| 摘要 |
A rate converter includes: picture configuration judgment elements for identifying a picture configuration containing at least a picture type for a plurality of pictures classified into one of the preset picture types contained in a unit data group of inputted video data; and rate conversion elements for selectively rate-converting the bit rate of the picture with a predetermined rate conversion ratio. Furthermore, the rate converter includes picture selection elements for selecting a picture to be rate-converted by the rate conversion elements among a plurality of pictures according to at least the picture type in the picture configuration identified by the picture configuration judgment elements.
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