[mythtv-users] Question 1: Where can i control the up-scaling?

[Mark Kendall]

On 4 March 2010 17:08,  <qeldroma at gmx.net> wrote:
> Hello list,
>
> i want to control how video in Video and TV is scaled up to my Resolution?
> Xorg is at FullHD and my tv, too.
>
> So i want to configure the scaler that is used for upscaling smaller content?
>
> Kind regards, Florian

Florian,

Assuming  the default upscaling algorithm is something like bilinear
interpolation*, you can only specify a higher quality upscaler when
using OpenGl or VDPAU for video playback.

If you are using Linux, Windows or Mac and OpenGl for video then add
'openglbicubic' to the custom filter section of the display profile.
If you are using Linux and VDPAU for video and have a card with the
correct feature support then add 'vdpauhqscaling' to the custom
filters.

Both options have a performance penalty.

regards

Mark

* - certain cards/drivers etc may actually use a higher quality algo
but I've not come across anything that was explicitly or obviously
anythinh other than bi-linear.