Windows Azure Media Services を使用して、ビデオ ファイルをアップロードし、エンコードしてから公開しています。Windows Azure Media Services サンプル コードを使用してファイルをエンコードしましたが、コードを使用して ".mp4" ファイルを Apple HLS に変換すると、iOS デバイスで正しく機能しないことがわかりました。オーディオのみが再生され、ビデオは表示されません。一方、Windows Azure Media Services Portal を使用して HLS でファイルをエンコードおよび公開すると、iOS デバイス (オーディオとビデオの両方の再生) で完全に正常に動作します。
私はこれについて何日も頭を悩ませてきましたが、誰かが（コードを介して）エンコードプロセスについて私を案内してくれることを本当に義務付けられていますか？
これは私が今まで持っているものです！
static IAsset CreateEncodingJob(IAsset asset)
{
// Declare a new job.
IJob job = _context.Jobs.Create("My encoding job");
// Get a media processor reference, and pass to it the name of the
// processor to use for the specific task.
IMediaProcessor processor = GetLatestMediaProcessorByName("Windows Azure Media Encoder");
// Create a task with the encoding details, using a string preset.
ITask task = job.Tasks.AddNew("My encoding task",
processor,
"H264 Broadband SD 4x3",
TaskOptions.ProtectedConfiguration);
// Specify the input asset to be encoded.
task.InputAssets.Add(asset);
// Add an output asset to contain the results of the job.
// This output is specified as AssetCreationOptions.None, which
// means the output asset is in the clear (unencrypted).
task.OutputAssets.AddNew("Output MP4 asset",
true,
AssetCreationOptions.None);
// Launch the job.
job.Submit();
// Checks job progress and prints to the console.
CheckJobProgress(job.Id);
// Get an updated job reference, after waiting for the job
// on the thread in the CheckJobProgress method.
job = GetJob(job.Id);
// Get a reference to the output asset from the job.
IAsset outputAsset = job.OutputMediaAssets[0];
return outputAsset;
}
static IAsset CreateMp4ToSmoothJob(IAsset asset)
{
// Read the encryption configuration data into a string.
string configuration = File.ReadAllText(Path.GetFullPath(_configFilePath + @"\MediaPackager_MP4ToSmooth.xml"));
//Publish the asset.
//GetStreamingOriginLocatorformp4(asset.Id);
// Declare a new job.
IJob job = _context.Jobs.Create("My MP4 to Smooth job");
// Get a media processor reference, and pass to it the name of the
// processor to use for the specific task.
IMediaProcessor processor = GetLatestMediaProcessorByName("Windows Azure Media Packager");
// Create a task with the encoding details, using a configuration file. Specify
// the use of protected configuration, which encrypts sensitive config data.
ITask task = job.Tasks.AddNew("My Mp4 to Smooth Task",
processor,
configuration,
TaskOptions.ProtectedConfiguration);
// Specify the input asset to be encoded.
task.InputAssets.Add(asset);
// Add an output asset to contain the results of the job.
task.OutputAssets.AddNew("Output Smooth asset",
true,
AssetCreationOptions.None);
// Launch the job.
job.Submit();
// Checks job progress and prints to the console.
CheckJobProgress(job.Id);
job = GetJob(job.Id);
IAsset outputAsset = job.OutputMediaAssets[0];
// Optionally download the output to the local machine.
//DownloadAssetToLocal(job.Id, _outputIsmFolder);
return outputAsset;
}
// Shows how to encode from smooth streaming to Apple HLS format.
static IAsset CreateSmoothToHlsJob(IAsset outputSmoothAsset)
{
// Read the encryption configuration data into a string.
string configuration = File.ReadAllText(Path.GetFullPath(_configFilePath + @"\MediaPackager_SmoothToHLS.xml"));
//var getismfile = from p in outputSmoothAsset.Files
// where p.Name.EndsWith(".ism")
// select p;
//IAssetFile manifestFile = getismfile.First();
//manifestFile.IsPrimary = true;
var ismAssetFiles = outputSmoothAsset.AssetFiles.ToList().Where(f => f.Name.EndsWith(".ism", StringComparison.OrdinalIgnoreCase)).ToArray();
if (ismAssetFiles.Count() != 1)
throw new ArgumentException("The asset should have only one, .ism file");
ismAssetFiles.First().IsPrimary = true;
ismAssetFiles.First().Update();
//Use the smooth asset as input asset
IAsset asset = outputSmoothAsset;
// Declare a new job.
IJob job = _context.Jobs.Create("My Smooth Streams to Apple HLS job");
// Get a media processor reference, and pass to it the name of the
// processor to use for the specific task.
IMediaProcessor processor = GetMediaProcessor("Smooth Streams to HLS Task");
// Create a task with the encoding details, using a configuration file.
ITask task = job.Tasks.AddNew("My Smooth to HLS Task", processor, configuration, TaskOptions.ProtectedConfiguration);
// Specify the input asset to be encoded.
task.InputAssets.Add(asset);
// Add an output asset to contain the results of the job.
task.OutputAssets.AddNew("Output HLS asset", true, AssetCreationOptions.None);
// Launch the job.
job.Submit();
// Checks job progress and prints to the console.
CheckJobProgress(job.Id);
// Optionally download the output to the local machine.
//DownloadAssetToLocal(job.Id, outputFolder);
job = GetJob(job.Id);
IAsset outputAsset = job.OutputMediaAssets[0];
return outputAsset;
}