A multimedia apparatus, comprising: a touch screen; and a control unit configured to: play back a video content; control the touch screen to display the video content along with a progress bar and a control item to control playback of the video content, the progress bar having a position indicator which is configured to progress along the progress bar while the video content is being played back according to a user input received via the control item, and indicate a playback position of the video content, which is a position of a currently displayed video content; change a playback position of the video content in response to a user touching the position indicator and moving the position indicator along the progress bar; replace the progress bar with an enlarged progress bar in response to a user touch maintained for at least a predetermined time at a location of the touch screen where the position indicator of the progress bar is displayed; and change the playback position of the video content in response to a user moving the position indicator along the enlarged progress bar, wherein a playback duration of the video content corresponding to a defined display length of the enlarged progress bar is shorter than a playback duration of the video content corresponding to the defined display length of the progress bar such that a user can precisely control the video content through the enlarged progress bar. a touch screen; and a control unit configured to: play back a video content; control the touch screen to display the video content along with a progress bar and a control item to control playback of the video content, the progress bar having a position indicator which is configured to progress along the progress bar while the video content is being played back according to a user input received via the control item, and indicate a playback position of the video content, which is a position of a currently displayed video content; change a playback position of the video content in response to a user touching the position indicator and moving the position indicator along the progress bar; replace the progress bar with an enlarged progress bar in response to a user touch maintained for at least a predetermined time at a location of the touch screen where the position indicator of the progress bar is displayed; and change the playback position of the video content in response to a user moving the position indicator along the enlarged progress bar, wherein a playback duration of the video content corresponding to a defined display length of the enlarged progress bar is shorter than a playback duration of the video content corresponding to the defined display length of the progress bar such that a user can precisely control the video content through the enlarged progress bar. play back a video content; control the touch screen to display the video content along with a progress bar and a control item to control playback of the video content, the progress bar having a position indicator which is configured to progress along the progress bar while the video content is being played back according to a user input received via the control item, and indicate a playback position of the video content, which is a position of a currently displayed video content; change a playback position of the video content in response to a user touching the position indicator and moving the position indicator along the progress bar; replace the progress bar with an enlarged progress bar in response to a user touch maintained for at least a predetermined time at a location of the touch screen where the position indicator of the progress bar is displayed; and change the playback position of the video content in response to a user moving the position indicator along the enlarged progress bar, wherein a playback duration of the video content corresponding to a defined display length of the enlarged progress bar is shorter than a playback duration of the video content corresponding to the defined display length of the progress bar such that a user can precisely control the video content through the enlarged progress bar.