Klarinet Archive - Posting 000279.txt from 2009/01

From: George Kidder <gkidder@-----.org>
Subj: Re: [kl] TV Audio-Video Synchronization
Date: Wed, 21 Jan 2009 14:52:31 -0500

I also noticed a synch problem between Maine PBN FM and MPBN (digital) TV -
several seconds at the time I switched from one to the other. Also
wondered how that could happen - looked as if it was being delayed so they
could <bleep> out profanity!

George

At 02:45 PM 1/21/2009, you wrote:
>I noticed some sync problems during the NBC coverage that I watched for most
>of the day. Is there a not-too-technical explanation for these audio-video
>sync problems? Is it more of a problem when telecasting from a remote
>location than from a studio? Does it originate in the onsite equipment at
>the remote location or does something in the way it's all processed
>introduce a lag in one component or the other?
>
>Seems I've been noticing more of these problems as more stations have gone
>digital. Or am I imagining it?
>
>Karl
>
>-----Original Message-----
>From: Benjamin Maas [mailto:benmaas@-----.com]
><snip>
>I would not use finger sync as a deciding factor. There were major sync
>issues with the broadcast on at least one network (ABC) that I was watching.
>At one point towards the beginning of the broadcast, there was close to a
>half of a second difference. Then, they would cut away to crowd shots and
>when they would return, the sync was close. However, this scene repeated
>itself no less than 6 times in the first 20 minutes or so. It became so
>distracting for me that I changed channels. When I switched to NBC, the
>feed was much better and stayed in sync.
>
>--Ben
>
>Benjamin Maas
>Fifth Circle Audio
>Long Beach, CA
>http://www.fifthcircle.com
>
>
>
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