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。

# 範例加速轉碼任務設定 JSON
<a name="sample-acceleration-job-settings-in-json"></a>

以下範例 JSON 任務會將 MP4 檔案轉換為另一個 MP4 檔案 (使用 H.265 編碼的 720p)。若要使用這個範例，請使用您的值取代設定。您至少必須提供下列設定值：
+ `Role`：這是 AWS Identity and Access Management 您設定的 (IAM) 角色，可讓您 AWS Elemental MediaConvert 存取輸入和輸出 Amazon S3 儲存貯體，以及代表您存取 Amazon API Gateway。如需有關設定此角色的資訊，請參閱*AWS Elemental MediaConvert 《 使用者指南*》中的[設定 IAM 許可](https://docs.aws.amazon.com/mediaconvert/latest/ug/iam-role.html)。
+ `Destination`：您希望 MediaConvert 存放輸出檔案的 Amazon S3 儲存貯體。務必包含節尾斜線，如範例所示。
+ `InputClippings`：指定 `StartTimecode` 和 `EndTimecode` 的值集，以定義您要轉碼的剪輯。或者，您可以完全移除 `InputClippings` 以進行整個資產的轉碼。
+ **`FileInput`**：為您的輸入檔指定檔案名稱和位置。您的檔案輸入可以是 Amazon S3 物件或 HTTP URL。

  只有單一輸入的任務可支援加速轉碼；您無法進行輸入拼接。

```
{
  "Role": "arn:aws:iam::123456789012:role/MediaConvert_Role",
  "AccelerationSettings" : {
    "Mode" : "ENABLED"
  },
  "UserMetadata": {
      "job" : "Acceleration"
  },
  "Settings": {
    "TimecodeConfig": {
      "Source": "ZEROBASED"
    },
    "OutputGroups": [
      {
        "Name": "File Group",
        "Outputs": [
          {
            "ContainerSettings": {
              "Container": "MP4",
              "Mp4Settings": {
                "CslgAtom": "EXCLUDE",
                "FreeSpaceBox": "EXCLUDE",
                "MoovPlacement": "NORMAL"
              }
            },
            "VideoDescription": {
              "Width": 1280,
              "ScalingBehavior": "DEFAULT",
              "Height": 720,
              "VideoPreprocessors": {
                "TimecodeBurnin": {
                  "FontSize": 32,
                  "Position": "TOP_CENTER"
                }
              },
              "TimecodeInsertion": "DISABLED",
              "AntiAlias": "ENABLED",
              "Sharpness": 50,
              "CodecSettings": {
                "Codec": "H_265",
                "H265Settings": {
                  "InterlaceMode": "PROGRESSIVE",
                  "ParNumerator": 1,
                  "NumberReferenceFrames": 3,
                  "FramerateDenominator": 1001,
                  "GopClosedCadence": 1,
                  "AlternateTransferFunctionSei": "DISABLED",
                  "HrdBufferInitialFillPercentage": 90,
                  "GopSize": 48,
                  "Slices": 4,
                  "GopBReference": "ENABLED",
                  "HrdBufferSize": 20000000,
                  "SlowPal": "DISABLED",
                  "ParDenominator": 1,
                  "SpatialAdaptiveQuantization": "ENABLED",
                  "TemporalAdaptiveQuantization": "ENABLED",
                  "FlickerAdaptiveQuantization": "DISABLED",
                  "Bitrate": 10000000,
                  "FramerateControl": "INITIALIZE_FROM_SOURCE",
                  "RateControlMode": "CBR",
                  "CodecProfile": "MAIN_MAIN",
                  "Tiles": "ENABLED",
                  "Telecine": "NONE",
                  "FramerateNumerator": 24000,
                  "MinIInterval": 0,
                  "AdaptiveQuantization": "HIGH",
                  "CodecLevel": "LEVEL_5",
                  "SceneChangeDetect": "ENABLED",
                  "QualityTuningLevel": "SINGLE_PASS_HQ",
                  "FramerateConversionAlgorithm": "DUPLICATE_DROP",
                  "UnregisteredSeiTimecode": "DISABLED",
                  "GopSizeUnits": "FRAMES",
                  "ParControl": "SPECIFIED",
                  "NumberBFramesBetweenReferenceFrames": 3,
                  "TemporalIds": "DISABLED",
                  "SampleAdaptiveOffsetFilterMode": "ADAPTIVE"
                }
              },
              "AfdSignaling": "NONE",
              "DropFrameTimecode": "ENABLED",
              "RespondToAfd": "NONE",
              "ColorMetadata": "INSERT"
            },
            "AudioDescriptions": [
              {
                "AudioTypeControl": "FOLLOW_INPUT",
                "CodecSettings": {
                  "Codec": "AAC",
                  "AacSettings": {
                    "AudioDescriptionBroadcasterMix": "NORMAL",
                    "Bitrate": 160000,
                    "RateControlMode": "CBR",
                    "CodecProfile": "LC",
                    "CodingMode": "CODING_MODE_2_0",
                    "RawFormat": "NONE",
                    "SampleRate": 48000,
                    "Specification": "MPEG4"
                  }
                },
                "LanguageCodeControl": "FOLLOW_INPUT",
                "AudioType": 0
              }
            ],
            "Extension": "mp4",
            "NameModifier": "1280x720"
          }
        ],
        "OutputGroupSettings": {
          "Type": "FILE_GROUP_SETTINGS",
          "FileGroupSettings": {
            "Destination": "s3://amzn-s3-demo-bucket1/accelerated/"
          }
        }
      }
    ],
    "AdAvailOffset": 0,
    "Inputs": [
      {
        "InputClippings": [
          {
            "EndTimecode": "01:00:00:00",
            "StartTimecode": "00:00:00:00"
          }
        ],
        "AudioSelectors": {
          "Audio Selector 1": {
            "Offset": 0,
            "DefaultSelection": "DEFAULT",
            "ProgramSelection": 1
          }
        },
        "VideoSelector": {
          "ColorSpace": "FOLLOW"
        },
        "FilterEnable": "AUTO",
        "PsiControl": "USE_PSI",
        "FilterStrength": 0,
        "DeblockFilter": "DISABLED",
        "DenoiseFilter": "DISABLED",
        "TimecodeSource": "ZEROBASED",
        "FileInput": "s3://amzn-s3-demo-bucket/SampleVideo_h264_StereoAudio.mp4"
      }
    ]
  }
}
```