# 创建转封装任务
您可以通过创建MpcClient实例并设置相关参数新建转封装任务，转封装任务用于视频转封装处理。
#### 前提条件
- 已购买对象存储服务，并参考[上传媒体文件](https://support.huaweicloud.com/usermanual-mpc/mpc010002.html)在媒体处理服务同区域（如华北-北京四）上传媒体处理的源视频。
- 已参考[获取云资源授权](https://support.huaweicloud.com/usermanual-mpc/mpc010003.html)，完成媒体处理服务授权。
 
#### 核心代码
1. **创建转封装任务** 。
   ```
   //设置转封装输入视频地址和输出路径
   ObsObjInfo input = new ObsObjInfo().withBucket("mpc-east-2").withLocation("region01").withObject("ok.flv");
   ObsObjInfo output = new ObsObjInfo().withBucket("mpc-east-2").withLocation("region01").withObject("output");
   //创建转封装请求
   CreateRemuxTaskRequest req = new CreateRemuxTaskRequest()
           .withBody(new CreateRemuxTaskReq().withInput(input).withOutput(output)
                   // 设置转封装参数
                   .withOutputParam(new RemuxOutputParam()
                           //设置转封装格式
                           .withFormat("HLS")
                           //转成hls切片间隔
                           .withSegmentDuration(5)));
   //发送转封装请求
   CreateRemuxTaskResponse rsp = initMpcClient().createRemuxTask(req);
   System.out.println(rsp.toString())
   ```
   
 
#### 完整代码
```
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ClientRequestException;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.http.HttpConfig;
import com.huaweicloud.sdk.mpc.v1.MpcClient;
import com.huaweicloud.sdk.mpc.v1.model.CreateRemuxTaskReq;
import com.huaweicloud.sdk.mpc.v1.model.CreateRemuxTaskRequest;
import com.huaweicloud.sdk.mpc.v1.model.CreateRemuxTaskResponse;
import com.huaweicloud.sdk.mpc.v1.model.ObsObjInfo;
import com.huaweicloud.sdk.mpc.v1.model.RemuxOutputParam;
import com.obs.services.internal.ServiceException;
public class TestRemux {
    /**
     * 初始化 MpcClient
     * @return
     */
    public static MpcClient initMpcClient() {
        HttpConfig httpConfig = HttpConfig.getDefaultHttpConfig().withIgnoreSSLVerification(true).withTimeout(3);
        //http代理设置，请根据实际情况设置
        //httpConfig.withProxyHost("xxxxxx").withProxyPort(xxxxxx).withProxyUsername("xxxxxx").
        //        withProxyPassword("xxxxxx");
        //根据实际填写ak,sk，在控制台账号名下“我的凭证 > 访问密钥”上创建和查看您的AK/SK
        
        String ak = System.getenv("SDK_AK");
        String sk = System.getenv("SDK_SK");
        //根据实际填写项目ID，在控制台账号名下“我的凭证 > API凭证”下查看您的项目ID
        String projectId = System.getenv("PROJECT_ID");
        //根据实际填写所需endpoint，这里以“region01”为例
        String endpoint = "https://mpc.region01.myhuaweicloud.com";
        BasicCredentials auth = new BasicCredentials().withAk(ak).withSk(sk).withProjectId(projectId);
        return MpcClient.newBuilder()
                .withHttpConfig(httpConfig)
                .withCredential(auth)
                .withEndpoint(endpoint)
                .build();
    }
    /**
     * 创建转封装任务
     * @param args
     */
    public static void main(String[] args) {
        //设置转封装输入视频地址和输出图片路径
        ObsObjInfo input = new ObsObjInfo().withBucket("mpc-east-2").withLocation("region01").withObject("ok.flv");
        ObsObjInfo output = new ObsObjInfo().withBucket("mpc-east-2").withLocation("region01").withObject("output");
        //创建转封装请求
        CreateRemuxTaskRequest req = new CreateRemuxTaskRequest()
                .withBody(new CreateRemuxTaskReq().withInput(input).withOutput(output)
                        // 设置转封装参数
                        .withOutputParam(new RemuxOutputParam()
                                //设置转封装格式
                                .withFormat("HLS")
                                //转成hls切片间隔
                                .withSegmentDuration(5)));
        //发送转封装请求
        try {
            CreateRemuxTaskResponse rsp = initMpcClient().createRemuxTask(req);
            System.out.println(rsp.toString());
        } catch (ClientRequestException | ConnectionException | RequestTimeoutException | ServiceException e) {
            System.out.println(e);
        }
    }
}
```