| 摘要 |
An apparatus for encoding input video data representative of a number of group of pictures (GOPs) each having a plurality of fields or frames includes a first encoder (4) for processing received input video data (Vi) so as to determine difficulty data (Dk) of a field or frame which is indicative of the difficulty of the video data, a computing device (5) for determining a target code amount (Tj) representative of an amount of data to be utilized in accordance with the difficulty data (Dk) of a number N of the fields or frames, and a second encoder (7) for encoding the received video data in accordance with the target code amount (Tj). The computing device (5) determines the target code amount (Tj) such that the target code amount for an ith field or frame is determined in accordance with the difficulty data (Dk) of the N fields or frames from a jth field or frame, the target code amount for an ith+1 field or frame is determined in accordance with the difficulty data (Dk) of the N fields or frames from a jth+1 field or frame, the target code amount for an ith+2 field or frame is determined in accordance with the difficulty data (Dk) of the N fields or frames from a jth+2 image, and so forth. As a result, an acceptable allocation of bits may be provided for the encoding processing such that an image may be restored with relatively high quality. <IMAGE> |
