ISSUE-56: (Bugzilla 17347) HTMLMediaElement synchronisation

HTMLMediaElementSync

(Bugzilla 17347) HTMLMediaElement synchronisation

State:

CLOSED

Product:

Web Audio API

Raised by:

Philip Jägenstedt

Opened on:

2012-05-15

Description:

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.

Related Actions Items:

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Related emails:

1. [web-audio-api] (HTMLMediaElementSync): HTMLMediaElement synchronisation (#78) (from notifications@github.com on 2013-09-11)
2. Re: Next teleconference : 6th June (from Olivier.Thereaux@bbc.co.uk on 2012-06-04)
3. Re: Next teleconference : 6th June (from mage@opera.com on 2012-06-04)
4. Re: [Agenda] W3C Audio WG Teleconference, 30th May 2012 (from olivier.thereaux@bbc.co.uk on 2012-05-30)
5. Re: Summary of issues (from crogers@google.com on 2012-05-22)
6. Summary of issues (from mage@opera.com on 2012-05-22)
7. Re: Web Audio API spec review (from crogers@google.com on 2012-05-16)
8. Re: Web Audio API spec review (from philipj@opera.com on 2012-05-16)
9. Audio-ISSUE-56 (HTMLMediaElementSync): HTMLMediaElement synchronisation [Web Audio API] (from sysbot+tracker@w3.org on 2012-05-15)

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