在编辑状态下，用户把需要更换音频的视频文件插入到视频轨，使用鼠标右键点击视频轨中，用户插入的视频，点击右键菜单中分割音频，音频信号被分割到音频轨，然后选音频轨被分割出的音频，点右键删除音频，用户想要加入的音频插入音频轨，分享合成你需要的视频格式的文件即可。
添加声音工具：电脑、要添加的声音。
添加新声音步骤：
1、首先打开自己的视频编辑软件，把要编辑的视频导入，点击导入媒体，选择用户要导入点击打开即可
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2、接下来我们把导入的视频放到时间轴上，可以直接拖拽到时间轴，也可以把鼠标放到视频上右击选择添加到时间轴
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3、把视频放入到时间轴以后，选择视频，然后用鼠标放到视频上右击，点击“分离音频和视频”，就可以看到音频会单独出现在轨道里
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4、如若要删除音频，点击选择音频即可删除
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5、添加声音，选择导入媒体，在电脑上选择要导入的音频
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6、将音频导入至时间轴中，要放在跟视频不同的另一个轨道里
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扩展资料：
给视频加背景音乐步骤：
1、打开软件，然后如下图所示，点击“编辑”选择“导入媒体文件”，将本地电脑上的视频文件和音乐文件导入
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2、视频源文件一般都还带有声音的，点击“静音”即可
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3、再将此前导入的音乐文件，拖入至下方的音乐轨道上。
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4、还可以选择“淡出”效果，这样音乐播放到末尾后，声音会慢慢渐弱的
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5、编辑方面就算是搞定了。最后要导出文件了。选择“分享”菜单栏点击“创建视频文件”，按个人需要来选择格式，随后弹出一个窗口，选择输出路径→保存即可
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