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Posted by john on 08/11/06 15:45
In message <1155303402.481386.315400@m73g2000cwd.googlegroups.com>,
"blackburst@aol.com" <blackburst@aol.com> writes
>A few months back, I was complaining in this group about the occasional
>loss of video-to-audio synchronization in digital formats, such as DV.
>A few people out here said I was nuts.
>
>I opined that there must be a way to subcode a sync signal in both the
>video and audio, and that a unit could be designed to look for sync
>errors and correct them based on this.
>
>In the July Television Broadcast magazine, there are two squibs about
>such a system from Sigma, called Arbalest (pages 8 and 30).
>
>"The Arbalest system provides flawless recovery from lip-sync errors
>created by multiple video and audio transmission paths. It
>automatically detects and compensates for any dleay in a transmission
>up to +/- 5 seconds...The process is totally transparent to viewers,
>and uses a patent-pending system that accurately identifies the time
>relationship between video and audio signals."
>
>The articles note that both TNT and Court TV have ordered Arbalest
>systems.
The consumer DV types do not provide 'locked audio', this is not
normally an issue with non linear editing. One of the superior features
of DVCAM and DVCPro is locked audio. These type though such as the
PD170 and Z1 HDV types also give the option of locking audio in DV
mode.
--
John Lubran
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