微信录制小视频最多只有10s，这是微信官方规定的，是没有办法延长时间。
如果想要拍摄更长时间的视频，可以按一下步骤操作：
1.找到相机并且点击打开
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2.切换成录像模式，点击红色按钮即可开始录像，没有时间限制
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3.打开微信，选择需要分享的好友
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4.点击右下角的"+"符号
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5.点击弹出菜单里面的相册
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6.选择你所录制的视频发送即可
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这种方式是不用考虑发送视频时间长短的。
拓展资料：
微信
微信（WeChat）是腾讯公司于2011年1月21日推出的一个为智能终端提供即时通讯服务的免费应用程序，由张小龙所带领的腾讯广州研发中心产品团队打造。
微信支持跨通信运营商、跨操作系统平台通过网络快速发送免费（需消耗少量网络流量）语音短信、视频、图片和文字，同时，也可以使用通过共享流媒体内容的资料和基于位置的社交插件“摇一摇”、“漂流瓶”、“朋友圈”、”公众平台“、”语音记事本“等服务插件。
参考资料
/mw.mbd.baidu.com/w9tut9w?f=cp"target="_blank"title="百度百科-微信">百度百科-微信