ComfyUI_FlipStreamViewer is a tool that provides a viewer interface for flipping images with frame interpolation, allowing you to watch high-fidelity pseudo-videos without needing AnimateDiff.

Required Custom Nodes

Please install the following nodes via ComfyUI-Manager:

ComfyUI Impact Pack
ComfyUI Frame Interpolation
ComfyUI WD 1.4 Tagger
FizzNodes
LoRA Tag Loader for ComfyUI

Getting Started

Navigate to the custom_nodes directory of ComfyUI. Run the following command to clone the repository:

git clone https://github.com/sakura1bgx/ComfyUI_FlipStreamViewer.git

Run ComfyUI and load the workflow.json file located in the workflows folder.
Access the viewer at the following URL if ComfyUI is running at http://localhost:8188:

http://localhost:8188/viewer

To respond to viewer input:

Check 'Extra options', 'Auto Queue', and 'instant' on the ComfyUI control panel.
Then click the 'Queue Prompt' button.

The 'preset' folder may be created in the current directory for saving and loading preset files. Sample presets can be found in the presetsamples folder.

Prompt Format

Use the following format for input prompts. The 'pre text' and 'append text' sections apply to all frames. The separator ---- should consist of four hyphens, and each line of 'frameN text' applies to individual frames.

pre text,
----
- frame1 text
- frame2 text
----
append text

Limitations

There is no save video function available; please customize your workflow as needed.
Excessively long text may cause exceptions.
The keywords BREAK, AND, and <lora:...> cannot be used in the prompt.

Parameters

You can adjust the following parameters on the viewer:

Seed: Random seed for KSampler.
Iv: Interval in seconds for auto-changing the random seed.
Nstp: Steps for KSampler.
Ncfg: CFG for KSampler.
Nsta: Start step for the second KSampler; increasing this value will stabilize the output between frames.
Nfrm: Number of frames; each frame undergoes x8 interpolation in the sample workflow.
Nspf: Seconds per frame displayed in the viewer stream.
Nwth: Threshold for WD14Tagger; A smaller value increases the level of detail.
Ncth: Character thresould for WD14Tagger

Inputs

Provide the following text inputs in the viewer:

Prompt Input: Located at the top of the left pane (refer to the Prompt Format section above).
Negative Prompt Input: Located below the Prompt Input; this applies to all frames.
LoRA Input: Located in the middle of the right pane; input LoRA such as <lora:startsfilename:1>.

Controls

Left Pane Buttons:

Update: Apply input data to the workflow.
Change: Change the seed and update.
K: Keep the seed to search for another good seed.
B: Go back to the previous seed.
M: Move the checkpoint file.
L: Load a preset.
P: Load a preset prompt only.
S: Save the current preset.
D: Delete a preset.

Right Pane Buttons:

T: Toggle LoRA enable/disable.
M: Move the LoRA file.
T: Toggle tag enable/disable at the Prompt Input.
R: Switch to random tags at the Prompt Input.
U: Same as Update.
W: Apply WD14Tagger to the first frame; outputs tags to LoRA input.
C: Capture an image from another browser tab or desktop and set it as the first frame; useful with W.

Additional Features

LoRA Preview: At the bottom of the right pane; click to jump to the Civitai LoRA page if found.
Auto-hide: Click to hide controls and images or the viewer auto-hides after 5 minutes of inactivity.

Quality and Speed

Use more higher-quality checkpoint models.
To enhance stability between frames, use a deliberate prompt in the 'pre text' to establish a consistent background, such as on desk, ideal background. Additionally, using LoRA can also improve stability.
Select the appropriate words in 'frameN text' to achieve the desired motion. This can be reused in other prompts.
Since 0sta is more flexible, it's better to change the Nsta only after testing those first.
Recommended speed setting: 4stp 1cfg 0sta dpmpp_2m,sgm_uniform with <lora:TCD-SDXL:1>. You can download the TCD LoRA from Civitai. Rename the file to TCD-SDXL.safetensors.

Customizing Workflow

You can customize the workflow for specific needs:

FlipStreamLoader: Use the 'mode' parameter to switch between sub-directories for checkpoints and LoRAs, useful for managing models like sd15, pony, etc.