[mythtv-users] Upscaling standalone DVD vs. MythTV

[Calvin Harrigan]

Boleslaw Ciesielski wrote:
> Michael T. Dean wrote:
>> Scaling is (for all practical purposes) free--no additional load on your 
>> system--if you have Xv support...  So, the only load on the system is 
>> the load involved in playing back MPEG-2 at up to 720x{480,576}@60fps 
>> which isn't much of a load on modern processors.
> 
> Yes, but this is only fairly primitive scaling. To compete with hardware 
> scalers in high-end DVD players, TVs or receivers one has to employ 
> fancy software scaling algorithms which are much more CPU intensive.
> 
> Bolek
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I'm pretty sure the scaling is done on the video card using an XV 
surface. It doesn't take any additional cpu outside of the cpu setting 
the desired output resolution and feeding the card the smaller video to 
be scaled up.

Calvin