在windows7系统下,把mp41改成mp4后缀名的步骤:
1、在文件夹界面下,点击工具栏中的“工具”选项
![](https://iknow-pic.cdn.bcebos.com/55e736d12f2eb9386c7c318cdb628535e5dd6fbf?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、在弹出的选项菜单中,选择“文件夹选项”
![](https://iknow-pic.cdn.bcebos.com/738b4710b912c8fcfef1bdb3f2039245d6882149?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、在弹出的“文件夹选项”设置窗口中,选择“查看”选项页
![](https://iknow-pic.cdn.bcebos.com/7acb0a46f21fbe09d223886a65600c338744ad4b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、在“高级设置”窗口中,找到“隐藏已知文件类型的扩展名”选项,点掉前面选择框中的对勾
![](https://iknow-pic.cdn.bcebos.com/ac4bd11373f08202398dda4145fbfbedab641bb4?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、点击确定后,在文件夹界面中既可以看到,视频文件的后缀名。
![](https://iknow-pic.cdn.bcebos.com/c995d143ad4bd11312c4fc4c54afa40f4bfb0546?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、在mp41后缀的文件上,单击鼠标右键,选择“重命名”
![](https://iknow-pic.cdn.bcebos.com/8c1001e93901213f495505a25ae736d12f2e956e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
7、在对文件重命名时,直接修改后缀名“mp41”中的“1”即可,其他的不要改动。
![](https://iknow-pic.cdn.bcebos.com/7af40ad162d9f2d3cd416f91a7ec8a136327cc78?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
8、敲击回车确定后,会弹出修改文件扩展名确认提示,点击“是”确定修改。
![](https://iknow-pic.cdn.bcebos.com/f9198618367adab4c8d5503d85d4b31c8701e443?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
9、完成将mp41改成mp4后缀名。
![](https://iknow-pic.cdn.bcebos.com/4ec2d5628535e5dd1b4eeea178c6a7efce1b626a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)