支援終止通知：2025 年 11 月 13 日， AWS 將停止對 Amazon Elastic Transcoder 的支援。2025 年 11 月 13 日之後，您將無法再存取 Elastic Transcoder 主控台或 Elastic Transcoder 資源。
如需轉換至 的詳細資訊 AWS Elemental MediaConvert，請造訪此[部落格文章](https://aws.amazon.com/blogs/media/how-to-migrate-workflows-from-amazon-elastic-transcoder-to-aws-elemental-mediaconvert/)。
本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。
# 列出預設
**Topics**
+ [描述](#list-presets-description)
+ [請求](#list-presets-requests)
+ [回應](#list-presets-responses)
+ [錯誤](#list-presets-response-errors)
+ [範例](#list-presets-examples)
## 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
### 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
此操作會採用下列請求參數。Elastic Transcoder 會傳回所有可用的預設集。
**遞增**
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`。
**PageToken**
當 Elastic Transcoder 傳回超過一頁的結果時，請在後續`GET`請求`PageToken`中使用 以取得每個連續頁面的結果。
### 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](making-http-requests.md#http-request-header)。
### 請求主體
請求內文中的 JSON 字串包含以下物件。
## 回應
### 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" ,
"AspectRatio":"auto|1:1|4:3|3:2|16:9"
"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](making-http-requests.md#http-response-header)。
### 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](preset-settings.md)。
此外，Elastic Transcoder 會傳回下列值。
**（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） 類型**
預設是 Elastic Transcoder (`System`) 提供的預設預設，還是您定義的預設集 (`Custom`)。
**（自動） NextPageToken**
您用來存取結果第二頁和後續頁面的值，如果有的話。當預設集符合一頁或當您達到結果的最後一頁時， 的值`NextPageToken`為 `null`。
## 錯誤
如需 Elastic Transcoder 例外狀況和錯誤訊息的相關資訊，請參閱[處理 Elastic Transcoder 中的錯誤](error-handling.md)。
## 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"
},
},
{...}
]
}
```