?x-oss-process=video/snapshot,t_1000
//在1秒截帧
https://help.aliyun.com/document_detail/64555.html?spm=a2c4g.11186623.6.766.2e3331cdACSJxf
?x-oss-process=video/snapshot,t_1000
//在1秒截帧
https://help.aliyun.com/document_detail/64555.html?spm=a2c4g.11186623.6.766.2e3331cdACSJxf