如何从Amazon Elastic Transcoder获取视频持续时间？

Question

即时通讯使用此服务，但需要知道视频长度，但在AWS文档中没有信息或AWS响应。

Answer 1

Get job方法返回一个包含输出持续时间的响应。见下面的例子：

{ 
    "Job":{ 
    "Id":"Id that Elastic Transcoder assigned to the job", 
    "Input":{ 
    "AspectRatio":"auto|1:1|4:3|3:2|16:9", 
    "Container":"auto|3gp|asf|avi|divx|flv|mkv|mov|mp4| 
     mpeg|mpeg-ps|mpeg-ts|mxf|ogg|vob|wav|webm", 
    "FrameRate":"auto|10|15|23.97|24|25|29.97|30|60", 
    "Interlaced":"auto|true|false", 
    "Key":"name of the file to transcode", 
    "Resolution":"auto" 
    }, 
    "Output":{ 
    "Duration":"duration in seconds", 
    "Height":"height in pixels", 
    "Id":"sequential counter", 
    "Key":"name of the transcoded file", 
    "PresetId":"PresetId for the job", 
    "Rotate":"auto|0|90|180|270", 
    "SegmentDuration":"[1,60]", 
    "Status":"Submitted|In Progress|Complete|Canceled|Error", 
    "StatusDetail":"additional information about job status", 
    "ThumbnailPattern":""|"pattern", 
    "Width":"width in pixels" 
    }, 
    "Outputs":[ 
    { 
     "Duration":"duration in seconds", 
     "Height":"height in pixels", 
     "Id":"sequential counter", 
     "Key":"name of the transcoded file", 
     "PresetId":"PresetId for the job", 
     "Rotate":"auto|0|90|180|270", 
     "SegmentDuration":"[1,60]", 
     "Status":"Submitted|In Progress|Complete|Canceled|Error", 
     "StatusDetail":"additional information about job status", 
     "ThumbnailPattern":""|"pattern", 
     "Width":"width in pixels" 
    }, 
    {...} 
    ], 
    "PipelineId":"Id of the pipeline that transcoded the job", 
    "Playlists":[ 
    { 
     "Format":"HLSv3", 
     "Name":"name, no/character allowed", 
     "OutputKeys":[ 
      "Outputs:Key to include in this playlist", 
      ... 
     ] 
    }, 
    {...} 
    ], 
    "Status":"Submitted|Progressing|Complete|Canceled|Error" 
} 
} 

欲了解更多信息，请参阅：http://docs.aws.amazon.com/elastictranscoder/latest/developerguide/get-job.html