准备工作

本文为您介绍如何通过智能媒体服务SDK,调用SubmitMediaProducingJob接口来完成音视频批量混剪。

前置概念

批量混剪

通过少量的音视频素材和一段口播的不同组合,合成出多段不一样的视频成片。

场景介绍

进入5G时代,越来越多的商家选择短视频平台做营销推广,将广告制作成短视频投放在多个KOL或营销号。但由于各大短视频平台有去重机制(防止视频盗用),内容相同的营销视频会被做屏蔽处理,这就要求投放在不同账号的视频,在内容、结构上要有差别,即需要完成音视频的批量混剪。您可以通过定制SubmitMediaProducingJob中的Timeline参数,来完成不同的混剪需求。

费用说明

在提交剪辑合成作业任务时,可能会产生多个计费项计费的情况。详情请参见智能生产制作

使用说明

前提条件

步骤一 创建OSS bucket

登录OSS控制台,单击Bucket 列表 > 创建 bucket地域选择华东2(上海),请记录Bucket名称,此处创建的Bucket会作为剪辑完成后的视频输出地址,后续代码中将会使用。

image

步骤二 运行批量混剪代码

  1. 环境要求:

    • 操作系统:Windows 8.1 及以上、macOS、Linux。

    • 下载并安装 IntelliJ IDEA 2020.1 及以上版本。

    • JDK 1.8及以上。

  2. 新建Maven工程以运行代码。

  3. 导入依赖的第三方包。

    说明

    以下示例代码中引入的服务端SDK版本号仅供参考,获取最新的版本请参见服务端SDK

    <dependencies>
      <dependency>
        <groupId>com.aliyun</groupId>
        <artifactId>ice20201109</artifactId>
        <version>2.3.0</version>
      </dependency>
      <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.9</version>
      </dependency>
    </dependencies>

    image.png

  4. AccessKey IDAccessKey Secret的值配置到配置文件,具体操作请参见管理访问凭据,更多鉴权方式请参见管理访问凭据

    说明

    访问凭据的更多管理方式请参见管理访问凭据

  5. 新建Java Class,贴入以下代码示例。

    展开查看示例代码

    import com.alibaba.fastjson.JSONArray;
    import com.alibaba.fastjson.JSONObject;
    import com.aliyun.ice20201109.Client;
    import com.aliyun.ice20201109.models.*;
    import com.aliyun.teaopenapi.models.Config;
    
    import java.util.*;
    
    // 成功视频
    // http://oushu-test-shanghai.oss-cn-shanghai.aliyuncs.com/ice_output/46b29eb5775f4f758846171ab79bfca7.mp4
    
    /**
     *  需要maven引入二方包依赖:
     *   <dependency>
     *      <groupId>com.aliyun</groupId>
     *      <artifactId>ice20201109</artifactId>
     *      <version>2.1.0</version>
     *  </dependency>
     *  <dependency>
     *      <groupId>com.alibaba</groupId>
     *      <artifactId>fastjson</artifactId>
     *      <version>1.2.9</version>
     *  </dependency>
     */
    public class BatchProduceAlignment {
    
        static final String regionId = "cn-shanghai";
        static final String bucket = "第三步创建的bucket";
        private Client iceClient;
        
        public static void main(String[] args) {
            try {
                BatchProduceAlignment batchProduce = new BatchProduceAlignment();
                batchProduce.initClient();
                batchProduce.run();
            } catch (Exception e) {
                System.out.println("Produce failed. Exception: " + e.toString());
            }
        }
    
        public void initClient() throws Exception {
    
            // 阿里云账号AccessKey拥有所有API的访问权限,建议您使用RAM用户进行API访问或日常运维。
            // 本示例以将AccessKey ID和 AccessKey Secret保存在环境变量为例说明。配置方法请参见:https://help.aliyun.com/zh/sdk/developer-reference/v2-manage-access-credentials?spm=a2c4g.11186623.0.0.423350fbOTFdOB#2a38e5c14b4em
            com.aliyun.credentials.Client credentialClient = new com.aliyun.credentials.Client();
            Config config = new Config();
            config.setCredential(credentialClient);
    
            // 如需硬编码AccessKey ID和AccessKey Secret,代码如下,但强烈建议不要把AccessKey ID和AccessKey Secret保存到工程代码里,否则可能导致AccessKey泄露,威胁您账号下所有资源的安全。
            // config.accessKeyId = <第二步创建的AccessKey ID>;
            // config.accessKeySecret = <第二步创建的AccessKey Secret>;
            config.endpoint = "ice." + regionId + ".aliyuncs.com";
            config.regionId = regionId;
            iceClient = new Client(config);
        }
    
        public void run() throws Exception {
            // 文字素材
            String text = "人们懂得用五味杂陈形容人生,因为懂得味道是每个人心中固守的情怀。在这个时代,每一个人都经历了太多的苦痛和喜悦,人们总会将苦涩藏在心里,而把幸福变成食物,呈现在四季的餐桌之上";
            // 视频素材
            String[] videoArray = new String[]{
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f1.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f2.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f3.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f4.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f5.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f6.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f7.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f8.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f9.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f10.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f11.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f12.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f13.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f14.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f15.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f16.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f17.mp4",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/food/f18.mp4"
            };
            // 背景音乐素材
            String[] bgMusicArray = new String[]{
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/music/m1.wav",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/music/m2.wav",
                    "https://ice-document-materials.oss-cn-shanghai.aliyuncs.com/test_media/music/m3.wav"
            };
            // 视频标题
            String title = "舌尖上的美食";
            // 生成的成片数
            int produceCount = 3;
    
            // 批量提交任务
            List<String> jobIds = new ArrayList<String>();
            for (int i = 0; i < produceCount; i++) {
                String jobId = produceSingleVideo(title, text, videoArray, bgMusicArray);
                jobIds.add(jobId);
            }
            // 轮询任务状态直到全部结束
            System.out.println("waiting job finished...");
            while (true) {
                Thread.sleep(3000);
                boolean allFinished = true;
                for (int i = 0; i < jobIds.size(); i++) {
                    String jobId = jobIds.get(i);
                    GetMediaProducingJobRequest req = new GetMediaProducingJobRequest();
                    req.setJobId(jobId);
                    GetMediaProducingJobResponse response = iceClient.getMediaProducingJob(req);
                    GetMediaProducingJobResponseBody.GetMediaProducingJobResponseBodyMediaProducingJob mediaProducingJob = response.getBody().getMediaProducingJob();
                    String status = mediaProducingJob.getStatus();
                    System.out.println("jobId: " + mediaProducingJob.getJobId() + ", status:" + status);
                    if ("Failed".equalsIgnoreCase(status)) {
                        System.out.println("jobfailed. jobInfo: " + JSONObject.toJSONString(mediaProducingJob));
                        throw new Exception("Produce failed. jobid: " + mediaProducingJob.getJobId());
                    }
                    if (!"Success".equalsIgnoreCase(status)) {
                        allFinished = false;
                        break;
                    }
                }
                if (allFinished) {
                    System.out.println("all job finished.");
                    break;
                }
            }
        }
    
        public String produceSingleVideo(String title, String text, String[] videoArray, String[] bgMusicArray) throws Exception {
            text = text.replace(",", "。");
            text = text.replace("\n", "。");
            String[] sentenceArray = text.split("。");
    
            JSONArray videoClipArray = new JSONArray();
            JSONArray audioClipArray = new JSONArray();
    
            List<String> videoList = Arrays.asList(videoArray);
            Collections.shuffle(videoList);
    
            for (int i = 0; i < sentenceArray.length; i++) {
                String sentence = sentenceArray[i];
                String clipId = "clip" + i;
                String videoUrl = videoList.get(i);
                String videoClip = "{\"MediaURL\":\""+videoUrl+"\",\"ReferenceClipId\":\""+clipId+"\",\"Effects\":[{\"Type\":\"Background\",\"SubType\":\"Blur\",\"Radius\":0.1}]}";
                videoClipArray.add(JSONObject.parseObject(videoClip));
                String audioClip = "{\"Type\":\"AI_TTS\",\"Content\":\"" + sentence + "\",\"Voice\":\"zhichu\",\"ClipId\":\""+clipId+"\",\"Effects\":[{\"Type\":\"AI_ASR\",\"Font\":\"Alibaba PuHuiTi\",\"Alignment\":\"TopCenter\",\"Y\":0.75,\"FontSize\":55,\"FontColor\":\"#ffffff\",\"AdaptMode\":\"AutoWrap\",\"TextWidth\":0.8,\"Outline\":2,\"OutlineColour\":\"#000000\"}]}";
                audioClipArray.add(JSONObject.parseObject(audioClip));
            }
    
            String subtitleTrack = "{\"SubtitleTrackClips\":[{\"Type\":\"Text\",\"Font\":\"HappyZcool-2016\",\"Content\":\""+title+"\",\"FontSize\":80,\"FontColor\":\"#ffffff\",\"Y\":0.15,\"Alignment\":\"TopCenter\",\"EffectColorStyle\":\"CS0004-000005\",\"FontFace\":{\"Bold\":true,\"Italic\":false,\"Underline\":false}}]}";
    
            int bgMusicIndex = (int)(Math.random() * bgMusicArray.length);
            String bgMusicUrl = bgMusicArray[bgMusicIndex];
            String timeline = "{\"VideoTracks\":[{\"VideoTrackClips\":"+videoClipArray.toJSONString()+"}],\"AudioTracks\":[{\"AudioTrackClips\":"+audioClipArray.toJSONString()+"},{\"AudioTrackClips\":[{\"MediaURL\":\""+bgMusicUrl+"\"}]}],\"SubtitleTracks\":[" + subtitleTrack + "]}";
    
            //
            String targetFileName = UUID.randomUUID().toString().replace("-", "");
            String outputMediaUrl = "http://" + bucket + ".oss-" + regionId + ".aliyuncs.com/ice_output/" + targetFileName + ".mp4";
            int width = 720;
            int height = 1280;
            String outputMediaConfig = "{\"MediaURL\":\"" + outputMediaUrl + "\",\"Width\":"+width+",\"Height\":"+height+"}";
    
            SubmitMediaProducingJobRequest request = new SubmitMediaProducingJobRequest();
            request.setTimeline(timeline);
            request.setOutputMediaConfig(outputMediaConfig);
            SubmitMediaProducingJobResponse response = iceClient.submitMediaProducingJob(request);
            System.out.println("start job. jobid: " + response.getBody().getJobId() + ", outputMediaUrl: " + outputMediaUrl);
            return response.getBody().getJobId();
        }
    
    }
    
  6. 请将代码中的bucket替换成第二步所创建的值。

  7. 单击运行,即可生成视频。代码的整体流程是:

    生成好时间线 -》提交视频合成任务 -》轮询任务状态 -》控制台打印相应日志。image.pngimage.png

  8. outputMediaUrl为输出地址,当任务状态为Success时,打开outputMediaUrl对应的文件,即可预览成片视频。因为新建的bucket是私有的,链接无法直接打开,可以到OSS控制台复制文件url,得到鉴权后的链接进行访问。

    image

  9. 代码中的produceCount为输出成片数,修改produceCount即可输出不同数量的视频。代码中的文案和素材视频,开发者可以修改成自己想要的内容进行合成,更多内容请查看Timeline配置说明文档。image.png

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