Scaling HLS video with CSS greatly affects inline video quality

Needs root cause Issue #8018559 • Assigned to Erik A.


Jun 28, 2016
This issue is public.
Found in
  • Microsoft Edge
Needs root cause
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Reported by 2 people

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Steps to reproduce

1 - Open sample page here:

2 - Begin playback of the CSS-Scaled Video Element

3 - Trigger a quality upswitch by entering fullscreen

4 - Wait for quality to change and exit fullscreen

5 - Observe video quality of inline player

Expected behavior:
The 1080p stream should look better than the 416 x 234 version

Actual behavior:
The 1080p stream appears to be at a significantly lower quality (See screenshots)


1 attachment

Comments and activity

  • Microsoft Edge Team

    Changed Assigned To to “Brad E.”

    Changed Assigned To to “Rick J.”

    Changed Assigned To to “Venkat K.”

    Changed Assigned To from “Venkat K.” to “Erik A.”

  • Changed Status to “Needs root cause”

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