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二、打開抖音後，找到自己想要合拍的視頻，點擊頁面右下角的分享按鈕，如圖所示：
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三、然後在分享中就可以找到合拍選項了，點擊合拍，如圖所示：
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四、此時視頻會進行壹個緩存，然後提示正在合拍中，如圖所示：
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五、緩存好後，手機拍攝的頁面就變成了兩個，右邊的是紅人拍的視頻，左邊的是自己拍的視頻，如圖所示：
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