H3_Keyframes.json

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A weathered steel A-frame swing set with two rubber seats on chains stands on patchy mown grass, its paint faded and rust showing at the joints. Tall unmown weeds run along a wire fence at the property line, dark trees behind it, a pale blue sky streaked with pink and orange sunset cloud above. Warm fading daylight, long soft shadows, no people in frame. Quiet outdoor room tone, crickets, a dog barking far off.",544,960,243,"0, 0.5, 1"]},{"id":10,"type":"BasicGuider","pos":[1310.6563039723655,421.3816925734024],"size":[300,78],"flags":{},"order":13,"mode":0,"inputs":[{"localized_name":"model","name":"model","type":"MODEL","link":7},{"localized_name":"conditioning","name":"conditioning","type":"CONDITIONING","link":8}],"outputs":[{"localized_name":"GUIDER","name":"GUIDER","type":"GUIDER","slot_index":0,"links":[11]}],"properties":{"cnr_id":"comfy-core","ver":"0.30.0","Node name for S&R":"BasicGuider"},"widgets_values":[]},{"id":11,"type":"KSamplerSelect","pos":[1310.6563039723655,141.3816925734024],"size":[300,82],"flags":{},"order":4,"mode":0,"inputs":[{"localized_name":"sampler_name","name":"sampler_name","type":"COMBO","widget":{"name":"sampler_name"},"link":null}],"outputs":[{"localized_name":"SAMPLER","name":"SAMPLER","type":"SAMPLER","slot_index":0,"links":[12]}],"properties":{"cnr_id":"comfy-core","ver":"0.30.0","Node name for 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S&R":"MarkdownNote"},"widgets_values":["## Keyframes at any position\n\nStock ComfyUI pins H3 keyframes to the **first and last frame only**. This\ngraph places as many as you like, anywhere.\n\n**How to use it**\n1. Connect one image per anchor to `image_1 .. image_6`.\n2. Give one position per image in `positions`, same order.\n   * `0` = first frame, `0.5` = halfway, `1` = last frame\n   * a value **above 1** is an absolute frame index (`121`)\n   * `0, 0.5, 1` = start, middle, end\n3. Everything else is a normal H3 render.\n\n### It MOVES or it CUTS - and your images decide which\n\nGive it images with a plausible path between them (same place, different angle\nor framing) and H3 **interpolates**: a real move that arrives on time. Measured\non a 243-frame render with one anchor at frame 121, the closest frame to the\nanchor image was frame **122** - off by one - with no cut anywhere (peak\nframe-to-frame change 2.3x median).\n\nGive it images with **no** possible path (a kitchen and a diner) and H3 **cuts**,\nthen holds. That is not a bug and not a limit of this node: stock first/last\ndoes exactly the same with such a pair. It is the model doing the only sensible\nthing.\n\nBoth behaviours are useful. The second gives you a **timed shot change inside a\nsingle generation** - and because it is one generation, the audio runs unbroken\nstraight through the cut, with no voice re-derivation and no seam.\n\n### Notes\n* `positions` must have exactly one entry per connected image, or it errors.\n* Two anchors cannot land on the same frame.\n* Anchors are sorted for you; wiring order does not matter.\n* Frames follow H3's 17k+5 grid: 243 = ~10.1s, 362 = trained max ~15.1s.\n* **Anchor strength** (the optional node) exposes a core setting nothing else\n  reaches. 1.0 feeds anchors in pristine; lower lets the model drift further\n  from them. Leave it at 0.999 unless anchors feel too rigid.\n"],"color":"#432","bgcolor":"#653"}],"links":[[1,2,0,8,0,"CLIP"],[2,3,0,8,1,"VAE"],[3,5,0,8,2,"IMAGE"],[4,6,0,8,3,"IMAGE"],[5,7,0,8,4,"IMAGE"],[6,8,0,9,0,"CONDITIONING"],[7,1,0,10,0,"MODEL"],[8,9,0,10,1,"CONDITIONING"],[9,1,0,12,0,"MODEL"],[10,13,0,14,0,"NOISE"],[11,10,0,14,1,"GUIDER"],[12,11,0,14,2,"SAMPLER"],[13,12,0,14,3,"SIGMAS"],[14,8,1,14,4,"LATENT"],[15,14,0,15,0,"LATENT"],[16,3,0,15,1,"VAE"],[17,14,0,16,0,"LATENT"],[18,4,0,16,1,"VAE"],[19,15,0,17,0,"IMAGE"],[20,16,0,17,1,"AUDIO"],[21,17,0,18,0,"VIDEO"]],"groups":[{"id":1,"title":"Models","bounding":[53.22970639032815,-66,380,528],"color":"#3f789e","flags":{}},{"id":2,"title":"Keyframes","bounding":[440,-66,371.77892918825546,1166.1450777202072],"color":"#3f789e","flags":{}},{"id":3,"title":"Conditioning","bounding":[820,-66,460,644],"color":"#3f789e","flags":{}},{"id":4,"title":"Sampling","bounding":[1290.6563039723655,-64.61830742659758,380,796],"color":"#3f789e","flags":{}},{"id":5,"title":"Output","bounding":[1677.1675302245237,-64.61830742659758,371.7098445595859,792.1623488773746],"color":"#3f789e","flags":{}}],"config":{},"extra":{"ds":{"scale":0.7237500000000002,"offset":[249.66328151986121,472.4326079447307]}},"version":0.4}