Method for transmitting data on stereoscopic image, method for playing back stereoscopic image, and method for creating file of stereoscopic image

A method of playing back a stereoscopic image, comprising:

• receiving data generated in a file format including a media information unit having a stereoscopic still image and image composition information and control information;
• composing a stereoscopic image from the stereoscopic still image according to the image composition information;
• and
• playing back the stereoscopic image according to the control information.

A method of generating a file of stereoscopic image data, comprising:

• generating a media information unit including a stereoscopic still image;
• generating a header information unit including control information for controlling the stereoscopic still image and image composition information for indicating a type of composing a stereoscopic image using the stereoscopic still image;
• and
• generating a file format including the media information unit and the header information unit.