Filters
The original Dr. DivX featured VirtualDub filter compatibility. Avisynth script input compatibility was added in version 2.0.1 of the OSS version . Filter compatibility enables manipulation of the source before the codec begins compression. This may be to deliver a certain look, or more commonly to compensate for imperfections in the source files. For example, to smooth out low level MPEG-2 compression artifacts. While the DivX codec does have a pre-processing / noise reduction option, external filters generally provide more precise options, and when applied at appropriate settings, offer superior quality. However, this may be at the expense of encoding speed.
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Famous quotes containing the word filters:
“Raise a million filters and the rain will not be clean, until the longing for it be refined in deep confession. And still we hear, If only this nation had a soul, or, Let us change the way we trade, or, Let us be proud of our region.”
—Leonard Cohen (b. 1934)