[mythtv-users] Plextor USB PX-TV402U tuner setting

Alan E. Davis lngndvs at gmail.com
Tue Apr 11 15:07:44 UTC 2006


Thanks for the discussion.  My objective has been to remotely control
a digital camera attached to a microcope through a PC, while my class
is watching.  I would like to be able to snap a photo of what we are
watching.  The photos would be in full digital resolution.

Alan

On 4/11/06, Brian Wood <beww at beww.org> wrote:
>
> On Apr 11, 2006, at 7:33 AM, Alan E. Davis wrote:
>
> > On 4/11/06, Dale E. Martin <dale at the-martins.org> wrote:
> >>> Are you able to view in real time, while recording?  (THat's a
> >>> feature
> >>> I need for the Microscope classroom setup I'm putting together).
> >>
> >> I have two plextor tuners (on a decoupled front end/backend
> >> system) and
> >> yes, I can watch video from them while they record.
> >
> > I understand there is a delay of some seconds, that, in other words,
> > one is not watching in
> > real time
>
> More like a fraction of a second, at least in my case.
>
> Not wanting to get Einsteinian on you, but what is "real time"?
> Certainly watching CNN from a DirecTV receiver you are not seeing the
> anchor at the "same time" as they are in the studio, and even
> terrestrial cable systems have some lag time, as they normally
> incorporate satellite links.
>
> Then there is always that pesky speed-of-light thing.
>
> If you are watching a "real" event and watching it on a TV system of
> any sort at the "same time" there will always be a latency associated
> with the TV system, this is usually more obvious with audio than with
> video.
>
> But for all practical purposes it is "real time", as much as any TV
> system can be said to be, and DVR systems simply have a slightly
> longer latency than systems without their advanced capability.
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