[mythtv-users] Mechanical cable splitter

Josh White jaw1959 at gmail.com
Fri Nov 16 16:06:25 UTC 2007

I've read that there is a way to set a PVR-250 to write to the screen
"instantly" by skipping the encoding on the card and using it like a basic
frame grabber.  I read this in the context of making it work for use as a
display for a video game console.  I don't remember the specifics, but I
believe it involved something to do with ivtv to make it work.  I know this
is vague, but I'm hoping it will jog someones more knowledgeable memory.
I'm also not sure what this would do to the performance of a myth system (or
if it could even work at all) but if it were done on a sufficiently powerful
system, perhaps it would be a way to reduce the lag involved.  Probably not
much chance of it working on a remote backend / local frontend setup, but on
a local backend/frontend system perhaps?

On Nov 16, 2007 10:58 AM, Brian Wood <beww at beww.org> wrote:

> lanas wrote:
> > Second, and this is odd,
> > the digital box cable menu overlay (i.e. channel listings, etc...)
> > responds very slowly to the digital box remote when seen through the
> > Myth box.  When a button is pressed for the menu, 4 seconds can be
> > easily counted before seeing a change on the digital bix menu.  Now, if
> > the TV input is changed so that the direct output from the digital box
> > is used, the menu response to the digital box remote are almost
> > instantaneous.
> >
> > Any idea of what cause could that be ?
> When you are watching the Myth box you are watching the picture after it
> has been encoded, recorded, retrieved from the disk system, decoded,
> then possibly scaled and finally displayed. All of this takes time, and
> while 4 seconds seems excessive you would certainly expect some
> additional delay for all of that to happen.
> Remember that watching Live TV is not the primary goal of Myth, and most
> users do not use it in that way at all.
> beww
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