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Audio-ISSUE-56 (HTMLMediaElementSync): HTMLMediaElement synchronisation [Web Audio API]

From: Audio Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Tue, 15 May 2012 15:46:06 +0000
Message-Id: <E1SUJws-0002qb-5Z@tibor.w3.org>
To: public-audio@w3.org
Audio-ISSUE-56 (HTMLMediaElementSync): HTMLMediaElement synchronisation [Web Audio API]

http://www.w3.org/2011/audio/track/issues/56

Raised by: Philip J├Ągenstedt
On product: Web Audio API

It appears as though once audio data has left HTMLMediaElement (via MediaElementAudioSourceNode) there is no way to filter that audio and play it back in sync with other audio or video streams.

Since the timestamps are not propagated, it does not appear possible to add effects to a particular point in the media resource timeline. For example, audio descriptions (voice synthesis of extra text cues for the visually impaired) requires ducking the main audio and mixing in additional audio at a specific time.
Received on Tuesday, 15 May 2012 15:46:17 GMT

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