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Bug 17347 - (HTMLMediaElementSync): HTMLMediaElement synchronisation
Summary: (HTMLMediaElementSync): HTMLMediaElement synchronisation
Status: CLOSED WONTFIX
Alias: None
Product: AudioWG
Classification: Unclassified
Component: Web Audio API (show other bugs)
Version: unspecified
Hardware: PC All
: P2 normal
Target Milestone: TBD
Assignee: This bug has no owner yet - up for the taking
QA Contact: This bug has no owner yet - up for the taking
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Depends on:
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Reported: 2012-06-05 11:39 UTC by Philip Jägenstedt
Modified: 2014-10-28 17:17 UTC (History)
1 user (show)

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Attachments

Description Philip Jägenstedt 2012-06-05 11:39:14 UTC 
Audio-ISSUE-56 (HTMLMediaElementSync): HTMLMediaElement synchronisation [Web Audio API]

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

Raised by: Philip Jägenstedt
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.
Comment 1 Olivier Thereaux 2014-10-28 17:14:09 UTC 
Web Audio API issues have been migrated to Github. 
See https://github.com/WebAudio/web-audio-api/issues
Comment 2 Olivier Thereaux 2014-10-28 17:17:02 UTC 
Closing. See https://github.com/WebAudio/web-audio-api/issues for up to date list of issues for the Web Audio API.