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Upscaling techy question?

apill

Standard Member
I was wondering what difference there is between DVD plugged in via scart or DVD upscaled and plugged in with HDMI?

Is the video footage on a DVD higher resolution than a standard def tv but lower than HD? i.e. I know DVD video is not as high res as HD, but is it higher than Standard Def TV or the same?

If it is the same resolution as TV what is the benefit of upscaling?

Thanks.
 

robo989

Banned
Its not a cut and dry as the wording of your post leads me to think you would belive. (sorry thats a mouthful).

SD screens, like plasmas, have a lower resolution PAL DVDs (in a sense).

A PAL dvd has a resolution of 720x576 maximum
An NTSC dvd has a resolution of 720x480 maximum

The thing is though, that the 576 in the PAL dvd for the number of vertical lines is interlaced, they are converted to progressive by either the dvd player\scaler or output device.

If you've only got an SD output device then an upscaling DVD player is not going to be giving you all it can for your money, pretty pointless.

If you've got a HD screen, then an upscaling dvd plauer can scale the picture to a much closer match to your screens resolution. So really its just (the intention anyway) a better scaler than the one in your output device.

But it is designed for the source that you are using, the one in the output device would just be a general purpose one, an upscaling dvd player will be specifically designed for things like scaling the picture in a video whilst eliminating noise\artifacts at the same time and not accentuating them, as possibly a built in plasma\lcd scaler might.

Different plasmas\lcds have different quality scalers so its impossible to say for certain that any upscaling dvd player will improve the picture on any plasma\lcd (I'm talking about HD screens here).

(There's also the de-interlacer on the dvd player to take into account, but this isn't strictly to do with the upscaling, and I'm tired)
 

apill

Standard Member
Cool. Thanks for the reply. Good explaination!

If you have a PAL CRT TV is its resolution 720x576?

Thanks.
 

apill

Standard Member
Can someone explain what difference resolutions and interlaced/progressive formats the following use in the UK?

1. Analog TV broadcast
2. Free view digital broadcast
3. What resolution a CRT TV generally is

Thanks.
 

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