NTSC using more CPU than ATSC

[sean_tambling]

Anyone looked at their Task Manager Graph while watching live TV and switched from a OTA SD channel to an OTA HD Channel and noticed that the CPU was being used more with the SD channel than the HD. Anyone have an explanation for this? I purchase the Kworld ATSC 110 back in December, and used the Beyond TV that came with it for about 2 weeks and thought I should upgrade and pay for the full retail version. I downloaded BTV4.5 and thought it was pretty good. But when I was recording shows I noticed that the show would hiccup very often. I started looking for answers in the forums. I saw that many were having the same problem as I so I looked long and hard for the BTV 4.4 version and just installed it. I had notice that with both the trial version 4.1.1 that not only was it hiccuping but when I viewed a SD show and then a HD show the SD show was using almost twice the processor as the HD show. I can't explain this. Has anyone else noticed this. Could I have something set up wrong. I would definitely think that HD would use more processor than SD. But what do I know. Let me know what you think!

[merrypig]

Isn't the SD a software compression ? The HD is already compressed so needs no cpu.

[mapleleaf]

I was thinking the same thing...
His analog tuner must be software based.
Get a good hardware based tuner for SD.

[tscales]

Yes, it is. Switch to an ATI TV Wonder 650 or a Hauppauge HVR-1600 and the problem goes away.