Electronic device and operation method thereof

An electronic device comprising:

• a display;
• and
• a processor connected with the display, the processor configured to:
• extract a plurality of frames from video data,
• identify, based on a face recognition function, first objects in each of the extracted frames,
• select a set of frames from the extracted frames based on at least one of sizes of the first objects identified in each of the extracted frames or a number of the objects identified in each of the extracted frames,
• determine a layout for displaying the extracted frames based on the set of frames, and
• display the extracted frames on the display according to the determined layout,
• wherein the processor is further configured to:
• if a number of the frames included in the set of frames is less than a reference frame number, identify, based on a recognition function, second objects in each of the extracted frames,
• select an additional set of frames from the extracted frames based on at least one of sizes of the second objects identified in each of the extracted frames or a number of the second objects identified in each of the extracted frames, and
• update the set of frames by adding the additional set of frames.