[mythtv-users] WOT: Moving video around in a PC without using overlay

[Robert Longbottom]

On 03/03/2011 15:33, Jay Ashworth wrote:
> ----- Original Message -----
>> From: "Robert Longbottom"<rongblor at googlemail.com>
>
>> Just a thought but if you are going to scale down these input streams
>> anyway, why bother to capture them at 640x480?? Just capture them at a
>> lower resolution. Less bandwidth required and easier to scale. Even
>> better if you capture them at the size they are going to be on the
>> screen then no scaling needed at all.
>
> Because, as advertised, I don't know what I'm talking about.  :-)
>
> It's certainly sensible to capture them at whatever sub-640 resolution
> they'll actually be displayed at, wherever they're configured to land
> on the final output screen, but I didn't know that the 878 was finely
> variable; is it?
>
> Cheers,
> -- jra

I'm not sure it's finely variable, but it does the "standard" ones like 
640x480, 320x240, 160x120, etc.  It might do others inbetween, I'm not 
sure.  Just a case of working out if any would allow you to layout the 
feeds how you want to display them without too much wasted space 
inbetween.  I have a 4 channel "bttv" card and that does multiple 
capture resolutions.

Obviously capturing at 320x240 is 4x "easier" than 640x480 as it's a 
quarter of the pixels.  However you like to define "easier" :-)

Robert.