【Azure 媒体服务】使用媒体服务 v3 对视频进行上载、编码和流式传输时遇见的AAD错误

{
  "AadClientId": "00000000-0000-0000-0000-000000000000",
 "AadEndpoint": "https://login.chinacloudapi.cn",
  "AadSecret": "00000000-0000-0000-0000-000000000000",
  "AadTenantId": "00000000-0000-0000-0000-000000000000",
  "AccountName": "amsaccount",
  "ArmAadAudience": "https://management.core.chinacloudapi.cn/",
  "ArmEndpoint": "https://management.chinacloudapi.cn/",
  "Region": "chinaeast",
  "ResourceGroup": "amsResourceGroup",
  "SubscriptionId": "00000000-0000-0000-0000-000000000000"
}
 

/// <summary>
        /// Create the ServiceClientCredentials object based on the credentials
        /// supplied in local configuration file.
        /// </summary>
        /// <param name="config">The parm is of type ConfigWrapper. This class reads values from local configuration file.</param>
        /// <returns></returns>
        // <GetCredentialsAsync>
        private static async Task<ServiceClientCredentials> GetCredentialsAsync(ConfigWrapper config)
        {
            // Use ApplicationTokenProvider.LoginSilentWithCertificateAsync or UserTokenProvider.LoginSilentAsync to get a token using service principal with certificate
            //// ClientAssertionCertificate
            //// ApplicationTokenProvider.LoginSilentWithCertificateAsync
            // Use ApplicationTokenProvider.LoginSilentAsync to get a token using a service principal with symetric key
            ClientCredential clientCredential = new ClientCredential(config.AadClientId, config.AadSecret);
            return await ApplicationTokenProvider.LoginSilentAsync(config.AadTenantId, clientCredential, ActiveDirectoryServiceSettings.AzureChina);
        }