---
title: Standard Protocol Input Keys
framework: quartz
role: collectionGroup
role_heading: API Collection
path: quartz/standard-protocol-input-keys
---

# Standard Protocol Input Keys

Input ports of a composition.

## Topics

### Constants

- [QCCompositionInputImageKey](quartz/qccompositioninputimagekey.md)
- [QCCompositionInputSourceImageKey](quartz/qccompositioninputsourceimagekey.md)
- [QCCompositionInputDestinationImageKey](quartz/qccompositioninputdestinationimagekey.md)
- [QCCompositionInputRSSFeedURLKey](quartz/qccompositioninputrssfeedurlkey.md)
- [QCCompositionInputRSSArticleDurationKey](quartz/qccompositioninputrssarticledurationkey.md)
- [QCCompositionInputPreviewModeKey](quartz/qccompositioninputpreviewmodekey.md)
- [QCCompositionInputXKey](quartz/qccompositioninputxkey.md)
- [QCCompositionInputYKey](quartz/qccompositioninputykey.md)
- [QCCompositionInputScreenImageKey](quartz/qccompositioninputscreenimagekey.md)
- [QCCompositionInputAudioPeakKey](quartz/qccompositioninputaudiopeakkey.md)
- [QCCompositionInputAudioSpectrumKey](quartz/qccompositioninputaudiospectrumkey.md)
- [QCCompositionInputTrackPositionKey](quartz/qccompositioninputtrackpositionkey.md)
- [QCCompositionInputTrackInfoKey](quartz/qccompositioninputtrackinfokey.md)
- [QCCompositionInputTrackSignalKey](quartz/qccompositioninputtracksignalkey.md)
- [QCCompositionInputPrimaryColorKey](quartz/qccompositioninputprimarycolorkey.md)
- [QCCompositionInputSecondaryColorKey](quartz/qccompositioninputsecondarycolorkey.md)
- [QCCompositionInputPaceKey](quartz/qccompositioninputpacekey.md)

## See Also

### Constants

- [Attribute Keys](quartz/attribute-keys.md)
- [Composition Categories](quartz/composition-categories.md)
- [Standard Protocol Output Keys](quartz/standard-protocol-output-keys.md)
- [Standard Protocols](quartz/standard-protocols.md)