将Azure Media Services缩略图任务预设与Java SDK一起使用

Windows Azure文档提供了一个任务预设，用于在C＃中创建缩略图和示例代码： https ： //msdn.microsoft.com/en-us/library/azure/hh973624.aspx

我试图使用java SDK http://azure.microsoft.com/en-us/develop/java/并从服务器获取错误400。

我的代码的相关摘录是：

JobInfo jobInfo = mediaService .create(Job .create() .setName( "Encoding " + assetToEncode.getName() + " to " + encodingPreset + " and Packaging to HLS") .addInputMediaAsset(assetToEncode.getId()) // Thumbnails see // https://msdn.microsoft.com/en-us/library/azure/hh973624.aspx .addTaskCreator( Task.create( mediaProcessor.getId(), "" + "" + "" + "").setConfiguration( "Thumbnails") .setOptions( TaskOption.ProtectedConfiguration).setName( "Thumbnails")) 

有没有人有一个使用java的这个任务的工作示例？

Answer 1

简答：

这个答案适用于azure-media maven软件包版本0.6.0到0.8.x.

您应该在create方法上使用通常的XML，并通过setConfiguration设置缩略图XML，如下例所示：

 // Create the Thumbnail task String xmlThumbnail = "" + "" + ""; Task.CreateBatchOperation task = Task .create(mediaProcessor.getId(), "JobInputAsset(0)JobOutputAsset(0)") .setConfiguration(xmlThumbnail) .setName("MakeThumbnailTask"); 

完整示例：

用法 ：

 MakeThumbnail(mediaService, "50%,*", "10%"); 

代码 ：

 private void MakeThumbnail(MediaContract mediaService, String size, String time) throws ServiceException, InterruptedException, MalformedURLException { // Use the Azure Media Encoder, by specifying it by name. ListResult mediaProcessors = mediaService .list(MediaProcessor.list().set("$filter", "Name eq 'Azure Media Encoder'")); // Use the latest version of the media processor. MediaProcessorInfo mediaProcessor = null; for (MediaProcessorInfo info : mediaProcessors) { if (null == mediaProcessor || info.getVersion().compareTo(mediaProcessor.getVersion()) > 0) { mediaProcessor = info; } } // Create the Thumbnail task String xmlThumbnail = "" + "" + ""; Task.CreateBatchOperation task = Task .create(mediaProcessor.getId(), "JobInputAsset(0)JobOutputAsset(0)") .setConfiguration(xmlThumbnail) .setName("MakeThumbnailTask"); // Create a job creator that specifies the asset, priority and task for the job. Job.Creator jobCreator = Job.create().setName("MakeThumbnailTask").addInputMediaAsset("nb:cid:UUID:ec25435d-1500-80c3-dd89-f1e528b02207").setPriority(2) .addTaskCreator(task); JobInfo jobInfo = mediaService.create(jobCreator); String jobId = jobInfo.getId(); // Check to see if the job has completed. CheckJobStatus(jobId); // Done with the job. // Retrieve the output asset. ListResult outputAssets = mediaService.list(Asset.list(jobInfo.getOutputAssetsLink())); AssetInfo thumbnailAsset = outputAssets.get(0); AccessPolicyInfo downloadAccessPolicy = null; double t100years = 100.0 * 365.0 * 24.0 * 60.0; downloadAccessPolicy = mediaService .create(AccessPolicy.create("Public Thumbnail Policy", t100years, EnumSet.of(AccessPolicyPermission.READ))); LocatorInfo downloadLocator = null; downloadLocator = mediaService .create(Locator.create(downloadAccessPolicy.getId(), thumbnailAsset.getId(), LocatorType.SAS)); // Lookup the output asset file ListResult assetFiles = mediaService.list(AssetFile.list(thumbnailAsset.getAssetFilesLink())); AssetFileInfo jpegFile = null; for (AssetFileInfo outputAssetFile : assetFiles) { // check if primary output. if (outputAssetFile.getIsPrimary()) { jpegFile = outputAssetFile; } } // Adding the file name to the URL String imageUrl = downloadLocator.getPath().replaceAll("\\?", "/" + jpegFile.getName() + "?"); System.out.println("Created Thumbnail JPEG URL: " + imageUrl); }