WebM Opus support not indicated & truncates audio file

Issue #15043862 • Assigned to Nishant N.


Ashley G.
Dec 10, 2017
This issue is public.
Found in
  • Microsoft Edge
Found in build #
Reported by 1 person

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Steps to reproduce

Repro URL: https://www.scirra.com/labs/audioCodecTests/
Note: “Web Media Extensions” are not installed.

The URL tests a range of audio formats with HTML5 audio, Web Audio, and MSE. Tested in Edge 16 (build 16299).

Steps to reproduce:

  1. Open the URL in Edge
  2. Play the WAV version of the sound effect, listen to how it sounds
  3. Scroll down to the “WebM Opus” section
  4. Observe “HTML5 audio support” line
  5. Try playing the WebM Opus sound with either HTML5 audio or Web Audio

Observed result:
a) HTML5 audio support says "no (empty string)", because canPlayType returned an empty string, indicating the format is not supported.
b) Playing the audio truncates the first section of the sound

Expected result:
a) canPlayType should return “maybe” or "probably", to indicate the format is supported
b) the format should decode properly, including the start of the sound, so it sounds similar to the WAV version (or WebM Opus playback in Chrome/Firefox).


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    Comments and activity

    • Microsoft Edge Team

      Changed Assigned To to “James M.”

      Changed Assigned To to “Venkat K.”

      Changed Assigned To from “Venkat K.” to “Nishant N.”

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