Progressive-scan DVD players

摘要

The DVD format is based on MPEG-2 encoding, which means discs can contain eithet progressive or interlaced video. But since DVD players were designed from the start specifically for interlaced output, DVDs almost always come with interlaced frames. So what most players do is use a standard MPEG-2 decoder to generate digital interlaced video, then feed that video to a de-interlacing chip.