请点击这里购买继续学习！ 请点击这里购买继续学习！ [err01_错误代码-2147012796_描述在 Open 方法被调用之前不能调用此方法 -http://vod.cn-shanghai.aliyuncs.com?AccessKeyId=LTAI5tGgt2rwsmnbKW3udECw&Action=GetVideoPlayAuth&Format=xml&SignatureMethod=HMAC-SHA1&SignatureNonce=55505D3E16C34068AB8DB6406DCF6195&SignatureVersion=2.0&Version=2017-03-21&VideoId=e4612c3b8ebf4b66bd3c2ac65961fae3&timeStamp=2025-10-20T01%3A24%3A58Z&Signature=b5SE2VUpa47CSS%2BBCJJ0PSqyrFM%3D|]