ComfyUI Node: Video Temperature V1

Video Temperature V1:

The VideoTemperatureV1 node is designed to apply dynamic temperature effects to video frames, enhancing the visual aesthetics by simulating various lighting conditions. This node allows you to choose from predefined temperature presets such as tungsten, daylight, and aging print, or define custom temperature settings. By adjusting the RGB color channels over time, it creates a visually appealing effect that can mimic the warmth or coolness of different lighting environments. The node is particularly useful for artists looking to add a cinematic touch to their videos, offering a simple yet powerful way to manipulate color tones and create mood-specific visuals.

Video Temperature V1 Input Parameters:

images

This parameter accepts a batch of images that represent the frames of a video. The node processes each frame individually to apply the temperature effect. The input should be in a format that the node can interpret as images, typically provided by the preceding node in the workflow.

temp_preset

This parameter allows you to select a temperature preset from a list of options: none, tungsten, daylight, aging_print, and custom. Each preset applies a different RGB multiplier to simulate various lighting conditions. The custom option lets you define your own RGB expressions for more personalized effects.

custom_r

When the custom preset is selected, this parameter allows you to specify a custom expression for the red channel multiplier. The default value is "1.0", meaning no change. You can use mathematical expressions involving the time parameter t to create dynamic effects.

custom_g

Similar to custom_r, this parameter is used to define a custom expression for the green channel multiplier when the custom preset is selected. The default value is "1.0", and it supports dynamic expressions based on the time parameter t.

custom_b

This parameter is used to specify a custom expression for the blue channel multiplier when using the custom preset. The default value is "1.0", allowing for dynamic adjustments using the time parameter t.

intensity

This parameter controls the strength of the temperature effect, with a default value of 1.0. It ranges from 0.0 (no effect) to 1.0 (full effect), allowing you to fine-tune the impact of the temperature adjustments on the video frames.

Video Temperature V1 Output Parameters:

IMAGE

The output is a batch of processed images, each with the temperature effect applied. This output maintains the same format as the input images, ensuring compatibility with subsequent nodes in the workflow. The processed images reflect the chosen temperature preset or custom settings, providing a visually enhanced video sequence.

Video Temperature V1 Usage Tips:

• Experiment with different temp_preset options to quickly achieve various lighting effects without needing to manually adjust RGB values.
• Use the intensity parameter to subtly blend the temperature effect with the original video, especially when aiming for a natural look.
• When using the custom preset, try simple mathematical expressions for custom_r, custom_g, and custom_b to create unique and dynamic color shifts over time.

Video Temperature V1 Common Errors and Solutions:

Invalid custom expression

• Explanation: This error occurs when the custom RGB expressions contain syntax errors or unsupported operations.
• Solution: Ensure that the expressions are valid mathematical formulas and only use supported operations and variables like t.

Unsupported image format

• Explanation: The node may not process images if they are in an unsupported format or not properly batched.
• Solution: Verify that the input images are in a compatible format and correctly batched as expected by the node.