VRGDG_PromptSplitterForFL

VRGDG_PromptSplitterForFL is the index-based member of VRGameDevGirl's splitter family - the acronym isn't documented anywhere in the README, so treat "FL" as a workflow-internal label for whatever section this variant anchors. Unlike the fixed-count splitters that dump every scene at once, this one takes a JSON prompt map and an index, and hands you the sixteen text outputs for the scene at that index.

That single change - an index input - makes it fundamentally different from the rest of the family. It's not "give me all scenes"; it's "give me this scene, and let my workflow loop the index." It pairs naturally with stateful steppers like the pack's VRGDG_PostRunIndexStepper, which ticks the index up after each render so the FLUX pass marches through the prompt map one scene at a time.

How it works

Two required inputs:

• json_string - the prompt-map JSON as text (defaults to {}). This is the same scene-prompt structure the rest of the pack produces.
• index - which scene to pull, 0 to 10000. Scene 0, scene 1, etc. Wire this from your index-stepper or seed node, or set it by hand to preview one scene.

Outputs: text_output_1 through text_output_16 - sixteen STRING ports. Why sixteen for one scene? Because one scene isn't one prompt in this workflow - it's a batch of related generation parameters (positive prompt, negative, style, camera notes, whatever the FLUX section consumes), and the node unpacks the selected scene's entry across all sixteen slots. The exact field meanings aren't documented beyond the ports themselves, so treat them as "whatever the workflow section expects in that slot."

Where it fits

You'll see this in the part of the workflow that generates one video chunk per scene with a FLUX base image. The flow is: prompt map → subject prepender → this splitter (index-fed) → video node. Every run of the loop renders one scene, the stepper advances, and the next run pulls the next scene. If you've ever hand-copied a prompt between runs, this is the node that ends that.

Installing it

With the pack:

cd ComfyUI/custom_nodes
git clone https://github.com/vrgamegirl19/comfyui-vrgamedevgirl

restart, or ComfyUI Manager → search vrgamedev. No model downloads; it's a JSON-to-text transform.

Gotchas

The index is zero-based, so scene 1 of your song is index: 0 - the classic off-by-one that shows up as "my first scene is the second scene." And if you wire the index stepper into it, remember the stepper only advances after a full run; previewing one scene with a manual index and then forgetting to reset it will make your video skip that scene.