Pr怎么导出mp4格式视频

[[{"txt": "\u6700\u8fd1\u6709\u5f88\u591a\u670b\u53cb\u5411\u6211\u54a8\u8be2\u5173\u4e8ePr\u600e\u4e48\u5bfc\u51famp4\u683c\u5f0f\u89c6\u9891\u7684\u95ee\u9898\uff0c\u4eca\u5929\u5c31\u4e3a\u5927\u5bb6\u4ecb\u7ecdPr\u600e\u4e48\u5bfc\u51famp4\u683c\u5f0f\u89c6\u9891\uff0c\u5e0c\u671b\u80fd\u591f\u5e2e\u52a9\u5230\u5927\u5bb6\u3002"}], [{"txt": ["\u65b9\u6cd5/\u6b65\u9aa4"]}, {"txt": "\u6253\u5f00Pr\u8f6f\u4ef6\uff0c\u5bfc\u5165\u9700\u8981\u7f16\u8f91\u7684\u7d20\u6750\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/c3c22dbf3bef354f93900c8d23db574afb321bbc.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u6309i\u952e\u8bbe\u7acb\u5165\u70b9\uff0c\u6309o\u952e\u8bbe\u7acb\u51fa\u70b9\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/340e4eb8b43ea8db91624281189c2cf7deb216bc.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u70b9\u51fb\u201c\u6587\u4ef6\u201d\uff0c\u70b9\u51fb\u201c\u5bfc\u51fa\u201d\u9009\u9879\uff0c\u9009\u62e9\u201c\u5a92\u4f53\u201d\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/a99a494afa32939ce5df67015719ce2c5a1b15bc.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u6839\u636e\u9700\u8981\u9009\u62e9\u201c\u5bfc\u51fa\u97f3\u9891\u201d\uff0c\u683c\u5f0f\u9009\u62e9\u201cH.264\u201d\uff0c\u4fee\u6539\u540d\u79f0\u548c\u4fdd\u5b58\u4f4d\u7f6e\uff0c\u70b9\u51fb\u201c\u5bfc\u51fa\u201d\u5373\u53ef\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/2db6c1b2dc19ce2c9633a66d7fdca039121f11bc.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}]]