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Re: syncing audio and video... who's the boss?
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Re: syncing audio and video... who's the boss?


  • Subject: Re: syncing audio and video... who's the boss?
  • From: Jeff Moore <email@hidden>
  • Date: Fri, 27 Apr 2007 11:38:09 -0700

THe answer to that question depends on what you are trying to do. For a video conferencing app, the answer is often that an external clock that is common between the participants in the conference is used to synchronize the media. For movie playback, it might be the audio, the video or an external clock depending on which media is more important to leave untouched or whether you need to synch to a video monitor or to some form of studio synch like black burst.

On Apr 27, 2007, at 10:50 AM, Chase wrote:

I have a video stream and an audio stream being handed to my cocoa app.

My app needs to marry to two streams and keep them in sync.

There has to be just **one** clock that everyone refers to in order to do this I'm assuming.

But which clock is the "master" clock... audio or video? ....or some other 3rd clock source?

--

Jeff Moore
Core Audio
Apple


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References: 
 >syncing audio and video... who's the boss? (From: "Chase" <email@hidden>)

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