST
Search D2L Resources