ComfyUI Node: 🔭 Linear Camera Zoom

Linear Camera Zoom [DVB]:

The Linear Camera Zoom [DVB] node is designed to create a smooth zoom effect in your video frames, either zooming in or out linearly over time. This node is particularly useful for AI artists looking to add dynamic camera movements to their animations or video projects. By specifying the direction of the zoom, you can control whether the camera moves closer to or further away from the subject, creating a sense of depth and motion. The node processes each frame in the sequence, adjusting the zoom level based on the specified parameters, ensuring a consistent and professional-looking result.

Linear Camera Zoom [DVB] Input Parameters:

frames

This parameter represents the set of video frames that will be processed by the node. It is essential as it provides the raw material for the zoom effect.

output_width

This integer parameter defines the width of the output frames after the zoom effect is applied. The default value is 512, with a minimum value of 1. Adjusting this parameter allows you to control the resolution of the output video.

output_height

This integer parameter defines the height of the output frames after the zoom effect is applied. The default value is 512, with a minimum value of 1. Similar to output_width, this parameter helps you set the desired resolution for the output video.

direction

This parameter determines the direction of the zoom effect. It can be set to either "in" or "out". Choosing "in" will make the camera zoom closer to the subject, while "out" will make it zoom away from the subject.

Linear Camera Zoom [DVB] Output Parameters:

frames

The output of this node is a set of video frames with the applied zoom effect. These frames will have the specified output width and height, and the zoom effect will be applied according to the chosen direction, creating a dynamic visual experience.

Linear Camera Zoom [DVB] Usage Tips:

• To create a dramatic zoom-in effect, set the direction to "in" and ensure your output width and height match your desired resolution.
• For a smooth zoom-out effect, set the direction to "out" and adjust the output dimensions to maintain the quality of your video.
• Experiment with different output resolutions to find the perfect balance between performance and visual quality.

Linear Camera Zoom [DVB] Common Errors and Solutions:

WARNING: Cannot pan - output larger than input!

• Explanation: This error occurs when the specified output dimensions are larger than the input frame dimensions, making it impossible to apply the zoom effect.
• Solution: Ensure that the output_width and output_height parameters are set to values equal to or smaller than the dimensions of the input frames.

WARNING: Cannot pan - no direction!

• Explanation: This error happens when the direction parameter is not set or is set to an invalid value.
• Solution: Make sure to set the direction parameter to either "in" or "out" to specify the desired zoom direction.