Information processing apparatus, information processing method and computer-readable recording medium having stored program therein

An information processing method executed by a computer, comprising:

• by using image data of an image to be subjected to temporal scalable coding, obtaining a motion vector for the image,
• based on the motion vector, determining whether an image group to be encoded is a still scene,
• when the image group is determined to be the still scene, adding an offset value to an intra-prediction encoding cost of the image included in the image group,
• based on an intra-prediction encoding cost to which the offset value is added, selecting an inter-prediction mode in which a predictive image of the image included in the image group is generated by inter-prediction, and
• by utilizing image data of the predictive image, performing an encoding process on the image data of the image included in the image group.

A non-transitory computer-readable recording medium storing therein a program for causing a computer to execute a process, the process comprising:

• by using image data of an image to be subjected to temporal scalable coding, obtaining a motion vector for the image,
• based on the motion vector, determining whether an image group to be encoded is a still scene,
• when the image group is determined to be the still scene, adding an offset value to an intra-prediction encoding cost of the image included in the image group,
• based on an intra-prediction encoding cost to which the offset value is added, selecting an inter-prediction mode in which a predictive image of the image included in the image group is generated by inter-prediction, and
• by utilizing image data of the predictive image, performing an encoding process on the image data of the image included in the image group.