Abstract
Multimedia authoring tools is a tool for designing multimedia documents based on multimedia presentation scenarios designed by the user. Visual media (images, video, animation, text, etc.) and non-visual media (sound, music, etc.) are combined into a multimedia document. A multimedia programming language represents multimedia documents. The core process in multimedia authoring tools is called the kernel mechanism, which consists of two mandatory processes: modeling and verification. Verification carried out consists of time-computation and spatiotemporal verification. The time needed for the verification process on a multimedia authoring tool is highly dependent on the object or media. The relationship between processing time and the amount of media is exponential, so if a lot of media is processed, it will take a very long time. This is the main obstacle of a multimedia authoring tool at this time. The incrementality algorithm can be applied to the verification process in order to reduce processing time to verify multimedia documents. Based on the experimental results, the processing time can be reduced by up to 75%.