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Record PlayMode keyboard and mouse input to JSON. Use to capture gameplay, bug repro, or E2E input sequences for replay.
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| name | uloop-record-input |
| toolName | record-input |
| description | Record PlayMode keyboard and mouse input to JSON. Use to capture gameplay, bug repro, or E2E input sequences for replay. |
Record keyboard and mouse input during PlayMode frame-by-frame into a JSON file. Captures key presses, mouse movement, clicks, and scroll events via Input System device state diffing.
# Start recording
uloop record-input --action Start
# Start recording with key filter
uloop record-input --action Start --keys "W,A,S,D,Space"
# Stop recording and save
uloop record-input --action Stop
# Stop and save to specific path
uloop record-input --action Stop --output-path scripts/my-play.json
| Parameter | Type | Default | Description |
|---|---|---|---|
--action | enum | Start | Start - begin recording, Stop - stop and save |
--output-path | string | auto | Save path. Auto-generates under .uloop/outputs/InputRecordings/ |
--keys | string | "" | Comma-separated key filter. Empty = all common game keys |
Replay injects input frame-by-frame, so the game must also be deterministic to produce identical results. If the recording will be used for E2E tests, bug reproduction, or replay verification, read references/deterministic-replay.md before designing assertions or game logic.
com.unity.inputsystem) must be installed; this tool only works with the New Input System.The CLI prints JSON with:
Success: Whether the operation succeededMessage: Status messageAction: Echoes which action was executed (Start or Stop)OutputPath: Path to saved recording (nullable; populated on Stop only)TotalFrames: Number of frames recorded (nullable int; populated on Stop only)DurationSeconds: Recording duration in seconds (nullable float; populated on Stop only)Frame data lives only in the JSON file at OutputPath; internal metadata fields are not included in the response.