# Singularity R91 for ComfyUI

Singularity is a public-alpha ComfyUI custom node for Wan I2V / V2V cascade continuation.

It is built for users who want longer Wan videos without manually extracting a last frame, loading it again, making another short clip, and stitching everything later.

## What It Does

Singularity turns this manual loop:

```text

generate a short clip

find a good tail frame

load that frame as the next source

generate the next clip

repeat

stitch everything later

```

into one controlled node workflow:

```text

generate

pause

choose a tail frame

continue the same run

save one stitched final video

```

## Main Features

- One visible ComfyUI node: Singularity.

- Wan I2V / V2V cascade continuation.

- Up to five cascade segments in this public alpha.

- Optional pause after cascade 1, 2, 3, and 4.

- Detached Source / Tail 1 / Tail 2 / Tail 3 / Result panel under the node.

- Manual tail-frame selection before continuation.

- Same-run resume instead of unrelated separate renders.

- Final stitched video output.

- Markdown report output with cascade, motion, runtime, delta, and Strategy diagnostics.

- Clean public defaults: no bundled image, empty positive prompt, built-in Wan-style Chinese negative prompt.

- Native ComfyUI image upload button is preserved.

## New In R91

R91 is a stabilization update for modern ComfyUI Desktop.

- Visible title now shows Singularity R91.

- The public node surface is clean for fresh installs.

- The math_control_mode dropdown now shows only the clean public modes.

- Older saved workflow values are still normalized by the backend.

- Pause/continue UI remains detached below the node.

- The native upload button is preserved.

- Strategy Control Surface diagnostics are included in reports.

- Experimental math remains neutral by default.

## About The Math

Singularity studies generation as an event:

```text

Outcome(t-1) + ObservedBehavior(t-1)

= Strategy(t)

= ObservedBehavior(t+1) + Outcome(t+1)

```

For normal users, this means the node helps you inspect whether the source image, prompt meaning, model behavior, sampler route, motion, and final video are staying connected.

This is not a magic quality button. It is a control and diagnostics layer.

Use OBSERVE_ONLY for a safe baseline.

Use STRATEGY_PRESSURE_WINDOW only when you intentionally want to test bounded experimental math. With high_delta_strength = 1.0 and low_delta_strength = 1.0, it stays neutral.

Use LATENT_DELTA_SCALE and DEEP_STEP_DELTA_CONTROL only for research.

## Recommended First Test

```text

cascade_count = 2

pause_after_cascade_1 = true

frames_per_cascade = 49

width = 704

height = 1280

fps = 16

seed = 123

math_control_mode = OBSERVE_ONLY

high_delta_strength = 1.0

low_delta_strength = 1.0

save_video = true

save_report = true

```

Pick a source image, write a clear prompt, generate, choose a tail frame when the panel appears, continue, then inspect the final stitched video and report.

## Public Alpha Notes

- Models are not included.

- This is Wan-first.

- Heavy resolutions require more VRAM and time.

- CompletionGate = PASS means the route completed and a final video exists. It does not guarantee perfect visual quality.

- Always inspect the final video, not only the report.