1. Introduction
Short-from UGC video platforms, e.g., Kwai, and Tiktok have attained significant success and widespread popularity, attracting billions of users globally. In contrast to long-form UGC videos, short-form UGC (S-UGC) videos present several advantages, including mobile-friendly broadcasting, user-friendly engagement, kaleidoscope content creation, and snackable content, etc. [45]. However, S-UGC videos inevitably suffer from inconsistent and even poor subjective quality due to unprofessional creation, improper collection environments, or limited processing workflow. Building the quality assessment benchmarks tailed for S-UGC videos is crucial and urgent to advance the fast development of associated video processing techniques and quality control mechanisms for user-uploaded S-UGC videos.