Fossiel Central Control v2

Every serious ComfyUI workflow eventually collapses under its own settings. You've got resolution here, frame count there, CFG buried in a KSampler, and a filename convention you can't remember. This node is the antidote: one hub that owns your resolution, video timing, sampling, and file naming for multi-clip video projects - and hands every value out on named outputs you wire into the rest of your graph.

It's the flagship of the Fossiel QoL pack, and the "v2" matters - it's a substantially expanded rewrite of the original Central Control with timing, sampling, and naming built in.

What it does

Central Control v2 is built around the multi-clip video workflow: you generate clip 1, then clip 2 starting a few overlapping frames into clip 1, and so on, to extend a sequence. Doing that by hand means recomputing frame indices, resolutions, and filenames every run. This node computes all of it from a handful of settings:

• Resolution. It keeps a manual width/height (pass-through) and a calculated resolution that matches your target aspect ratio, snaps to a multiple of Aspect_Tolerance (2/4/8/16/32/64 - lower is closer to your aspect, higher is friendlier to VAE math), and stays inside your maximum pixel budget. Feed it an optional image and its dimensions take over, and the batch size lands on the batch_count output. If the math ever bottoms out it defaults to 64×64 rather than erroring.
• Video timing. Video_Length snaps to 1 or 4k+1 frames (81 stays 81; 80 becomes 81). From length, overlap, frame rate, and Current_Generation it derives Start_Index/End_Index and their timings in seconds (Start_Time, End_Time, Vid_Duration, Overlap_Duration). First_Gen_Batch_Switch fires true only on generation 1, so you can treat the opening clip differently.
• Sampling. steps snaps to an even number and, with Dual_sampler_split_method and Step_split_ratio, splits into KSampler_1_End_Step and KSampler_2_Start_Step - for those two-pass or dual-KSampler setups. cfg, Sampler, and Scheduler pass through cleanly.
• Naming. Project_Name, Scene_Name, an optional Current Gen suffix, and a Delimiter combine into a clean File_Name (empty parts skipped, no double underscores) with the clip number on Gen_Num.

That's 23 named outputs, every one of them a plain value you can drop into an Empty Latent, a KSampler, a text box, or a save node.

Installing it

Manager search "ComfyUI-Fossiel-QoL-Nodes", or:

cd ComfyUI/custom_nodes
git clone https://github.com/Fossiel/ComfyUI-Fossiel-QoL-Nodes
pip install -r ComfyUI-Fossiel-QoL-Nodes/requirements.txt

Restart and find it under Fossiel/QoL. No model downloads; it's pure calculation.

The honest take

This node is genuinely good for the thing it's built for, and overkill for everything else. If you're a still-image person, the resolution math alone isn't worth the 21 other outputs. If you're doing long video projects - especially anything with overlapping context frames - it will replace a small constellation of primitives and make your filename mess disappear. It's a "personal use" node, which means it was tuned for the author's workflows: the 301-frame cap and 4k+1 snapping fit the video-model conventions of 2025–26, so don't fight the defaults until you've run a clip with them. Start with Lite if v2 feels like a cockpit; come back to this when you want the whole thing.