Method and device for generating special effect program file package, method and device for generating special effect, and electronic device

A method for generating a special effect, comprising:

• obtaining parameter values of playback parameters of at least one group of sub-materials in a special effect program file package, wherein the at least one group of sub-materials comprises a plurality of sub-materials;
• performing key-point detection on a video image;
• and
• generating a special effect based on the at least one group of sub-materials on the video image according to detected key points and the parameter values of the playback parameters of the at least one group of sub-materials,
• the method further comprises:
• importing the special effect program file package,
• wherein importing the special effect program file package comprises:
• reading the special effect program file package to a memory by invoking a first interface function for reading a sticker material;
• and parsing the special effect program file package to obtain the at least one group of sub-materials and a special effect program file, wherein the special effect program file comprises the parameter values of the playback parameters of the at least one group of sub-materials.

An electronic device, comprising:

• a memory storing processor-executable instructions;
• and a processor arranged to execute the stored processor-executable instructions to perform operations of:
• importing a group of sub-materials, wherein the group of sub-materials comprises a plurality of sub-materials, obtaining parameter values of playback parameters of the group of sub-materials, and generating a special effect program file package according to the group of sub-materials and the parameter values of the playback parameters;
• or, obtaining parameter values of playback parameters of at least one group of sub-materials in the special effect program file package, wherein the at least one group of sub-materials comprises a plurality of sub-materials, performing key-point detection on a video image, and generating a special effect based on the at least one group of sub-materials on the video image according to detected key points and the parameter values of the playback parameters of the at least one group of sub-materials, wherein the playback parameters of the group of sub-materials comprise the following:
• a display parameter, used for representing whether the plurality of sub-materials are displayed;
• an interval parameter, used for representing a number of frames spaced between two adjacent sub-materials in the plurality of sub-materials for display;
• a trigger action parameter, used for representing a trigger action for triggering display of the plurality of sub-materials;
• a loop parameter, used for representing a number of times of loop playback of the plurality of sub-materials;
• a trigger delay parameter, used for representing an amount of time for which a display of the plurality of sub-materials is delayed;
• a trigger stop parameter, used for representing an action for stopping the display of the plurality of sub-materials;
• a display scale parameter, used for representing a reference basis for a change in a display size of the plurality of sub-materials;
• a position type parameter, used for representing a type of a relationship between each of the plurality of sub-materials and a respective position;
• a position relation parameter, used for representing whether the plurality of sub-materials move with a preset reference part;
• a position parameter, used for representing a position binding relationship between each of the plurality of sub-materials and a respective preset key point;
• a rotation parameter, used for representing a key point around which the plurality of sub-materials rotate;
• and a beautifying/make-up effect parameter, used for representing a beautifying/make-up effect displayed at a preset part when the sub-materials are displayed.