[theora-dev] A/V sync in Theora

Ralph Giles giles at xiph.org
Thu Jun 12 15:07:28 PDT 2003

On Thursday, June 12, 2003, at 08:29 pm, David Kuehling wrote:

>> I'm surprised you describe this as a problem with DVD though. I didn't
>> think players were smart enough to adjust playback to match an
>> external sync.
> What do you mean with "external sync"?

I meant in the sense that you're syncing frame playback to some 
external clock (the time stamps) rather than the implied one from the 

> The way I understand mplayer, mplayer continously calculates the A/V
> delay using either heuristics or any kind of timing information from 
> the
> stream.  It then slighly adjusts playback speed to keep the delay down.

What do you mean by A/V delay? :)


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