ExtendScript Coverage

Implementation progress of ExtendScript API attributes in aep_parser.

Each row lists the attributes from the After Effects Scripting Guide not yet implemented. Only attributes are counted - methods are excluded.

• ✅ = all attributes implemented
• 🚧 = partially implemented
• ❌ = class does not exist in aep_parser

General

Class	Status	Missing
Application	🚧	availableGPUAccelTypes, buildName, disableRendering, effects, exitAfterLaunchAndEval, exitCode, fonts, isoLanguage, isRenderEngine, isWatchFolder, memoryInUse, onError, preferences, saveProjectOnCrash, settings
System	❌	machineName, osName, osVersion, userName
Project	🚧	dirty, selection, toolType

Note: Most missing Application and System attributes reflect runtime state (memory usage, OS info, render engine mode) that is not stored in .aep files.

Items

Class	Status	Missing
Item	🚧	dynamicLinkGUID, guides, selected
AVItem	🚧	hasAudio, isMediaReplacementCompatible, proxySource, useProxy
CompItem	🚧	motionGraphicsTemplateControllerCount, motionGraphicsTemplateName, renderer, renderers, selectedLayers, selectedProperties
FolderItem	✅
FootageItem	✅

Layers

Class	Status	Missing
Layer	🚧	selectedProperties
AVLayer	🚧	audioActive, hasAudio
CameraLayer	✅
LightLayer	✅
TextLayer	✅
ShapeLayer	✅
ThreeDModelLayer	✅

Properties

Class	Status	Missing
PropertyBase	✅
PropertyGroup	✅
Property	🚧	alternateSource, canSetAlternateSource, canSetExpression, essentialPropertySource, selectedKeys, valueText
MaskPropertyGroup	✅

Render Queue

Class	Status	Missing
RenderQueue	🚧	canQueueInAME, queueNotify, rendering
RenderQueueItem	🚧	onStatusChanged
OutputModule	✅

Sources

Class	Status	Missing
FootageSource	🚧	displayFrameRate, nativeFrameRate, removePulldown
FileSource	✅
SolidSource	✅
PlaceholderSource	✅

Other

Class	Status	Missing
Shape	✅
KeyframeEase	✅
MarkerValue	✅
ImportOptions	❌	file, forceAlphabetical, importAs, rangeEnd, rangeStart, sequence
Viewer	✅
ViewOptions	✅
View	✅

Text

Class	Status	Missing
TextDocument	✅
FontObject	🚧	otherFontsWithSameDict
FontsObject	❌	allFonts, favoriteFontFamilyList, fontsDuplicateByPostScriptName, fontServerRevision, fontsWithDefaultDesignAxes, freezeSyncSubstitutedFonts, missingOrSubstitutedFonts, mruFontFamilyList, substitutedFontReplacementMatchPolicy
CharacterRange	❌	characterEnd, characterStart, fillColor, isRangeValid, kerning, strokeColor, strokeOverFill, text
ComposedLineRange	❌	characterEnd, characterStart, isRangeValid
ParagraphRange	❌	characterEnd, characterStart, isRangeValid

Note: FontsObject is a runtime collection, not stored in .aep files.