Unfortunately, the digital lip sync issue is more complicated than it
would appear. In analog transmissions, the video and audio get processed
and transmitted at the same rates. With digital, video takes longer to
process than audio, and the delay is compensated for by most responsible
editors/engineers. But as soon as it hits the transmitter, a whole new
set of problems are introduced. Most broadcast transmissions are via
satellite and the number of hops that a signal takes is variable. Each
hop creates delays, usually with the video. And during transmission, the
delays themselves can be variable, depending upon how much "action" in
going on in each frame of video. More activity equals more delay
potential and less activity (freeze-frame), means less processing delay.
It is a vexing issue, one that stations have been trying to fix for
years but there is no "one-size-fits-all" solution, especially when you
have analog and digital equipment mixed inside a plant. I have worked at
a number of stations trying to solve this and the best they can right
now do it get it right most of the time. This doesn't excuse sloppy
editing or engineering practices which are certainly out there but most
stations realize that it is an extremely important issue.
Richard P.
I pretty much assumed that it was a function of my being on satellite
and assumed that folks using cable or "off the air" didn't have that
problem. Does anyone know why something like that should be happening?
TV never used to be that way in "the old days".
Mike
but with all the technology available and with all the technicians
and equipment on hand, why can't they get it right? At a minimum,
they should be able to get the sound and the picture in sync,
wouldn't ya think? Why do consumers want to spend so much money on
new digital televisions and then have to put up with out-of-sync
broadcasts, especially when it can be so easily noticed on a 52"
screen?
Steve
I thought it was just me! I'll sometimes be sitting with a room full
of people gazing at a big sreen and I'll be the only one squirming,
covering my eyes and wondering how this can be happening. Frequently
certain feeds are no better synched than youtube.
Drives me nuts.
Mar
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