H3 Continuous - Output / Stitch (Legacy v1.0)

Every H3 clip in a continuation chain needs to come out in one of two flavors, and getting them mixed up is the fastest way to ruin a stitch. H3ContinuousStitchOutputV1 is the node that decides, and the decision is the whole job: Full or Stitch Ready.

• Full is a true bypass - you get the complete render, exactly as sampled. Use it when you want to inspect a clip or when it's genuinely the final output with its full landing intact.
• Stitch Ready is the secret sauce. It removes the reused head context (that's the duplicated history a Continue node carried into clip 2+, defaulting to head_context_frames) and trims the tail after this clip's exact phase-aligned latent handover boundary - the frozen FL2VA landing the Auto Handover analyzer marked as dead. What's left is a clip whose end lines up frame-exactly with where the next clip's carried context begins. That's what makes direct concatenation possible without double motion or a frozen tail bleeding into the next segment.

So the workflow rule is simple: every intermediate clip is Stitch Ready; the final clip of the project is Full (or Stitch Ready if you want the safety trim applied to the very end - the author documents that choice explicitly in the newer versions).

Inputs and outputs

Required: images (the decoded full render) and output_mode. Optional: handover - connect the Auto Handover analyzer's output; required for Stitch Ready so the tail trim matches the exact latent cutoff; audio (the decoded audio, passed through and trimmed in step); head_context_frames - leave unconnected (0) for Clip 1, connect actual_head_context_frames from the Continue node for Clip 2+.

Outputs: images, audio, trim_info (a string explaining what was cut), and the two ints that tell you exactly what happened: head_trim_frames and tail_trim_frames. Those two numbers are your sanity check - if Stitch Ready trimmed zero tail frames, your handover input probably wasn't connected.

Install

cd ComfyUI/custom_nodes
git clone https://github.com/HerrgottMargott/Herrgotts-H3-Infinite-Continuation-Suite.git

Restart ComfyUI, reload. No pip deps, no bundled weights - H3 models/VAEs from Comfy-Org's MiniMax-H3 repo.

Gotchas

This is the v1.0 class, and it's the parent of the v1.2/v1.4 Stitch nodes - the newer ones add a Final Clip mode and v1.4's shared-boundary geometry. If you're on an old v1.0 chain, remember the handover is required for Stitch Ready to mean anything; without it, the node has no idea where the dead tail starts and will trim by guesswork. And never feed the Stitch Ready output back into the next Continue's previous_latent - continuation needs the full latent, not the trimmed render.