An electronic device may include a touchscreen display, and a processor, wherein the processor may be configured to receive a first input to select a plurality of videos generated from at least two difference sources, perform video synchronization so that timelines of the plurality of selected videos coincide, extract segmental clips selected in each section from the respective videos, based on a main subject selected by analyzing the plurality of videos, adjust different segmental clips so that subjects included in the different segmental clips are synchronized based on a segmental clip in a first section, automatically generate a cross-edited video by joining segmental clips of respective sections in which the subjects are synchronized, and display the cross-edited video on the touchscreen display.