ComfyUI-PromptSegmentSelector

A tiny utility node that splits a single multiline prompt into up to 12 numbered STRING outputs using a user-defined delimiter. Useful for driving per-segment prompts in multi-shot or multi-segment video workflows (e.g. WAN 2.2 FLF SVI chains, multi-prompt animations) without maintaining 12 separate text nodes.

Install

Clone into your ComfyUI custom_nodes directory:

cd ComfyUI/custom_nodes
git clone https://github.com/BarleyFarmer/ComfyUI-PromptSegmentSelector

Restart ComfyUI. No dependencies beyond the Python stdlib.

Usage

Find the node under text/utility → Prompt Segment Selector.

Inputs:

• text (multiline STRING) — your combined prompt text.
• delimiter (STRING, default ---) — the string separating segments.

Outputs: segment_1 … segment_12 (STRING). Unused slots return "".

Example

Input text:

Wide establishing shot of a coastal village at dawn.
---
Medium shot of a fisherman pulling in nets.
---
Close-up of hands tying knots.

Yields:

• segment_1 = "Wide establishing shot of a coastal village at dawn."
• segment_2 = "Medium shot of a fisherman pulling in nets."
• segment_3 = "Close-up of hands tying knots."
• segment_4 … segment_12 = ""

Why ---?

ComfyUI normalizes whitespace inside multiline text widgets, so delimiters based on blank lines (\n\n) can silently fail. A distinct string like --- is reliable.

Behavior notes

• Leading and trailing whitespace is stripped from each segment.
• Empty middle segments are preserved so downstream indices stay aligned. For example, a---\n\n---c produces segment_1="a", segment_2="", segment_3="c".
• Trailing empty segments are trimmed.
• Inputs with more than 12 segments are truncated to 12, with a warning printed to the ComfyUI console.

License

MIT