ComfyUI Node
H3 Temporal Sampler
This node is optimized for increasing output size (up to 2K), but it can also be used for longer videos — working around VRAM limits at the cost of longer render times.
H3 Temporal Sampler
- noise
- guider
- sampler
- sigmas
- latent_image
- output
- denoised_output
◄Enabletrue►
◄Num Segments4►
◄Smart Boundsfalse►
◄Overlap Frames5►
◄Blend Modemultiband►
◄Seam Locktrue►
◄Seam Lock Frames2►
Categoryh3 temporal sampler
Inputs (12)
| Name | Type | Default | Description |
|---|---|---|---|
| Enable | BOOLEAN | true | ON: tiled sampling with overlap blending. OFF: one plain pass over the full latent, like SamplerCustomAdvanced. |
| noise | NOISE | Full-length noise field; sliced per segment so overlaps share identical initial noise. | |
| guider | GUIDER | Conditioning guider (prompt + reference). Applied identically to every segment. | |
| sampler | SAMPLER | Sampler algorithm used for every segment. | |
| sigmas | SIGMAS | Sigma schedule; identical for every segment so the tiles match. | |
| latent_image | LATENT | Full-length H3 AV latent to denoise in tiled segments. | |
| Num Segments | INT | 41–10 | How many overlapping time segments the latent is split into. |
| Smart Bounds | BOOLEAN | false | ON: place segment boundaries at motion valleys (low-motion points) instead of even spacing. Falls back to even spacing if infeasible. |
| Overlap Frames | INT | 55–20 | Overlap between neighbours, snapped to multiples of 5 latent frames. Larger = smoother joins, more compute. |
| Blend Mode | COMBO | multiband | Join style for the final assembly: linear (straight ramp) / adaptive (rushes through disagreeing frames) / multiband (fine detail blended narrowly, best for fine textures). |
| Seam Lock | BOOLEAN | true | ON: pin each segment's leading frame(s) to the merged timeline (seam lock via denoise mask). OFF: pure crossfade blending. |
| Seam Lock Frames | INT | 21–4 | How many leading frames of each segment are pinned (1 = hard single-frame lock; 2-4 = tapered lock releasing gradually). Clamped to the overlap. |
Outputs (2)
| Name | Type | Description |
|---|---|---|
| output | LATENT | — |
| denoised_output | LATENT | — |