選擇壹個視頻到iMovie剪輯，選中視頻的時間軸，點擊下方的剪刀標誌開始剪輯，剪輯完成導出視頻即可。具體步驟如下：
1、選擇壹個視頻，點擊更多選項，在菜單中點擊用其他應用打開。
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2、在彈出的菜單中，點擊拷貝到iMovie剪輯，將視頻導入iMovie。
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3、系統會自動啟動iMovie，上方為視頻瀏覽窗口，下方為剪輯窗口。
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4、選中視頻的時間軸，點擊下方的剪刀標誌，拖動視頻的起點、結尾框，即可調整視頻開頭和結尾位置。
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5、點擊右下角的拆分、分離命令，可以將視頻剪斷，分別操作兩段視頻，選中視頻段可以進行刪除或復制。
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6、完成視頻剪輯後，點擊左上角的完成，在頁面下方點擊分享鍵。
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7、在分享菜單中，點擊儲存視頻，iMovie就會開始導出視頻。
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8、iMovie可以有三種視頻大小的選擇，根據需要，選擇導出視頻的清晰度即可。導出視頻會自動保存到手機相冊中。
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註意事項：
1、完成視頻片段處理後，點擊濾鏡選項可選擇視頻濾鏡效果讓視頻更加有質感。
2、剪輯視頻，片段與片段之間可以添加轉場效果，使視頻銜接更加自然。