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 1 person

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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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