[opendtv] Lip sync problem resurfaces
- From: Eory Frank-p22212 <Frank.Eory@xxxxxxxxxxxx>
- To: "'opendtv@xxxxxxxxxxxxx'" <opendtv@xxxxxxxxxxxxx>
- Date: Mon, 19 Apr 2004 14:46:25 -0700
There is no excuse for this. The system that decodes and processes the audio &
video has all the tools it needs to maintain A/V sync. If that system is
embedded in the display and there is an A/V sync issue, I call that a major
design flaw. If that system is in an external STB, and the display does not
provide a mechanism for bypassing its internal "value-added" video processing,
I call that a major marketing flaw.
-- Frank
Synching Lucy's lips with TV sound
By Junko Yoshida , EE Times
April 19, 2004 (2:08 PM EDT)
URL: http://www.eet.com/article/showArticle.jhtml?articleId=3D18901792
<http://www.eet.com/article/showArticle.jhtml?articleId=3D18901792>
PARIS - In movie theaters of yesteryear, it was not uncommon for
the audio and picture to be out of synch, with the silver-screened
actors' mouths moving and sound coming a half-second or more later.
It was amusing until it became annoying, and patrons invariably
yelled out to the projectionist, who restarted the film.
Technology eventually solved that problem, but in a bizarre piece
of irony, the technology has gotten so sophisticated that the
problem has resurfaced.
TV makers have only recently begun to recognize the problem of
audio information being asynchronous with lip movement on
flat-panel TVs, realizing that it could become a bigger issue as
sales of flat-panel displays start to take off on the consumer
market.
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