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

Brian Wood beww at beww.org
Tue Apr 11 13:58:11 UTC 2006

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  

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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