Generating method and playing method of multimedia file, multimedia file generation apparatus and multimedia file playback apparatus

A multimedia file generation apparatus, comprising:

• a storage device, recording a plurality of modules;
• a processor, coupled to the storage device, and configured to execute the modules to:
• obtain a panorama video associated with a timeline, wherein the panorama video comprises at least one image object;
• obtain a plurality of object positions of the at least one image object corresponding to the timeline;
• manufacture the object positions into an object position file;
• and
• generate at least one data track of a multimedia file according to the object position file to produce the multimedia file including the panorama video and recording the object positions.

A playing method of multimedia file, applicable to a multimedia file playback apparatus, and comprising:

• receiving a multimedia file comprising a panorama video associated with a timeline;
• extracting a first data track of the multimedia file to obtain a plurality of first object positions of a first image object corresponding to the timeline;
• displaying an icon of the first image object in frames displayed by a screen when playing the panorama video;
• and
• in response to detecting a selection operation performed on the icon, determining a field of view (FOV) for playing the panorama video according to the first object positions recorded by the first data track and playing the frames including the first image object based on the determined FOV.

A multimedia file playback apparatus, comprising:

• a screen;
• a storage device, recording a plurality of modules;
• a processor, coupled to the screen and the storage device, and configured to execute the modules to:
• receive a multimedia file comprising a panorama video associated with a timeline;
• extract a first data track of the multimedia file to obtain a plurality of first object positions of a first image object corresponding to the timeline;
• display an icon of the first image object in frames displayed by the screen when playing the panorama video;
• and
• in response to detecting a selection operation performed on the icon, determine a field of view (FOV) for playing the panorama video according to the first object positions recorded by the first data track and play the frames including the first image object based on the determined FOV.