媒体处理

初始化客户端

使用前请先初始化客户端，请参见初始化。

提交转码作业

调用SubmitTranscodeJobs接口，完成提交转码作业功能。

接口参数和返回字段请参见SubmitTranscodeJobs。调用示例如下：

import com.aliyuncs.vod.model.v20170321.SubmitTranscodeJobsRequest;
import com.aliyuncs.vod.model.v20170321.SubmitTranscodeJobsResponse;

/**
 * 提交媒体处理作业
 */
public static SubmitTranscodeJobsResponse submitTranscodeJobs(DefaultAcsClient client) throws Exception {
    SubmitTranscodeJobsRequest request = new SubmitTranscodeJobsRequest();
    //需要转码的视频ID
    request.setVideoId("34a6ca54f5c140eece85a289****");
    //转码模板ID
    request.setTemplateGroupId("e8aa925a9798c630d30cd****");
    //构建需要替换的水印参数(只有需要替换水印相关信息才需要构建)
    JSONObject overrideParams = buildOverrideParams();
    //覆盖参数，暂只支持水印部分参数替换(只有需要替换水印相关信息才需要传递)
    request.setOverrideParams(overrideParams.toJSONString());
    //构建标准加密配置参数(只有标准加密才需要构建)
    JSONObject encryptConfig = buildEncryptConfig(client);
    //HLS标准加密配置(只有标准加密才需要传递)
    request.setEncryptConfig(encryptConfig.toJSONString());
    return client.getAcsResponse(request);
}


/**
 * 以下为调用示例
 */
public static void main(String[] args) throws ClientException {
    DefaultAcsClient client = initVodClient("<Your AccessKeyId>", "<Your AccessKeySecret>");
    SubmitTranscodeJobsResponse response = new SubmitTranscodeJobsResponse();
    try {
        response = submitTranscodeJobs(client);
        //任务ID
        System.out.println("JobId = " + response.getTranscodeJobs().get(0).getJobId());
    } catch (Exception e) {
        System.out.println("ErrorMessage = " + e.getLocalizedMessage());
    }
    System.out.println("RequestId = " + response.getRequestId());
}

/**
 * 构建HLS标准加密的配置信息
 * @return
 * @throws ClientException
 */
public static JSONObject buildEncryptConfig(DefaultAcsClient client) throws ClientException {
    //点播给用户在KMS(密钥管理服务)中的Service Key，可在用户密钥管理服务对应的区域看到描述为vod的service key
    String serviceKey = "<您的Service Key>";
    //随机生成一个加密的密钥，返回的response包含明文密钥以及密文密钥
    //视频标准加密只需要传递密文密钥即可
    //注意：KMS Client建议单独初始化来保证正确的接入区域，可参考VOD初始化方式，传入正确的KMS服务区域。
    GenerateDataKeyResponse response = generateDataKey(client, serviceKey);
    JSONObject encryptConfig = new JSONObject();
    //解密接口地址，该参数需要将每次生成的密文密钥与接口URL拼接生成，表示每个视频的解密的密文密钥都不一样
    //至于Ciphertext这个解密接口参数的名称，用户可自行制定，这里只作为参考参数名称
    encryptConfig.put("DecryptKeyUri", "http://decrypt.demo.com/decrypt?" +
            "Ciphertext=" + response.getCiphertextBlob());
    //密钥服务的类型，目前只支持KMS
    encryptConfig.put("KeyServiceType", "KMS");
    //密文密钥
    encryptConfig.put("CipherText", response.getCiphertextBlob());
    return encryptConfig;
}

/**
 * 1、构建覆盖参数，目前只支持图片水印文件地址、文字水印的内容覆盖；
 * 2、需要替换的水印信息对应水印ID必须是关联在指定的模板ID(即TranscodeTemplateId)中；
 * 3、不支持通过媒体处理接口去增加一个没有关联上的水印
 * 注意：图片水印的文件存储源站需要和发起转码的视频存储源站一致
 * @return
 */
public static JSONObject buildOverrideParams() {
    JSONObject overrideParams = new JSONObject();
    JSONArray watermarks = new JSONArray();
    //图片水印文件地址替换
    JSONObject watermark1 = new JSONObject();
    //模板上面关联需要替换的水印文件图片水印ID
    watermark1.put("WatermarkId", "2ea587477c5a1bc8b57****");
    //需要替换成对应图片水印文件的OSS地址，水印文件存储源站需要和视频存储源站一致
    watermark1.put("FileUrl", "https:192.168.0.0/16);

    //文字水印内容替换
    JSONObject watermark2 = new JSONObject();
    //模板上面关联需要替换内容的文字水印ID
    watermark2.put("WatermarkId", "d297ba31ac5242d207****");
    //需要替换成对应的内容
    watermark2.put("Content", "用户ID：6****");
    watermarks.add(watermark2);
    overrideParams.put("Watermarks", watermarks);
    return overrideParams;
}

/**
 * 生成加密需要的密钥，response中包含密文密钥和明文密钥，用户只需要将密文密钥传递给点播即可
 * 注意：KeySpec 必须传递AES_128，且不能设置NumberOfBytes
 * @param client KMS-SDK客户端
 * @param serviceKey 点播提供生成密钥的service key，在用户的密钥管理服务中可看到描述为vod的加密key
 * @return
 * @throws ClientException
 */
public static GenerateDataKeyResponse generateDataKey(DefaultAcsClient client, String serviceKey) throws ClientException {
    GenerateDataKeyRequest request = new GenerateDataKeyRequest();
    request.setKeyId(serviceKey);
    request.setKeySpec("AES_128");
    return client.getAcsResponse(request);
}

提交截图作业

调用SubmitSnapshotJob接口，完成提交截图作业功能。

import com.aliyuncs.vod.model.v20170321.SubmitSnapshotJobRequest;
import com.aliyuncs.vod.model.v20170321.SubmitSnapshotJobResponse;

/**
 * 提交媒体截图处理作业调用函数
 */
public static SubmitSnapshotJobResponse submitSnapshotJob(DefaultAcsClient client) throws Exception {
    SubmitSnapshotJobRequest request = new SubmitSnapshotJobRequest();
    //需要截图的视频ID(推荐传递截图模板ID)
    request.setVideoId("4d237a8270084849bf4207876181****");
    //截图模板ID
    request.setSnapshotTemplateId("5d745e6b8baadf589e0702426cfc6****");

    //如果设置了SnapshotTemplateId，会忽略下面参数
    request.setCount(50L);
    request.setSpecifiedOffsetTime(0L);
    request.setInterval(1L);
    request.setWidth("200");
    request.setHeight("200");
    JSONObject spriteSnapshotConfig = buildSnapshotTemplateConfig();
    request.setSpriteSnapshotConfig(spriteSnapshotConfig.toJSONString());
    return client.getAcsResponse(request);
}

/**
 * 构建雪碧图截图配置
 * @return
 */
public static JSONObject buildSnapshotTemplateConfig() {
    JSONObject spriteSnapshotConfig = new JSONObject();
    spriteSnapshotConfig.put("CellWidth", "120");
    spriteSnapshotConfig.put("CellHeight", "68");
    spriteSnapshotConfig.put("Columns", "3");
    spriteSnapshotConfig.put("Lines", "10");
    spriteSnapshotConfig.put("Padding", "20");
    spriteSnapshotConfig.put("Margin", "50");
    //保留雪碧图原始图
    spriteSnapshotConfig.put("KeepCellPic", "keep");
    spriteSnapshotConfig.put("Color", "tomato");
    return spriteSnapshotConfig;
}

/**
 * 以下为调用示例
 */
public static void main(String[] args) throws ClientException {
    DefaultAcsClient client = initVodClient("<Your AccessKeyId>", "<Your AccessKeySecret>");
    SubmitSnapshotJobResponse response = new SubmitSnapshotJobResponse();
    try {
        response = submitSnapshotJob(client);
        //任务ID
        System.out.println("JobId = " + response.getSnapshotJob().getJobId());
    } catch (Exception e) {
        System.out.println("ErrorMessage = " + e.getLocalizedMessage());
    }
    System.out.println("RequestId = " + response.getRequestId());
}

查询截图数据

调用ListSnapshots接口，完成查询截图数据功能。

接口参数和返回字段请参见ListSnapshots。调用示例如下：

import com.aliyuncs.vod.model.v20170321.ListSnapshotsRequest;
import com.aliyuncs.vod.model.v20170321.ListSnapshotsResponse;


/**
 * 查询截图数据
 */
public static ListSnapshotsResponse listSnapshots(DefaultAcsClient client) throws Exception {
    ListSnapshotsRequest request = new ListSnapshotsRequest();
    //视频ID
    request.setVideoId("c86c0ceba9796535****");
    //截图类型
    request.setSnapshotType("CoverSnapshot");
    request.setPageNo("1");
    request.setPageSize("20");
    return client.getAcsResponse(request);
}


/**
 * 以下为调用示例
 */
public static void main(String[] args) throws ClientException {
    DefaultAcsClient client = initVodClient("<Your AccessKeyId>", "<Your AccessKeySecret>");
    ListSnapshotsResponse response = new ListSnapshotsResponse();
    try {
        response = listSnapshots(client);
        //截图地址
        System.out.println("Url = " + response.getMediaSnapshot().getSnapshots().get(0).getUrl());
    } catch (Exception e) {
        System.out.println("ErrorMessage = " + e.getLocalizedMessage());
    }
    System.out.println("RequestId = " + response.getRequestId());
}

导播台视频预处理

调用SubmitPreprocessJobs接口，完成导播台视频预处理功能。

接口参数和返回字段请参见SubmitPreprocessJobs。调用示例如下：

import com.aliyuncs.vod.model.v20170321.SubmitPreprocessJobsRequest;
import com.aliyuncs.vod.model.v20170321.SubmitPreprocessJobsResponse;

/**
 * 导播台视频预处理
 */
public static SubmitPreprocessJobsResponse submitPreprocessJobs(DefaultAcsClient client) throws Exception {
    SubmitPreprocessJobsRequest request = new SubmitPreprocessJobsRequest();
    //视频ID
    request.setVideoId("c86c0ceb8db54ae09796535****");
    request.setPreprocessType("PreprocessType");
    return client.getAcsResponse(request);
}


/**
 * 以下为调用示例
 */
public static void main(String[] args) throws ClientException {
    DefaultAcsClient client = initVodClient("<Your AccessKeyId>", "<Your AccessKeySecret>");
    SubmitPreprocessJobsResponse response = new SubmitPreprocessJobsResponse();
    try {
        response = submitPreprocessJobs(client);
        //任务ID
        System.out.println("JobId = " + response.getPreprocessJobs().get(0).getJobId());
    } catch (Exception e) {
        System.out.println("ErrorMessage = " + e.getLocalizedMessage());
    }
    System.out.println("RequestId = " + response.getRequestId());
}