1个20秒的一个视频录像剪辑之后复制出来画面怎么变大了呢？ 自己手机录制的视频太长，想截取一段保存，要怎么弄？
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视频画面（视频的分辨率）多大，在用视频编辑软件编辑时，就必须建同样分辨率的项目（或工程、序列等）。这是必须的！ 否则就会出现问题。
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