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# Keyframe Analysis

Keyframe analysis identifies key frames in video. A key frame is a frame in which the scene changes significantly from the previous frame.

Configuration Parameter | Description
--- | ---
ForceAfter | The maximum time interval between keyframes.
FrameRate | (Deprecated) The number of frames to analyze per second of video.
Input | The image track to process.
KeyAtLeastSec | (Deprecated) The maximum interval between keyframes.
KeyAtMostSec | (Deprecated) The minimum interval between keyframes.
QuietPeriod | The minimum time interval between keyframes.
SampleInterval | The interval at which frames are selected to be analyzed, in milliseconds.
Sensitivity | The sensitivity level for detecting scene changes.
Type | The analysis engine to use. Set this parameter to `Keyframe`.

## Output Tracks

Output track | Type | Description | Output1This column indicates whether the information contained in the track is included by default in the output created by an output task (when you don't set the Input parameter for the output task).
--- | --- | --- | ---
`Result` | KeyFrameData | The input image track filtered to contain only UUIDs for records corresponding to key frames. | Yes
`ResultWithSource` | KeyFrameDataAndImage | Contains the same information as the `Result` track, but also includes an image for each key frame. | No

KeyFrameData

Field name | Type | Description
--- | --- | ---
id | UUIDData | A universally unique identifier to identify the scene change event.

KeyFrameDataAndImage

Field name | Type | Description
--- | --- | ---
id | UUIDData | A universally unique identifier to identify the scene change event.
image | ImageData | The keyframe image.

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