Video Engine Routing
Published by frankxai in creator-skills
What this skill does
Decide WHERE video/image generation runs when cost, volume, or capability forces a choice - subscription credits vs pay-per-use APIs vs cloud ComfyUI. Use when asked "which video engine should I use", "is Higgsfield/fal/RunComfy worth it", "credits ran out", "cheapest way to generate N clips", "do I need ComfyUI", "should I run this locally", or when the video-gen skill escalates a budget or capability ceiling. Contains the pricing table, graduation triggers, and the never-local rule for iGPU ma
Add Video Engine Routing to your agent
Review the source and files first. When you are ready, copy the prompt instruction or use the CLI command supported by your environment.
Install with a prompt
Paste this into a compatible coding agent:
add this skill "video-engine-routing" from https://github.com/frankxai/creator-skillsInstall with the CLI
Run this command in a controlled environment after reviewing the repository:
npx skills add https://github.com/frankxai/creator-skills --skill video-engine-routingSkill instructions
video-engine-routing — when you outgrow your default engine
The default stack (see video-gen) assumes a subscription engine. This skill is the
escalation path: what to do when credits run out, volume grows, or the pipeline needs
control the subscription engine cannot give.
The decision tree
- Under ~50 clips/month, mixed styles, no custom pipeline → stay on the subscription engine (Higgsfield or equivalent). Sunk cost, routing across many models, zero ops.
- Bursty overflow or budget clips at volume → pay-per-use API (fal.ai). No subscription, no credit expiry, cheapest per-clip for budget models.
- Custom pipeline: LoRA character consistency at batch scale, ControlNet/IPAdapter chains, motion transfer, community models → cloud ComfyUI (RunComfy machines or Comfy Cloud). You are paying for control, not per-clip price.
- Local GPU rendering → only with a recent NVIDIA card with 16 GB+ VRAM. On an iGPU machine (Intel Arc/AMD APU, shared memory): never. Modern video models blow through shared-memory budgets, and quantized variants degrade video coherence. Cloud is faster and cheaper than wasted local hours.
Pricing reference (mid-2026, one 5-second 1080p clip)
| Route | Cost per 5s clip | Notes |
|---|---|---|
| Higgsfield subscription | ~$0.30–0.50 in credits | tiers $15–129/mo; credits don't roll over |
| fal.ai — Seedance 2.0 Fast | ~$0.11 | cheapest respectable social clip |
| fal.ai — Kling | ~$0.35 | pay-per-second, no minimums |
| fal.ai — Veo 3.1 Fast | ~$0.50 (720p) | 4K tier ~3× |
| RunComfy machines | $0.99–9.59/hr + Pro $20/mo | custom ComfyUI workflows; cold-start overhead makes single clips uneconomic |
| Comfy Cloud | $20/mo ≈ 180 GPU-min | official ComfyUI cloud, credit-based |
| ComfyDeploy | — | defunct; stack was open-sourced, managed service gone |
Recompute before deciding: prices move quarterly. The structure (subscription vs per-use vs machine-rental) is what stays stable.
Graduation triggers
- To fal.ai: monthly credit top-ups exceed ~$20 two months running, or you need one premium model your subscription lacks.
- To cloud ComfyUI: you need the same character across 10+ videos via LoRA, or a ControlNet/IPAdapter/motion-control chain no API engine exposes, or 100+ clips/month of one repeatable workflow where machine-hours beat per-clip pricing.
- Back down: if a rented workflow runs less than monthly, cancel the machine and take the per-use price. Idle infrastructure is the most expensive engine.
What not to do
- Don't install vendor API-wrapper skill packs for engines you don't pay for — every one of them is lock-in to that vendor's endpoint with no portable workflow definition.
- Don't run modern video models on integrated GPUs (see rule 4 above).
- Don't hold two overlapping subscriptions to hedge; pick one default and use per-use APIs as the hedge.
Credits
The single-dispatcher/model-leaf routing pattern used by video-gen is adapted from the
router design in agentspace-so's RunComfy skill pack — pattern absorbed, dependency skipped.
Disclosure: I am a Higgsfield Ambassador; Higgsfield links on my site may be affiliate links. This skill's routing logic does not depend on that relationship — the decision tree sends you to fal.ai or ComfyUI whenever those genuinely win.
Files included
- SKILL.md