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Old 3rd September 2003, 21:55   #14  |  Link
ppera2
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Join Date: Oct 2001
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Quote:
Originally posted by Wilbert
Some issues:

@ppera2,

I don't understand this. Sampling happens when converting the analog signal to a discrete one. The number of samples is always the same (NTSC: 910, and PAL: 1135; from page 13 data sheet Bt878). After sampling, the clip is resized to the resolution which you used when capturing (with some cards, overscan is included).
In other words: if you capture in bigger resolutions, the capture will be more precise, but not due to oversampling. It is just because you are downsizing to a less smaller resolution.
Interesting... So, BT chip performs some resizing during capture.
In that case it's worth to capture in final resolution. In res. what is moduo of 1135-some pixels, if I understood it well.
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