Image data recorder, image data recording method, and program

An image data recording method for an image data recorder that codes a still image in accordance with a moving image coding system, and records a still-image-converted moving image acquired by coding onto a recording medium, the image data recording method comprising:

• reading out an aspect ratio that was set for the recording medium when the recording medium was formatted;
• acquiring an aspect ratio of the still image recorded on the recording medium, and determining whether the acquired aspect ratio of the still image is the same as the aspect ratio set for the recording medium that has been read out;
• adding, based on the aspect ratio that was set for the recording medium that has been read out, an interpolation area on the top and bottom, or left and right of the still image in accordance with the result of the determination to generate an interpolation-area-added still image whose aspect ratio matches the aspect ratio set for the recording medium that has been read out, and coding the interpolation-area-added still image in accordance with a moving image coding system to generate the still-image-converted moving image;
• and
• recording the still-image-converted moving image onto the recording medium.

A computer-readable storage medium encoded with computer program instructions that when executed by a processor cause the processor to execute a method for coding a still image in accordance with a moving image coding system, and recording a still-image-converted moving image acquired by coding onto a recording medium, comprising:

• reading out an aspect ratio that was set for the recording medium when the recording medium was formatted;
• acquiring an aspect ratio of the still image recorded on the recording medium, and determining whether the acquired aspect ratio of the still image is the same as the aspect ratio set for the recording medium that has been read out;
• adding, based on the aspect ratio that was set for the recording medium that has been read out, an interpolation area on the top and bottom, or left and right of the still image in accordance with the result of the determination to generate an interpolation-area-added still image whose aspect ratio matches the aspect ratio set for the recording medium that has been read out, and coding the interpolation-area-added still image in accordance with a moving image coding system to generate the still-image-converted moving image;
• and
• recording the still-image-converted moving image onto the recording medium.

An image data recorder that codes a still image in accordance with a moving image coding system, and records a still-image-converted moving image acquired by coding onto a recording medium, the image data recorder comprising:

• a reading unit configured to read out an aspect ratio that was set for the recording medium when the recording medium was formatted;
• a determining unit configured to acquire an aspect ratio of the still image recorded on the recording medium, and determine whether the acquired aspect ratio of the still image is the same as the aspect ratio set for the recording medium that has been read out;
• a coding unit configured to, based on the aspect ratio set for the recording medium that has been read out, add an interpolation area on the top and bottom, or left and right of the still image in accordance with the result of determination performed by the determining unit to generate an interpolation-area-added still image whose aspect ratio matches the aspect ratio set for the recording medium that has been read out, and code the interpolation-area-added still image in accordance with a moving image coding system to generate the still-image-converted moving image;
• and
• a recording unit configured to record the still-image-converted moving image onto the recording medium.