Azure媒体服务视频轮播

Question

I am trying to get my videos to play properly using Azure Media Services. Videos that are taken in Portrait mode do not play properly, they are not rotated. here is my codes (taken from the Azure Media Services Sample)

 Dim filenamewithpath As String = Server.MapPath("." & "\video2.mp4")
        Dim filename As String = Path.GetFileName(filenamewithpath)
        Dim preset As String = "H264 Adaptive Bitrate MP4 Set 720p"
        FileVideo.SaveAs(filenamewithpath)

        ' Create and cache the Media Services credentials in a static class variable.

        Dim assetName = "UploadSingleFile_" + DateTime.UtcNow.ToString()
        Dim asset As IAsset = _context.Assets.Create(assetName, AssetCreationOptions.None)
        Dim assetFile = asset.AssetFiles.Create(filename)
        Dim accessPolicy As IAccessPolicy = _context.AccessPolicies.Create(assetName, TimeSpan.FromDays(30), _
                AccessPermissions.Write Or AccessPermissions.List)
        Dim locator As ILocator = _context.Locators.CreateLocator(LocatorType.Sas, asset, accessPolicy)
        assetFile.Upload(filenamewithpath)

        ' Declare a new job.
        Dim job As IJob = _context.Jobs.Create(preset + " encoding job")
        Dim mediaProcessors = _context.MediaProcessors.Where(Function(p) p.Name.Contains("Media Encoder")).ToList()

        Dim latestMediaProcessor = mediaProcessors.OrderBy(Function(mp) New Version(mp.Version)).LastOrDefault()


        ' Create a task with the encoding details, using a string preset.
        Dim task As ITask = job.Tasks.AddNew(preset + " encoding task", latestMediaProcessor, preset, Microsoft.WindowsAzure.MediaServices.Client.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 asset", AssetCreationOptions.None)
        job.Submit()


        ' Check job execution and wait for job to finish. 
        Dim progressJobTask As Task = job.GetExecutionProgressTask(CancellationToken.None)
        progressJobTask.Wait()

        ' If job state is Error the event handling 
        ' method for job progress should log errors.  Here we check 
        ' for error state and exit if needed.
        If job.State = JobState.[Error] Then
            Throw New Exception(vbLf & "Exiting method due to job error.")
        End If

        Dim MP4Asset As IAsset = job.OutputMediaAssets(0)
        ' BuildSasUrlForMP4File creates a SAS Locator
        ' and builds the SAS Url that can be used to 
        ' progressively download the MP4 file.
        Dim fullSASURL As String = BuildSasUrlForMP4File(MP4Asset)
        Dim streamingURL As String _
            = GetStreamingOriginLocatorURL(MP4Asset)
        fullSASURL = "http://aka.ms/azuremediaplayeriframe?url=" &  fullSASURL _
            & "&autoplay=false"

In this link: http://azure.microsoft.com/blog/2014/08/21/advanced-encoding-features-in-azure-media-encoder/

It shows that Azure Media Services can rotate automatically with:

<Presets Rotation="Auto">
 <Preset
   Version="5.0">

But I can't figure out how to incorporate this in my code.

Thanks

Answer 1

OK, here is at least one solution that I have been able to dig up:

1) Obtain the XML for the preset you are trying to use. In my case, I was using the present for "H264 Adaptive Bitrate MP4 Set 720p". In my code above, this was in the string "preset".

2) Instead of using this string, use the entire XML file for the preset.

3) Change the xml Presets tag to Presets Rotation="Auto"

Here is link to get the presets (there may be others) https://github.com/AzureMediaServicesSamples/Encoding-Presets/tree/master/VoD/Azure%20Media%20Encoder

Create a new XML file with (I put mine in the root directory of my website -named config1.xml). Here is the XML for my preset:

<Presets Rotation="Auto">
 <Preset
   Version="5.0">
   <Job />
   <MediaFile
     DeinterlaceMode="AutoPixelAdaptive"
     ResizeQuality="Super"
     AudioGainLevel="1"
     VideoResizeMode="Stretch">
     <Metadata
       MergeCollection="True">
       <Item
         Name="WM/EncodedBy"
         Value="Azure Media Encoder 4 - H264 Adaptive Bitrate MP4 Set 720p, 07/30/2014 " />
     </Metadata>    
     <OutputFormat>
       <MP4OutputFormat
         StreamCompatibility="Standard">
         <VideoProfile>
           <MainH264VideoProfile
             BFrameCount="3"
             EntropyMode="Cabac"
             RDOptimizationMode="Speed"
             HadamardTransform="False"
             SubBlockMotionSearchMode="Speed"
             MultiReferenceMotionSearchMode="Balanced"
             ReferenceBFrames="False"
             AdaptiveBFrames="False"
             SceneChangeDetector="False"
             FastIntraDecisions="False"
             FastInterDecisions="False"
             SubPixelMode="Quarter"
             SliceCount="0"
             KeyFrameDistance="00:00:02"
             InLoopFilter="True"
             MEPartitionLevel="EightByEight"
             ReferenceFrames="4"
             SearchRange="64"
             AutoFit="True"
             Force16Pixels="False"
             FrameRate="0"
             SeparateFilesPerStream="True"
             SmoothStreaming="False"
             NumberOfEncoderThreads="0">
             <Streams
               AutoSize="False"
               FreezeSort="False">
               <StreamInfo
                 Size="1280, 720">
                 <Bitrate>
                   <ConstantBitrate
                     Bitrate="3400"
                     IsTwoPass="False"
                     BufferWindow="00:00:05" />
                 </Bitrate>
               </StreamInfo>
               <StreamInfo
                 Size="960, 540">
                 <Bitrate>
                   <ConstantBitrate
                     Bitrate="2250"
                     IsTwoPass="False"
                     BufferWindow="00:00:05" />
                 </Bitrate>
               </StreamInfo>
               <StreamInfo
                 Size="960, 540">
                 <Bitrate>
                   <ConstantBitrate
                     Bitrate="1500"
                     IsTwoPass="False"
                     BufferWindow="00:00:05" />
                 </Bitrate>
               </StreamInfo>
               <StreamInfo
                 Size="640, 360">
                 <Bitrate>
                   <ConstantBitrate
                     Bitrate="1000"
                     IsTwoPass="False"
                     BufferWindow="00:00:05" />
                 </Bitrate>
               </StreamInfo>
               <StreamInfo
                 Size="640, 360">
                 <Bitrate>
                   <ConstantBitrate
                     Bitrate="650"
                     IsTwoPass="False"
                     BufferWindow="00:00:05" />
                 </Bitrate>
               </StreamInfo>              
               <StreamInfo
                 Size="320, 180">
                 <Bitrate>
                   <ConstantBitrate
                     Bitrate="400"
                     IsTwoPass="False"
                     BufferWindow="00:00:05" />
                 </Bitrate>
               </StreamInfo>                          
             </Streams>
           </MainH264VideoProfile>
         </VideoProfile>
         <AudioProfile>
           <AacAudioProfile
             Codec="AAC"
             Channels="2"
             BitsPerSample="16"
             SamplesPerSecond="44100">
             <Bitrate>
               <ConstantBitrate
                 Bitrate="96"
                 IsTwoPass="False"
                 BufferWindow="00:00:00" />
             </Bitrate>
           </AacAudioProfile>
         </AudioProfile>
       </MP4OutputFormat>
     </OutputFormat>
   </MediaFile>
 </Preset>
  <Preset
  Version="5.0">
    <Job />
    <MediaFile
      AudioGainLevel="1">
      <Metadata
        MergeCollection="True">
        <Item
          Name="WM/EncodedBy"
          Value="Azure Media Encoder 3 - H264 Adaptive Bitrate MP4 Set 720p, 07/30/2014 " />
      </Metadata>
      <OutputFormat>
        <MP4OutputFormat
          StreamCompatibility="Standard">
          <AudioProfile>
            <AacAudioProfile
              Codec="AAC"
              Channels="2"
              BitsPerSample="16"
              SamplesPerSecond="44100">
              <Bitrate>
                <ConstantBitrate
                  Bitrate="96"
                  IsTwoPass="False"
                  BufferWindow="00:00:00" />
              </Bitrate>
            </AacAudioProfile>
          </AudioProfile>
        </MP4OutputFormat>
      </OutputFormat>
    </MediaFile>
  </Preset>
  <Preset
   Version="5.0">
   <Job />
   <MediaFile
     AudioGainLevel="1">
     <Metadata
       MergeCollection="True">
       <Item
         Name="WM/EncodedBy"
         Value="Azure Media Encoder 3 - H264 Adaptive Bitrate MP4 Set 720p, 07/30/2014 " />
     </Metadata>    
     <OutputFormat>
       <MP4OutputFormat
         StreamCompatibility="Standard">
         <AudioProfile>
           <AacAudioProfile
             Codec="AAC"
             Channels="2"
             BitsPerSample="16"
             SamplesPerSecond="44100">
             <Bitrate>
               <ConstantBitrate
                 Bitrate="56"
                 IsTwoPass="False"
                 BufferWindow="00:00:00" />
             </Bitrate>
           </AacAudioProfile>
         </AudioProfile>
       </MP4OutputFormat>
     </OutputFormat>
   </MediaFile>
 </Preset>
</Presets>

Here are the changes in my code from above:

 Dim configuration1 As String = File.ReadAllText(Server.MapPath("config1.xml"))
 Dim task As ITask = job.Tasks.AddNew(preset + " encoding task", _
               latestMediaProcessor, configuration1, _
              TaskOptions.None)

Note that you can remove the preset field as it is no longer needed.