Creates a sequence of hook keyframes with interpolated strength values between a start and end point. The node generates multiple keyframes that smoothly transition the strength parameter across a specified percentage range of the generation process, using various interpolation methods to control the transition curve.

## Inputs

| Parameter | Description | Data Type | Required | Range |
| --- | --- | --- | --- | --- |
| `strength_start` | The starting strength value for the interpolation sequence (default: 1.0) | FLOAT | Yes | 0.0 - 10.0 |
| `strength_end` | The ending strength value for the interpolation sequence (default: 1.0) | FLOAT | Yes | 0.0 - 10.0 |
| `interpolation` | The interpolation method used to transition between strength values (default: LINEAR) | COMBO | Yes | `LINEAR`<br>`EASE_IN`<br>`EASE_OUT`<br>`EASE_IN_OUT`<br>`EASE_OUT_IN`<br>`SINE`<br>`CUBIC`<br>`QUARTIC`<br>`QUINTIC`<br>`EXPO`<br>`CIRC`<br>`BACK`<br>`BOUNCE`<br>`ELASTIC` |
| `start_percent` | The starting percentage position in the generation process (default: 0.0) | FLOAT | Yes | 0.0 - 1.0 |
| `end_percent` | The ending percentage position in the generation process (default: 1.0) | FLOAT | Yes | 0.0 - 1.0 |
| `keyframes_count` | The number of keyframes to generate in the interpolation sequence (default: 5) | INT | Yes | 2 - 100 |
| `print_keyframes` | Whether to print generated keyframe information to the log (default: False) | BOOLEAN | Yes | True/False |
| `prev_hook_kf` | Optional previous hook keyframes group to append to | HOOK_KEYFRAMES | No | - |

## Outputs

| Output Name | Description | Data Type |
| --- | --- | --- |
| `HOOK_KF` | The generated hook keyframes group containing the interpolated sequence | HOOK_KEYFRAMES |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/CreateHookKeyframesInterpolated/en.md)

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