ComfyUI Node: H3 Latent Upscale - SatoDive

H3 Latent Upscale - SatoDive:

The SatoDiveH3LatentUpscale node is designed to spatially resize a one-frame H3 latent, specifically for video streams, while leaving audio streams untouched. This node is particularly useful for refining video latents with a low-denoise pass, enhancing the quality of the video output. By upscaling the latent representation of a video frame, it allows for a more detailed and higher-resolution output, which is crucial for achieving high-quality video results. The node supports various interpolation methods, providing flexibility in how the upscaling is performed, and is typically used in conjunction with a second sampler to achieve optimal results.

H3 Latent Upscale - SatoDive Input Parameters:

samples

This parameter represents the latent data that needs to be upscaled. It is crucial as it contains the video frame information that will be processed by the node. The latent data should be in a format that the node can interpret and manipulate.

scale

The scale parameter determines the factor by which the latent is upscaled. It directly impacts the resolution of the output video frame. The minimum value is 1.0, the maximum is 2.5, and the default is 1.5. Adjusting this value allows you to control the level of detail in the upscaled output, with higher values resulting in larger and potentially more detailed frames.

method

This parameter specifies the interpolation method used during the upscaling process. The available options are "bicubic," "bilinear," and "nearest-exact," with "bicubic" being the default. Each method offers a different approach to resizing, affecting the smoothness and quality of the final output. Choosing the right method can influence the visual quality of the upscaled video frame.

H3 Latent Upscale - SatoDive Output Parameters:

LATENT

The output is a resized latent representation of the video frame. This upscaled latent is crucial for further processing or rendering, as it provides a higher-resolution version of the original input, allowing for more detailed and visually appealing video outputs.

H3 Latent Upscale - SatoDive Usage Tips:

• Pair this node with a second sampler at a denoise level of approximately 0.4-0.5 to achieve optimal refinement of the upscaled latent.
• Experiment with different interpolation methods to find the best balance between processing speed and output quality for your specific use case.

H3 Latent Upscale - SatoDive Common Errors and Solutions:

"AttributeError: 'dict' object has no attribute 'is_nested'"

• Explanation: This error occurs when the input samples do not have the expected nested structure.
• Solution: Ensure that the input samples are correctly formatted and contain the necessary nested attributes before passing them to the node.

"ValueError: Expected a single-frame video latent"

• Explanation: This error arises when the input video latent contains more than one frame.
• Solution: Verify that the input latent is a single-frame video latent, as the node is designed to process only one frame at a time.