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我正在从视频文件中提取时间码,需要将两者相加以获得总运行时间。所以我有一个 00:20:10:01 的视频和另一个 00:14:15:05 的视频,并且想要获得 00:34:25:06 的值,即两者的总和。假设时间码为 23.98,并且是一个字符串。会是什么计算?