ComfyUI SS Before After Node

This repository provides two powerful custom nodes for ComfyUI to create stunning before-and-after transition videos. These nodes are designed for visual comparisons, transformations, and creative effects, supporting both standard and depth map-based transitions.

Features

• SSBeforeAndAfterVideo: Create videos with fade and wipe transitions between two images.
• SSBeforeAndAfterVideoWithDepthMap: Create depth-aware transitions using a depth map for more immersive effects.
• High-quality output with customizable resolution, frame rate, feathering, and looping.
• Automatic handling of output directories and filenames.
• Progress bar for frame generation.
• Robust ffmpeg integration for video encoding.

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Node 1: SSBeforeAndAfterVideo

Description

Creates before-and-after transition videos using classic fade and wipe effects. Ideal for showcasing transformations, comparisons, or visual storytelling.

Supported Transitions

• Fade: Smoothly blends from the before image to the after image.
• Wipe: Animated reveal from left, right, top, or bottom, with optional feathered (blurred) edge.

Parameters

• before_image: The starting image (tensor).
• after_image: The ending image (tensor).
• transition_type: Choose from fade, wipe_from_left, wipe_from_top, wipe_from_right, wipe_from_bottom.
• fps: Frames per second (1-120).
• width/height: Output video resolution (64-4096 px).
• output_path: Output directory (default /output/).
• filename_prefix: Prefix for output video files.
• transition_duration: Duration of the transition (0.5-10.0 seconds).
• hold_duration: Time to hold before and after images (0.0-5.0 seconds).
• feather: Feathering amount for wipe transitions (0.0-1.0).
• loop_transition: If enabled, the video will loop back to the start.

How It Works

1. Resizes both images to the specified resolution.
2. Generates frames for the hold, transition, and (optionally) loop-back phases.
3. Applies the selected transition (fade or wipe) with feathering.
4. Saves frames to a temporary directory.
5. Encodes video using ffmpeg.
6. Cleans up temporary files and returns the video path and a preview frame.

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Node 2: SSBeforeAndAfterVideoWithDepthMap

Description

Creates before-and-after transition videos using a depth map to control the transition. This enables advanced effects like revealing the after image from back-to-front, front-to-back, or from the middle outwards, based on scene depth.

Supported Transitions

• back_to_front: Reveals the after image starting from the farthest (background) regions.
• front_to_back: Reveals the after image starting from the closest (foreground) regions.
• middle_out: Reveals the after image from the center depth outward.

Parameters

• before_image: The starting image (tensor).
• after_image: The ending image (tensor).
• depth_map: Depth map image (tensor, same size as input images).
• transition_type: Choose from back_to_front, front_to_back, middle_out.
• fps: Frames per second (1-120).
• width/height: Output video resolution (64-4096 px).
• output_path: Output directory (default /output/).
• filename_prefix: Prefix for output video files.
• transition_duration: Duration of the transition (0.5-10.0 seconds).
• hold_duration: Time to hold before and after images (0.0-5.0 seconds).
• feather: Feathering amount for the depth mask (0.0-1.0).
• loop_transition: If enabled, the video will loop back to the start.
• easing_method: Transition easing ("none", "ease-in", "ease-out", "both").

How It Works

1. Resizes all images to the specified resolution.
2. Normalizes the depth map and creates a mask based on the selected transition type and progress.
3. Applies feathering to the mask for smooth transitions.
4. Blends images according to the mask for each frame.
5. Handles looping and hold frames as configured.
6. Encodes video using ffmpeg and cleans up temporary files.

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Installation

1. Place this folder in your ComfyUI/custom_nodes directory.
2. Install dependencies:

   pip install -r requirements.txt
   

3. Ensure ffmpeg is installed and available in your system PATH.

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Usage

1. Restart ComfyUI after installing the node.
2. Add the desired node (SSBeforeAndAfterVideo or SSBeforeAndAfterVideoWithDepthMap) to your workflow.
3. Configure the parameters as needed.
4. Run the workflow to generate your before-and-after transition video.
5. The output video and a preview frame will be saved to your specified output directory.

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Troubleshooting

• ffmpeg not found: Make sure ffmpeg is installed and accessible from your system PATH.
• Missing dependencies: Install all required Python packages listed in requirements.txt.
• Output not appearing: Check the output directory path and permissions.

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License

MIT License

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Credits

Developed by SamSeen. Inspired by creative visual storytelling needs in ComfyUI.

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Contribution

Pull requests and suggestions are welcome!