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Quality as a multifaceted notion Quality is not a single metric. It encompasses resolution, frame rate, bitrate, codec efficiency, perceptual fidelity, synchronization, and user experience factors such as load time, compatibility, and battery impact. In constrained environments, improving perceived quality often requires prioritizing the attributes that matter most to users and the use case—sharp edges and readable text for instructional footage, fluid motion for action, or clean audio for speech.