[FredThompson]

Consider the source. DVDRHelp has a number of less-than-logical guides. If you're truly interested in knowing what is possible over analog signals, there are far better sources for information.

With ANY digital sampling, you will have far better results if you sample at a far greater frequency than the analog signal. Best is 4x or higher, 2x is still fine. To illustrate, an audio CD has 16 bits of resolution but truly professional ones are mastered at 96 and downmixed as the final operation. (OK, well, there IS a form of post-processing which can add apparent punch but that's a little different.)

If you capture at the highest rational size and depth, do your processing, then downmix for the final product, the results will be superior to those where the sample is made at the final product resolution.