| 摘要 |
The types of consecutive k pictures are checked. If there is at least one I picture, the last I picture is output. If there is no I picture, the first P picture is output. If there is neither I picture nor P picture, the last B picture is output. When checking the types of the next plurality of pictures, the types of the first P picture after the output picture and the following pictures included in the consecutive k pictures and the types of the next k pictures following the k consecutive pictures are checked. The same processing is performed thereafter.
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