列出預設

Description (描述)

欲取得與目前 AWS 帳戶相關聯的所有預設清單，請將 GET 請求傳送到 /2012-09-25/presets 資源。

請求

Syntax (語法)

GET /2012-09-25/presets/Ascending=true|false&
                PageToken=value for accessing the next page of 
                results HTTP/1.1 Content-Type: charset=UTF-8
Accept: */*
Host: elastictranscoder.Elastic Transcoder endpoint.amazonaws.com:443
x-amz-date: 20130114T174952Z
Authorization: AWS4-HMAC-SHA256
               Credential=AccessKeyID/request-date/Elastic Transcoder endpoint/elastictranscoder/aws4_request,
               SignedHeaders=host;x-amz-date;x-amz-target,
               Signature=calculated-signature

請求參數

此操作採用下列請求參數。Elastic Transcoder 會回傳所有可用預設。

升高

若要依照所提交的日期及時間依序列出預設，請輸入 true。若要依照相反的時間順序列出預設，請輸入 false。

頁面令牌

當 Elastic Transcoder 會回多個結果頁面時，使用PageToken在後續GET請求來取得每次的連續結果頁面。

請求標頭

此操作僅使用所有操作常見的請求標頭。如需常見請求標頭的資訊，請參閱 HTTP 標頭內容。

請求主體

請求內文中的 JSON 字串包含以下物件。

回應

Syntax (語法)

Status: 200 OK
x-amzn-RequestId: c321ec43-378e-11e2-8e4c-4d5b971203e9
Content-Type: application/json
Content-Length: number of characters in the response
Date: Mon, 14 Jan 2013 06:01:47 GMT

{
   "Presets":[
      {
         "Id":"preset ID",
         "Type":"Custom|System",
         "Name":"preset name",
         "Description":"preset description",
         "Container":"flac|flv|fmp4|gif|mp2|mp3|mp4|mpg|mxf|oga|ogg|ts|wav|webm",
         "Audio":{
            "Codec":"AAC|flac|mp2|mp3|pcm|vorbis",
            "CodecOptions":{
               "Profile":"auto|AAC-LC|HE-AAC|HE-AACv2",
               "BitDepth":"8|16|24|32",
               "Signed":"Signed|Unsigned",
               "BitOrder":"LittleEndian"
            },
            "SampleRate":"auto|22050|32000|44100|48000|96000",
            "BitRate":"audio bit rate of output file in kilobits/second",
            "Channels":"auto|0|1|2",
            "AudioPackingMode":"SingleTrack|OneChannelPerTrack|
               OneChannelPerTrackWithMosTo8Tracks"
         },
         "Video":{
            "Codec":"gif|H.264|mpeg2|vp8|vp9",
            "CodecOptions":{
               "Profile":"baseline|main|high|0|1|2|3",
               "Level":"1|1b|1.1|1.2|1.3|2|2.1|2.2|3|3.1|3.2|4|4.1",
               "MaxReferenceFrames":maximum number of reference frames,
               "MaxBitRate":"maximum bit rate",
               "BufferSize":"maximum buffer size",
               "InterlacedMode":"Progressive|TopFirst|BottomFirst|Auto",
               "ColorSpaceConversionMode":"None|Bt709ToBt601|Bt601ToBt709|Auto",
               "ChromaSubsampling":"yuv420p|yuv422p",
               "LoopCount":"Infinite|[0,100]"
            },
            "KeyframesMaxDist":maximum frames between key frames,
            "FixedGOP":"true|false",
            "BitRate":"auto|video bit rate of output file in kilobits/second",
            "FrameRate":"auto|10|15|23.97|24|25|29.97|30|50|60",
            "MaxFrameRate":"10|15|23.97|24|25|29.97|30|50|60",
            "MaxWidth":"auto|[128,4096]",
            "MaxHeight":"auto|[96,3072]",
            "SizingPolicy":"Fit|Fill|Stretch|Keep|ShrinkToFit|ShrinkToFill",
            "PaddingPolicy":"Pad|NoPad",
            "DisplayAspectRatio":"auto|1:1|4:3|3:2|16:9",
            "Resolution":"width in pixelsxheight in pixels" <not recommended>,
            "AspectRatio":"auto|1:1|4:3|3:2|16:9" <not recommended>
            "Watermarks":[
               {
                  "Id":"unique identifier up to 40 characters",
                  "MaxWidth":"[16,Video:MaxWidth]px|[0,100]%",
                  "MaxHeight":"[16,Video:MaxHeight]px|[0,100]%", 
                  "SizingPolicy":"Fit|Stretch|ShrinkToFit",
                  "HorizontalAlign":"Left|Right|Center",
                  "HorizontalOffset":"[0,100]%|[0,Video:MaxWidth]px",
                  "VerticalAlign":"Top|Bottom|Center",
                  "VerticalOffset":"[0,100]%|[0,Video:MaxHeight]px",
                  "Opacity":"[0,100]",
                  "Target":"Content|Frame"
               }
            ]
         },   
         "Thumbnails":{
            "Format":"jpg|png",
            "Interval":"number of seconds between thumbnails",
            "MaxWidth":"auto|[32,4096]",
            "MaxHeight":"auto|[32,3072]",
            "SizingPolicy":"Fit|Fill|Stretch|Keep|ShrinkToFit|ShrinkToFill",
            "PaddingPolicy":"Pad|NoPad",
            "Resolution":"width in pixelsxheight in pixels",
            "AspectRatio":"auto|1:1|4:3|3:2|16:9"
         },
      },
      {...},
   ],
   "NextPageToken":value for accessing the next page of results|null
}

回應標頭

此操作僅使用大部分回應常見的回應標頭。如需常見回應標頭的資訊，請參閱 HTTP 回應。

回應內文

回應本文的 JSON 字串會回傳您建立預設時指定的值。如需個別物件的詳細資訊，請參閱您在建立 Elastic Transcoder 預設集時指定的設定。

此外，Elastic Transcoder 會回傳下列值。

(自動) Id

預設的識別碼。您可使用此值來取得預設的設定，或將之刪除。

(自動) Type

預設是否為 Elastic Transcoder 提供的默認預設（System）或您定義的預設（Custom。

(自動) NextPageToken

用於訪問結果的第二頁和後續頁面（如果有）的值。當預設適合一個頁面或達到結果的最後一頁時，NextPageToken是null。

錯誤

如需 Elastic Transcoder 例外和錯誤訊息的詳細資訊，請參處理 Elastic Transcoder 中的錯誤。

範例

以下範例請求建立名為 DefaultPreset 的預設。

請求範例

GET /2012-09-25/presets HTTP/1.1
Content-Type: charset=UTF-8
Accept: */*
Host: elastictranscoder.Elastic Transcoder endpoint.amazonaws.com:443
x-amz-date: 20130114T174952Z
Authorization: AWS4-HMAC-SHA256
               Credential=AccessKeyID/request-date/Elastic Transcoder endpoint/elastictranscoder/aws4_request,
               SignedHeaders=host;x-amz-date;x-amz-target,
               Signature=calculated-signature

回應範例

Status: 200 OK
x-amzn-RequestId: c321ec43-378e-11e2-8e4c-4d5b971203e9
Content-Type: application/json
Content-Length: number of characters in the response
Date: Mon, 14 Jan 2013 06:01:47 GMT

{
   "Presets":[
      {
         "Id":"5555555555555-abcde5",
         "Type":"Custom",
         "Name":"DefaultPreset",
         "Description":"Use for published videos",
         "Container":"mp4",
         "Audio":{
            "BitRate":"96",
            "Channels":"2",
            "Codec":"AAC",
            "CodecOptions":{
               "Profile":"AAC-LC"
            },
            "SampleRate":"44100"
         },
         "Video":{
            "Codec":"H.264",
            "CodecOptions":{
               "Profile":"main",
               "Level":"2.2",
               "MaxReferenceFrames":"3",
               "MaxBitRate":"",
               "BufferSize":"",
               "InterlacedMode":"Progressive",
               "ColorSpaceConversionMode":"None"
            },
            "KeyframesMaxDist":"240",
            "FixedGOP":"false",
            "BitRate":"1600",
            "FrameRate":"auto",
            "MaxFrameRate":"30",
            "MaxWidth":"auto",
            "MaxHeight":"auto",
            "SizingPolicy":"Fit",
            "PaddingPolicy":"Pad",
            "DisplayAspectRatio":"auto",
            "Watermarks":[
               {
                  "Id":"company logo",
                  "MaxWidth":"20%",
                  "MaxHeight":"20%", 
                  "SizingPolicy":"ShrinkToFit",
                  "HorizontalAlign":"Right",
                  "HorizontalOffset":"10px",
                  "VerticalAlign":"Bottom",
                  "VerticalOffset":"10px",
                  "Opacity":"55.5",
                  "Target":"Content"
               }
            ]
         }
         "Thumbnails":{
            "Format":"png",
            "Interval":"120",
            "MaxWidth":"auto",
            "MaxHeight":"auto",
            "SizingPolicy":"Fit",
            "PaddingPolicy":"Pad"
         },
      },
      {...}
   ]
}