Stitch Inpaint 🆎

If Crop For Inpaint 🆎 is the front half of the crop-and-stitch pattern, Stitch Inpaint 🆎 is the payoff. It takes the inpainted crop, pastes it back into the original image, and - this is the whole point - every pixel outside the blend region comes back bit-identical. Those pixels never pass through a resize, never touch a VAE, never even get re-encoded. What was there is what remains, to the byte.

That's a stronger guarantee than the older ImageCompositeMasked approach, and it's why the crop-and-stitch pattern beat it. The knowledge base puts it plainly: compositing after inpainting went from a discipline you had to remember to a property of the graph itself.

What it takes in

Two required inputs, and that's basically it:

• stitcher - from Crop For Inpaint's stitcher output. It carries the canvas, the rectangle the crop came from, the feathered blend mask, and the scale.
• inpainted - the crop your sampler produced. If the sampler changed its size, the node resizes it back to the crop window before pasting.

One output: image, the original-size result with the inpainted crop blended in. A stitcher built from a single image broadcasts across a whole inpainted frame batch, so the one-crop-serves-a-clip trick from the crop node pays off here - paste a whole video back in one node.

The one optional flag that matters

fix_edge_halo (default off) is aimed at the rim that appears when a feathered seam gets blended twice: half-transparent edge pixels blend their background in twice and leave a dark or light line. When enabled, the node recovers the true color under the seam before pasting. The catch: it needs the optional pymatting package. Without it, the node notes it once in the console and pastes unchanged - no crash, just no halo fix. If you're seeing rims on feathered seams, that's the knob, and you'll want:

cd ComfyUI/custom_nodes/ComfyUI-AusBoss
pip install pymatting

Install

cd ComfyUI/custom_nodes
git clone https://github.com/ausboss/ComfyUI-AusBoss.git

Restart ComfyUI and search for AusBoss (also in Manager under ComfyUI-AusBoss). The pack core has no extra dependencies beyond what ComfyUI ships; only the halo fix wants pymatting. Minimum ComfyUI 0.27.1.

Troubleshooting

A hard seam when you expected a blend means blend_pixels on the crop node was 0 - the stitcher records that paste mask, so check the crop side, not this node. A visible halo with feathering on means either fix_edge_halo is off, or it's on but pymatting isn't installed (check the console for the one-time note). And if the pasted region looks shifted, the stitcher and the inpainted crop came from different graphs - re-run the crop side, or at least don't mix stitchers between branches.