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Ok, what effect does upsampling rates have on the presence of the chroma bug? Let's take the Toshiba 3750 as an example. Here are some of the video processing specs on this player:

* Super ColorStream Pro Progressive Scan Component Video

Progressive scan DVD pictures contain 480 horizontal lines of resolution

without displaying any interlaced scan lines and are the best images to

send to today's HD-capable televisions. Super ColorStream Pro models

also offer the highest oversampling (8:8:8) of the Y, Pr, Pb color

signal and deliver the highest resolution during interlaced playback.

* 10-bit 27MHz Video D/A Conversion with High Resolution Filter.

This 10-bit system reduces artifacts, providing an improvement over

conventional systems by a power of four. This new DAC employs a 27MHz

clock speed, and built-in 4:4:4 filtering to provide unsurpassed color

purity, color detail, and resolution.

Here are some quotes from the Video Performance section of the DVD Player benchmark report:

"Recently, a couple of DVD player manufacturers have begun advertising that their players are capable of upsampling the chroma channels. The fact is that 4:2:0 must be converted to 4:4:4 before it can be displayed. Interpolation is used to generate the new color difference samples. How those samples are generated can vary from processor to processor, and some algorithms are better than others. The DVDO Pure Progressiveâ„¢ engine uses an excellent technique to perform the "upsampling.""

"Because the DACs are running at twice the sample rate, more interpolation is done and additional samples are created resulting in 8:8:8 Y'Cb'Cr' with 1440 active samples per line. Remember that this is not real information but interpolated information."

So, does this mean a 4:4:4 filter and 8:8:8 oversampling can help mask or remove the chroma bug? I'm a little confused on all this... :)

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