Enumeration VideoServiceExtraSpecsQualityType

VideoServiceExtraSpecsQualityTypeは、通常の画質（低画質、中画質、高画質）の他に追加で利用できる画質の種類を表します。

VideoServiceExtraSpecsQualityType describes the type of video quality that can be used other than the regular video qualities (low-quality, medium-quality, high-quality).