如何使用 Windows 脚本设置 Handbrake 默认预设

Question

您好，感谢阅读。

所以我使用的是 Handbrake（视频编码）GUI 版本（不是 CLI 版本）。

我有一个配置 GUI 版本设置的脚本。但我想指定默认预设。不幸的是，默认预设不在 settings.json 文件中。

默认预设存储在 presets.json 文件中。

presets.json 文件包含所有预设（例如 Very Fast 1080p30 和 Fast 720p30 等）。我想将 Fast 720p30 设置为默认预设。

所以我可以在 presets.json 中找到这个：

"PresetName": "Fast 720p30",

在上面，我看到了这个：

"Default": false,

那我也找这个：

"PresetName": "Fast 1080p30",

在上面我看到了这个：

"Default": true,

显然 'Fast 1080p30' 是当前的默认值。我想将其更改为 'Fast 720p30'.

要手动执行此操作，我需要将 'Fast 720p30' 的 'Default' 设置为 true，并将 'Fast 1080p30' 的 'Default' 设置为 false（或仅删除该行）。

如何使用脚本执行此操作？我正在使用 Windows 7 SP1，因此可以使用在 Windows 7 上运行的任何脚本语言（批处理、VBScript、PowerShell、JavaScript，甚至可能是 R 等）。

我的主要问题是我找不到访问任何给定预设的“"Default": false,”行的方法，因为 JSON 元素似乎没有名称。所以我想也许我需要找到“"PresetName": "Fast 720p30"”，然后找到上面的“"Default": false”并更改它，全部使用脚本。但我不知道该怎么做。

我无法在此处粘贴完整的 presets.json 文件，因为它有近 9000 行长。但这里是一个包含主要部分的编辑版本：

{
  "PresetList": [
    {
      "ChildrenArray": [
        {
          "AlignAVStart": true,
          "AudioCopyMask": [
            "copy:aac"
          ],
          "AudioEncoderFallback": "ac3",
          "AudioLanguageList": [],
          "AudioList": [
            {
              "AudioBitrate": 160
            }
          ],
          "AudioSecondaryEncoderMode": true,
          "AudioTrackSelectionBehavior": "first",
          "ChapterMarkers": true,
          "ChildrenArray": [],
          "Default": false,
          "PresetName": "Very Fast 1080p30",
          "Type": 0
        },
        {
          "AlignAVStart": true,
          "AudioCopyMask": [
            "copy:aac"
          ],
          "AudioEncoderFallback": "ac3",
          "AudioLanguageList": [],
          "AudioList": [
            {
              "AudioBitrate": 160
            }
          ],
          "Default": false,
          "PresetName": "Very Fast 720p30",
          "Type": 0
        },
        {
          "AlignAVStart": true,
          "AudioCopyMask": [
            "copy:aac"
          ],
          "AudioEncoderFallback": "ac3",
          "AudioLanguageList": [],
          "AudioList": [
            {
              "AudioBitrate": 160
            }
          ],
          "AudioSecondaryEncoderMode": true,
          "AudioTrackSelectionBehavior": "first",
          "ChapterMarkers": true,
          "ChildrenArray": [],
          "Default": false,
          "PresetName": "Very Fast 576p25",
          "Type": 0,
        },
        {
          "AlignAVStart": true,
          "AudioCopyMask": [
            "copy:aac",
            "copy:ac3",
            "copy:dtshd",
            "copy:dts",
            "copy:mp3",
            "copy:truehd",
            "copy:flac",
            "copy:eac3"
          ],
          "AudioEncoderFallback": "ac3",
          "AudioLanguageList": [],
          "AudioList": [
            {
              "AudioBitrate": 160,
              "AudioCompressionLevel": 0.0,
              "AudioDitherMethod": null,
              "AudioEncoder": "av_aac",
              "AudioMixdown": "stereo",
              "AudioNormalizeMixLevel": false,
              "AudioSamplerate": "auto",
              "AudioTrackQualityEnable": false,
              "AudioTrackQuality": -1.0,
              "AudioTrackGainSlider": 0.0,
              "AudioTrackDRCSlider": 0.0
            }
          ],
          "AudioSecondaryEncoderMode": true,
          "AudioTrackSelectionBehavior": "first",
          "ChapterMarkers": true,
          "ChildrenArray": [],
          "Default": false,
          "PresetName": "Very Fast 480p30",
          "Type": 0
        },
        {
          "AlignAVStart": true,
          "AudioCopyMask": [
            "copy:aac",
            "copy:ac3",
            "copy:dtshd",
            "copy:dts",
            "copy:mp3",
            "copy:truehd",
            "copy:flac",
            "copy:eac3"
          ],
          "AudioEncoderFallback": "ac3",
          "AudioLanguageList": [],
          "AudioList": [
            {
              "AudioBitrate": 160,
              "AudioCompressionLevel": 0.0,
              "AudioDitherMethod": null,
              "AudioEncoder": "av_aac",
              "AudioMixdown": "stereo",
              "AudioNormalizeMixLevel": false,
              "AudioSamplerate": "auto",
              "AudioTrackQualityEnable": false,
              "AudioTrackQuality": -1.0,
              "AudioTrackGainSlider": 0.0,
              "AudioTrackDRCSlider": 0.0
            }
          ],
          "AudioSecondaryEncoderMode": true,
          "AudioTrackSelectionBehavior": "first",
          "ChapterMarkers": true,
          "ChildrenArray": [],
          "Default": true,
          "PresetName": "Fast 1080p30",
          "Type": 0
        },
        {
          "AlignAVStart": true,
          "AudioCopyMask": [
            "copy:aac",
            "copy:ac3",
            "copy:dtshd",
            "copy:dts",
            "copy:mp3",
            "copy:truehd",
            "copy:flac",
            "copy:eac3"
          ],
          "AudioEncoderFallback": "ac3",
          "AudioLanguageList": [],
          "AudioList": [
            {
              "AudioBitrate": 160,
              "AudioCompressionLevel": 0.0,
              "AudioDitherMethod": null,
              "AudioEncoder": "av_aac",
              "AudioMixdown": "stereo",
              "AudioNormalizeMixLevel": false,
              "AudioSamplerate": "auto",
              "AudioTrackQualityEnable": false,
              "AudioTrackQuality": -1.0,
              "AudioTrackGainSlider": 0.0,
              "AudioTrackDRCSlider": 0.0
            }
          ],
          "AudioSecondaryEncoderMode": true,
          "AudioTrackSelectionBehavior": "first",
          "ChapterMarkers": true,
          "ChildrenArray": [],
          "Default": false,
          "PresetName": "Fast 720p30",
          "Type": 0
        }
      ],
      "Folder": true,
      "PresetName": "Production",
      "PresetDescription": null,
      "Type": 0
    }
  ],
  "VersionMajor": 40,
  "VersionMicro": 0,
  "VersionMinor": 0
}

非常感谢。

Answer 1

使用 PowerShell 和 JSON 并不难。

在这种情况下，您可以这样做：

$jsonPath = Join-Path -Path $env:APPDATA -ChildPath 'HandBrake\presets.json'
# load the file and convert from json to get an array of objects
$json = Get-Content -Path $jsonPath | ConvertFrom-Json
# look for the item where the PresetName property is 'Fast 1080p30' and set its Default property to $false
$json.PresetList.ChildrenArray | Where-Object { $_.PresetName -eq 'Fast 1080p30' } | ForEach-Object { $_.Default = $false }

# look for the item where the PresetName property is 'Fast 720p30' and set its Default property to $true
$json.PresetList.ChildrenArray | Where-Object { $_.PresetName -eq 'Fast 720p30' } | ForEach-Object { $_.Default = $true }

# next save the updated data as json file.
# for demo, I'm using a new name so the original file is not overwritten.
# if you have inspected the output file and all is correct, remove or comment out the next line:
$jsonPath = Join-Path -Path $env:APPDATA -ChildPath 'HandBrake\presets2.json'

$json | ConvertTo-Json -Depth 99 | Set-Content -Path $jsonPath

希望对您有所帮助

如何使用 Windows 脚本设置 Handbrake 默认预设

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