Java的Azure Media Services，如何获得一系列缩略图

Question

获得一个缩略图效果很好，但是要获得一系列的缩略图，则发生了例外。这样的代码：

  String taskXml = new StringBuilder(StringUtils.EMPTY)//
            .append("<taskBody>")//
            .append(" <inputAsset>JobInputAsset(0)</inputAsset>")//
            .append(" <outputAsset assetCreationOptions="0" assetName="" + outputAssetName
                    + "">JobOutputAsset(0)</outputAsset>")//
            .append("</taskBody>").toString();//
    String preset = new StringBuilder(StringUtils.EMPTY)//
            .append("<Preset xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="1.0" xmlns="http://www.windowsazure.com/media/encoding/Preset/2014/03">")
            .append("<Encoding>")//
            .append(" <PngImage Start="{Best}">") //  get one thumbnail 
            // .append(" <PngImage Start="5%" Step="10%" Range="96%">") //  get series of  thumbnails
            .append("       <PngLayers>")//
            .append("           <PngLayer>")//
            .append("               <Width>100%</Width>")//
            .append("               <Height>100%</Height>")//
            .append("           </PngLayer>")//
            .append("       </PngLayers>")//
            .append("   </PngImage>")//
            .append("</Encoding>")//
            .append("<Outputs>")//
            .append("  <Output FileName="{Basename}_{Index}{Extension}">")//
            .append("       <PngFormat />")//
            .append("   </Output>")//
            .append("</Outputs>")//
            .append("</Preset>")//
            .toString();
    Task.CreateBatchOperation task =
            Task.create(mediaProcessorInfo.getId(), taskXml).setConfiguration(preset).setName("Thumbnails");

" <PngImage Start="{Best}">"运行良好，" <PngImage Start="5%" Step="10%" Range="96%">"异常发生（"发生了错误。

顺便说一句，我可以获得一系列具有相同图片的缩略图吗？

Answer 1

当我尝试从此处获取代码并编码您提供的代码时，我没有重现您的异常An error has occurred. Stage: ApplyEncodeCommand. Code: 0x00000001.。

public static void test(AssetInfo assetToEncode) throws ServiceException, InterruptedException {
        String preset = new StringBuilder(StringUtils.EMPTY)//
                .append("<Preset xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="1.0" xmlns="http://www.windowsazure.com/media/encoding/Preset/2014/03">")
                .append("<Encoding>")//
//              .append(" <PngImage Start="{Best}">") // get one thumbnail
                 .append(" <PngImage Start="5%" Step="10%" Range="96%">") // get series of thumbnails
                .append("       <PngLayers>")//
                .append("           <PngLayer>")//
                .append("               <Width>100%</Width>")//
                .append("               <Height>100%</Height>")//
                .append("           </PngLayer>")//
                .append("       </PngLayers>")//
                .append("   </PngImage>")//
                .append("</Encoding>")//
                .append("<Outputs>")//
                .append("  <Output FileName="{Basename}_{Index}{Extension}">")//
                .append("       <PngFormat />")//
                .append("   </Output>")//
                .append("</Outputs>")//
                .append("</Preset>")//
                .toString();
        // Retrieve the list of Media Processors that match the name
        ListResult<MediaProcessorInfo> mediaProcessors = mediaService
                .list(MediaProcessor.list().set("$filter", String.format("Name eq '%s'", preferedEncoder)));
        // 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;
            }
        }
        System.out.println("Using Media Processor: " + mediaProcessor.getName() + " " + mediaProcessor.getVersion());

        // Create a task with the specified Media Processor
        String outputAssetName = String.format("%s as %s", assetToEncode.getName(), preset);
        String taskXml = new StringBuilder(StringUtils.EMPTY)//
                .append("<taskBody>")//
                .append(" <inputAsset>JobInputAsset(0)</inputAsset>")//
                .append(" <outputAsset assetCreationOptions="0" assetName="" + outputAssetName
                        + "">JobOutputAsset(0)</outputAsset>")//
                .append("</taskBody>").toString();//

        Task.CreateBatchOperation task = Task.create(mediaProcessor.getId(), taskXml).setConfiguration(preset)
                .setName("Thumbnails");
        // Create the Job; this automatically schedules and runs it.
        Job.Creator jobCreator = Job.create()
                .setName(String.format("Encoding %s to %s", assetToEncode.getName(), preset))
                .addInputMediaAsset(assetToEncode.getId()).setPriority(2).addTaskCreator(task);
        JobInfo job = mediaService.create(jobCreator);
        String jobId = job.getId();
        System.out.println("Created Job with Id: " + jobId);
        // Check to see if the Job has completed
        checkJobStatus(jobId);
    }

很棒，您已经解决了这个问题。原来是unormal video file。

感谢您的分享。