所谓的可用率，通俗地理解就是AI生成的视频素材能够被实际采用的比例。过去，AI视频生成模型最主要的技术难点就是无法保持分镜的连续性、音画的匹配度，生成的素材也无法像实拍一样有大范围的运动镜头。所以如果只是生成15秒左右的短片，上一代AI视频生成模型完全能够胜任，但要是制作1分钟以上、包含完整剧情的短剧，这些景别单一又缺乏角色调度的视频素材就完全不够用了。
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