Shared Screen Appears Completely Black

Video SDK Web
1

Description

We have two normal users (User A and User B) and one BOT user participating in a Zoom meeting session.

When User A shares their screen:

  • User B can see the shared screen.
  • The BOT user cannot see the shared screen.

We’re trying to determine why the BOT user cannot view the shared screen.
Could this issue be related to client-side logic, or is it potentially a problem with the Zoom Web Video SDK?

Session ID: DMEUqp5QR/6MmAm4lF7ojw==

Any insights would be greatly appreciated. Thank you!

Which Web Video SDK version?
2.1.0

Video SDK Code Snippets

    let canvasElement = document.getElementById('zoom_share_canvas_remote_view');
    this.hideShareView();
    canvasElement.style.display = 'block';
    await stream.startShareView(canvasElement, userId);

Device (please complete the following information):

  • OS: Linux (Headless browser)
  • Browser: Chrome
  • Browser Version: 135
2

Hi @leo_tristan

Thanks for your feedback.

DMEUqp5QR/6MmAm4lF7ojw==

After analyzing the logs, we didn’t find any obvious issues with screen sharing. Could you share a recording with us for further investigation?

Thanks
Vic

3

Hi @vic.yang
Sorry for the late reply. We’ve received permission to share the recording with you.

This is the recorded video, though we’re not certain it will help troubleshoot the issue.

https://drive.google.com/file/d/1g9kh9wHfjCKCMmtL3uvNjH2zN3cdBzbN/view?usp=sharing

Issue context:
The expected behavior was for the shared video to display prominently on the main screen.

Steps leading to the issue:

  • Two users joined the meeting.
  • User 1 shared a YouTube video, but due to network lag or CPU too high, the video didn’t play.
  • User 1 then switched to sharing a different browser tab.

Note:
This issue only occurred once. We’ve attempted to reproduce it multiple times but haven’t been able to.

It might be difficult to investigate, but we appreciate your support in advance!