Bug 256445

Summary: Cannot manipulate audio through video tag with MediaSource API and AudioContext.createMediaElementSource
Product: WebKit Reporter: Ethan <ethanchong>
Component: Web AudioAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: cdumez, eric.carlson, jer.noble, karlcow, webkit-bug-importer
Priority: P2 Keywords: BrowserCompat, InRadar
Version: Safari 16   
Hardware: Unspecified   
OS: Unspecified   

Description Ethan 2023-05-07 22:26:45 PDT
We are unable to manipulate audio with a video element through AudioContext.createMediaElementSource. The source of the video element is a MediaSource ObjectURL and the video is a fragmented mp4.

We are not experiencing the issue on other browsers. See fiddle: https://jsfiddle.net/86arek9q/2/

Please advise. 

Thank you,
Ethan
Comment 1 Radar WebKit Bug Importer 2023-05-14 22:27:18 PDT
<rdar://problem/109337659>
Comment 2 Ethan 2023-07-10 19:12:11 PDT
See this updated fiddle https://jsfiddle.net/xusfyqgo/3/.

You can see the audio visualisation on Chrome but not on Safari.