手机美图秀秀如何开启视频中的原声？

[[{"txt": "\u76f8\u4fe1\u5f88\u591a\u670b\u53cb\u90fd\u6709\u5728\u4f7f\u7528\u624b\u673a\u7f8e\u56fe\u79c0\u79c0\uff0c\u90a3\u4e48\u5927\u5bb6\u5728\u4f7f\u7528\u7f8e\u56fe\u79c0\u79c0\u7684\u8fc7\u7a0b\u5f53\u4e2d\u5982\u4f55\u5f00\u542f\u89c6\u9891\u4e2d\u7684\u539f\u58f0\u5462\uff1f\u5173\u4e8e\u8fd9\u4e2a\u95ee\u9898\u5c0f\u7f16\u5c31\u548c\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\u6211\u7684\u7ecf\u9a8c\uff0c\u5e0c\u671b\u80fd\u591f\u5e2e\u52a9\u5230\u5927\u5bb6\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/b87bd38920c5260fd5416d3fd2de4507890189c9.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["\u5de5\u5177/\u539f\u6599"]}, {"txt": "\u624b\u673a\u7f8e\u56fe\u79c0\u79c0\u3002"}], [{"txt": ["\u65b9\u6cd5/\u6b65\u9aa4"]}, {"txt": "\u9996\u5148\u70b9\u51fb\u624b\u673a\u684c\u9762\u4e2d\u7684\u7f8e\u56fe\u79c0\u79c0\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/ccc83ec5260f883583fee96bce078801397086c9.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u7136\u540e\u70b9\u51fb\u7f16\u8f91\u89c6\u9891\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/2184380f8835dd8a06aaf5b203013870d44187c9.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u63a5\u7740\u70b9\u51fb\u4e00\u4e2a\u89c6\u9891\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/274e9635dd8a59de257338b4b370d5413b8c84c9.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u7136\u540e\u70b9\u51fb\u5f00\u59cb\u7f16\u8f91\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/8974c38a59de4507e97588c55e413a8ca70885c9.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u63a5\u7740\u70b9\u51fb\u539f\u58f0\u5f00\u542f\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/dccb47de450788015a0465f4b18ca608a40f82c9.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u6700\u540e\u70b9\u51fb\u5c4f\u5e55\u53f3\u4e0b\u65b9\u7684\u786e\u5b9a\u56fe\u6807\u5c31\u53ef\u4ee5\u4e86\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/589f5b0788013870b6358a392d08a50f95fc83c9.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}]]