创建工作流

function createWorkflow() {
  // sdk引入以及初始化请参考：https://cloud.tencent.com/document/product/436/11459
  const config = {
    // 需要替换成您自己的存储桶信息
    Bucket: 'examplebucket-1250000000', // 存储桶，必须字段
    Region: 'COS_REGION', // 存储桶所在地域，必须字段 如 ap-beijing
  };
  const key = 'workflow'; // 固定值
  const host = `${config.Bucket}.ci.${config.Region}.myqcloud.com`;
  const url = `https://${host}/${key}`;


  // 替换为自己的模板id
  const snapshotTemplate = 'xxx'; // 音视频截帧模板
  const transcodeTemplate = 'xxx'; // 视频转码模板
  const animationTemplate = 'xxx'; // 视频转动图模板
  const concatTemplate = 'xxx'; // 音视频拼接模板
  const voiceSeparateTemplate = 'xxx'; // 人声分离模板
  const videoMontageTemplate = 'xxx'; // 精彩集锦模板
  const watermarkTemplate = 'xxx'; // 视频水印模板
  const body = COS.util.json2xml({
    Request: {
      MediaWorkflow: {
        Name: 'my_workflow',
        State: 'Active', // 创建并开启工作流
        Topology: {
          Dependencies: {
            Start:
              'Snapshot_1581665960536,Transcode_1581665960537,Animation_1581665960538,Concat_1581665960539,VoiceSeparate_1581665960551,VideoMontage_1581665960551,SDRtoHDR_1581665960553,Segment_1581665960667',
            Snapshot_1581665960536: 'End',
            Transcode_1581665960537: 'End',
            Animation_1581665960538: 'End',
            Concat_1581665960539: 'End',
            VideoMontage_1581665960551: 'End',
            SDRtoHDR_1581665960553: 'End',
            Segment_1581665960667: 'End',
            VoiceSeparate_1581665960551: 'End',
          },
          Nodes: {
            Start: {
              Type: 'Start',
              Input: {
                ObjectPrefix: 'test-',
                NotifyConfig: {
                  Type: 'Url',
                  Url: 'http://www.callback.com',
                  Event: 'TaskFinish,WorkflowFinish',
                },
                ExtFilter: {
                  State: 'On',
                  Audio: 'true',
                  Custom: 'true',
                  CustomExts: 'mp4/mp3',
                  AllFile: 'false',
                },
              },
            },
            Snapshot_1581665960536: {
              Type: 'Snapshot',
              Operation: {
                TemplateId: snapshotTemplate,
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/snapshot-${number}.${Ext}',
                  SpriteObject: 'worlflow-test/${RunId}/snapshot-sprite-${number}.jpg',
                },
              },
            },
            Transcode_1581665960537: {
              Type: 'Transcode',
              Operation: {
                TemplateId: transcodeTemplate,
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/trans.mp4',
                },
              },
            },
            Animation_1581665960538: {
              Type: 'Animation',
              Operation: {
                TemplateId: animationTemplate,
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/bcd.gif',
                },
              },
            },
            Concat_1581665960539: {
              Type: 'Concat',
              Operation: {
                TemplateId: concatTemplate,
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/abc.${ext}',
                },
              },
            },
            VoiceSeparate_1581665960551: {
              Type: 'VoiceSeparate',
              Operation: {
                TemplateId: voiceSeparateTemplate,
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/background.mp3',
                  AuObject: 'worlflow-test/${RunId}/audio.mp3',
                },
              },
            },
            VideoMontage_1581665960551: {
              Type: 'VideoMontage',
              Operation: {
                TemplateId: videoMontageTemplate,
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/montage.mp4',
                },
              },
            },
            SDRtoHDR_1581665960553: {
              Type: 'SDRtoHDR',
              Operation: {
                SDRtoHDR: {
                  HdrMode: 'HLG',
                },
                TranscodeTemplateId: transcodeTemplate,
                WatermarkTemplateId: watermarkTemplate,
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/SDRtoHDR.mp4',
                },
              },
            },
            Segment_1581665960667: {
              Type: 'Segment',
              Operation: {
                Segment: {
                  Format: 'mp4',
                  Duration: '5',
                },
                Output: {
                  Region: config.Region,
                  Bucket: config.Bucket,
                  Object: 'worlflow-test/${RunId}/segment-trans${Number}',
                },
              },
            },
          },
        },
      },
    },
  });
  cos.request(
    {
      Method: 'POST', // 固定值，必须
      Key: key, // 必须
      Url: url, // 请求的url，必须
      Body: body, // 请求体参数，必须
      ContentType: 'application/xml', // 固定值，必须
    },
    function (err, data) {
      if (err) {
        // 处理请求失败
        console.log(err);
      } else {
        // 处理请求成功
        console.log(data.Response);
      }
    }
  );
}


function(err, data) { ... }