| 摘要 |
A resolution-converting apparatus includes an input interface, a parameter calculator, a first converter, a decoder, and a second converter. The input interface inputs a video content compression-encoded and having first resolution, together with a second resolution which has been designated and which is lower than the first resolution. The parameter calculator calculates value n (natural number) when 1/2n times the first resolution is higher than the second resolution. The first converter converts the video content of the first resolution in a frequency domain, to a video content having 1/2n times the first resolution, by using the value n calculated by the parameter calculator. The decoder decodes the video content converted by the first converter. The second converter converts, in a space domain, the resolution of the video content decoded, to a video content of the designated second resolution.
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