Bug 234840

Summary:	Audio canPlayType() reports false negative for PCM WAV
Product:	WebKit	Reporter:	Ashley Gullen <ashley>
Component:	Media	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED CONFIGURATION CHANGED
Severity:	Normal	CC:	acase, bfulgham, cdumez, jean-yves.avenard, jer.noble, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari 15
Hardware:	Unspecified
OS:	Unspecified

Description Ashley Gullen 2022-01-04 05:49:34 PST

(Forked from issue 229799)

Repro URL: https://downloads.scirra.com/labs/audioCodecTests/

In Safari 15.2, canPlayType() indicates PCM WAV ("audio/wav;codecs=1") is not supported by returning an empty string. However when passing a PCM WAV file to both an <audio> element and Web Audio, it correctly decodes and plays the file.

Observed result: canPlayType() returns empty string
Expected result: canPlayType() to return "maybe" or "probably"

Comment 1 Radar WebKit Bug Importer 2022-01-04 17:05:56 PST

<rdar://problem/87122702>

Comment 2 Austin Case 2022-05-25 11:27:28 PDT

Hey all, this is becoming a big challenge and causing us to have to recommend using any other browser. But Safari has the best video codec support with HEVC and PRORES -- commonly with wav/pcm audio... thus our application can't trust if it can play the files or not.

Comment 3 Brent Fulgham 2023-10-25 13:01:19 PDT

This should be fixed in Safari 17. I checked on a recent macOS Sonoma system and am able to play the PCM WAV example (and others on the site).

Comment 4 Brent Fulgham 2023-10-25 13:03:27 PDT

Note: The cause of this bug was outside of the WebKit source code, so I am marking this as 'Configuration Changed'.