Video call providing device, method, system, and non-transitory computer readable medium storing a computer program

A video call providing method using a video call providing device capable of performing a video call with an external communication device, the video call providing method comprising:

• receiving, using at least one processor of a video call providing device, a first effect signal during a video call between the video call providing device and an external communication device, the first effect signal including information regarding a first effect corresponding to the video call, the first effect input via a first user input;
• receiving, using the at least one processor, a second effect signal, the second effect signal including information regarding a second effect corresponding to the video call, the second effect input via a second user input;
• verifying, using the at least one processor, an effect type of the first effect, and an effect type of the second effect, the verifying including,
• determining whether the first user input was input by a first user of the video call providing device or a second user of the external communication device, and
• determining whether the second user input was input by the first user or the second user;
• determining, using the at least one processor, whether an additional effect associated with the first effect and the second effect is to be automatically displayed based on results of the verifying;
• and
• displaying, using the at least one processor, the first effect and the additional effect on a display device based on results of the determining whether the additional effect is to be displayed.