I'll never forget touring the NAB convention around 1999 with a friend who
was livid about what he called the "FCC mandating vaporware." He said their
new digital HDTV system didn't allow switching local commercials and station
ids into network feeds without losing sync but the "experts" all swore this
problem would be solved by the time of the digital changeover. He had his
doubts and turned out to be absolutely right. This mess was all the
handiwork of the consumer electronics industry, Comcast and Microsoft. The
NAB and the American public lost in yet another case of the best government
money can buy.

Bob Olhsson 
615.562.4346 http://www.bobolhsson.com http://audiomastery.com

-----Original Message-----
From Tom Fine: 
This is a problem here, too, on the FLAGSHIP local stations of the major
networks! Channel 2 (WCBS) is the worst. Their "solution" is to have either
the picture or audio jump or freeze into semi-sync every few minutes on some
days. Other days, sync seems to be fine, so I think this is a transmission
problem and not a production problem. Our Fox station (channel 5), rarely
has sync problems with local programming but I do notice network shows,
especially sports, are out of sync from time to time.