Superseded95% confidenceDecision RuleTime unknown
拍摄4K视频必须选择U3(UHS Speed Class 3)且视频速度等级V30以上，最低持续写入速度需≥30MB/s，否则会出现丢帧或录制中断
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Long-term
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This knowledge claim has been superseded by newer content
拍摄4K视频至少需要U3(UHS速度等级3，最低30MB/s持续写入)或V30标准，普通U1卡在4K录制时会因写入不足导致掉帧或中断Sources
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