Embodiments of the present invention effectively control utilizing a spoiler, the windage vibration of a magnetic head caused by the airflow generated in accordance with rotation of a magnetic disk, while reducing the dust flowing in on the downstream side of the spoiler. At least one embodiment includes a logic configured to receive video data having a format chosen from at least two formats and logic configured to receive an instruction from an instruction set including an indication of the format of the video data. The polyethylene terephthalate film has on its remaining side an adhesive layer that is protected by release paper.