is this an automated device, or one that must be adjusted by a human?
i watched an event on tv last night that was off sync by close to a full second.
At 06:51 PM 9/4/2008, you wrote:
Yes, and it can be had for less than $8,000. Peanuts in the broadcast
budget. See product notes below signature.
This is adjusted by a human so it is subject to human error. Adjusting
it is as simple as turning a knob. Predictive correction equipment is
also made but only works reliably on talking heads.
Richard P.
is this an automated device, or one that must be adjusted by a human?
i watched an event
On Sep 3, 2008, at 9:18 PM, Tony B wrote:
It's not just you. It's a big problem today. I complain about it all
the time, as do broadcast engineers. Not at all sure why all the new
video formats separate audio from video.
Experience with this has proven to me that the problem is much
worse
On Sep 3, 2008, at 10:45 PM, Tom Piwowar wrote:
Could be just your TV that is out.
I have fixed this by turning the TV off on.
Nope. Not at all in my case. In fact, one can experience time
shifts in the amount of delay between audio and video as a program
progresses. It may be more
Nope. Not at all in my case. In fact, one can experience time
shifts in the amount of delay between audio and video as a program
progresses. It may be more or less out of sync at varying points
in the program.
That is true, but that does not address my question. Changing channels or
In the broadcast world, audio/video sync can vary depending upon how
much digital video action is taking place. The more movement in the
video (action scenes), the longer it takes to process, compared to the
audio stream. The sync difference is measurable in a piece as short as
one minute long.
It's not surprising that quality control issues are showing up now, and
that all the bugs haven't been worked out yet. But the conversion to
digital wasn't really in the interest of consumers.
Switching to digital frees up the very valuable frequencies that analog
TV now uses.
Compared to the
On Sep 4, 2008, at 9:16 AM, Tom Piwowar wrote:
That is true, but that does not address my question. Changing
channels or
restarting the set can often bring things back into sync. Remember
that
the least expensive box in the chain is the one you own.
Your suggested solutions have never
On Sep 4, 2008, at 10:04 AM, Richard P. wrote:
The problem can be caused/corrected by equipment, source material,
editors, and uplink/downlink operators. A transmission can have more
than a dozen hops in it, with each hop introducing its own set of
errors. However, there is no guaranteed
One of the ways the audio and the video can get out of sync is because the
video is fed directly to the screen while the audio is routed through a home
theater receiver (or the equivalent), for example. Better HTR's may have
audio delay circuitry the user can invoke to try re-sync the two. I have
I would bet that viewership will drop off after the transition due to
the fact that many houses that are able to receive usable VHF analog
transmissions right now will no longer be able to receive a reliable
UHF digital signal.
Richard P.
The problem can be caused/corrected by equipment,
We believe you! But be aware that reports are surfacing in the wild
that with different TVs, everything else being the same, one will show
bad audio sync and one won't.
Presumably this is the result of a bad component (or firm/software),
and not an inherent design flaw with that entire model
On Sep 4, 2008, at 2:48 PM, Tony B wrote:
Anyway, as someone else already pointed out I think, you need to power
cycle everything in your chain, not just the TV. Even if it likely
won't do any good.
Perhaps so, but such maneuvers should not be required in our
enlightened times and with
On Sep 4, 2008, at 2:26 PM, Richard P. wrote:
I would bet that viewership will drop off after the transition due to
the fact that many houses that are able to receive usable VHF analog
transmissions right now will no longer be able to receive a reliable
UHF digital signal.
As for my
FYI, there's a simple piece of commercial equipment in use today to
adjust for lip sync errors. All it requires is someone to input the
signal into it, adjust it, and then monitor the output. Master control
at the final broadcast point could do this if directed to. That would
take care the simple
On Sep 4, 2008, at 5:12 PM, Richard P. wrote:
FYI, there's a simple piece of commercial equipment in use today to
adjust for lip sync errors. All it requires is someone to input the
signal into it, adjust it, and then monitor the output. Master control
at the final broadcast point could do this
Yes, and it can be had for less than $8,000. Peanuts in the broadcast
budget. See product notes below signature. Most stations already have
this but use it for other things.
Richard P.
Leitch Technology has introduced the X75 HD, a versatile up-, down-
and cross converter and HD frame
Switching to digital frees up the very valuable frequencies that analog
TV now uses.
They needed the money to finance foreign wars. I wonder if there will be
any money leftover.
*
** List info, subscription management,
Is it just me, or are just about all digital TV broadcasts
exhibiting poor sync between their audio and their video? Parallel
analog broadcasts do not exhibit this problem for the most part. We
are all being forced to switch to digital reception which includes
spending money. Do we
It's not just you. It's a big problem today. I complain about it all
the time, as do broadcast engineers. Not at all sure why all the new
video formats separate audio from video.
On Wed, Sep 3, 2008 at 8:58 PM, Steve Rigby [EMAIL PROTECTED] wrote:
Is it just me, or are just about all digital TV
From what I've seen, it exists just about everywhere, due to the fact
that no matter what the broadcast medium, somewhere along the way it
has gone through some sort of digital processing. This evening's
network news broadcast's had major lip synch problem in several of
their packages and live
Is it just me, or are just about all digital TV broadcasts
exhibiting poor sync between their audio and their video?
Could be just your TV that is out.
I have fixed this by turning the TV off on.
*
** List info,
22 matches
Mail list logo
