A system for customizing soundtracks and hairstyles in modifiable videos is provided. In one example embodiment, the system includes a memory storing processor-executable codes and a processor configured to receive a modifiable video and a user image including a facial image and a hair image; analyze the facial image and the hair image to determine at least one hair property, determine whether the hair image is modifiable, and determine modifications to the at least one hair property; modify the at least one hair property to generate a modified hair image; generate a further image including the modified hair image and the facial image; and generate, based on the further image and the modifiable video, a personalized video that includes at least a part of the further image and at least a part of the modifiable video.