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ausboss af12fec620 Correct node help pages that no longer match the nodes

Stitch Inpaint takes stitchers from five nodes, not one. Load Image +
Pad's reference is always built. Seed has no convert-to-input and no
"↺" button any more. LoRA templates live in the browser, and the absorb
section listed only some of the loaders it reads. Video Crop + Rotate +
Pad → Frame has four outputs and no resize. Frame Interpolate names the
RAFT file and folder, and the extras install with ComfyUI's Python.

2026-09-24 00:20:05 -05:00

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Frame Interpolate

Resamples a frame batch from one frame rate to another, so 24 -> 30 works as naturally as doubling. Every output frame maps to a position on the source timeline: positions that land exactly on a source frame are copied untouched, and only the true in-betweens are synthesized.

Methods

blend: A crossfade between the two neighboring frames. Instant and dependency-free, but fast motion looks soft because it averages instead of moving pixels.
optical flow: Estimates RAFT motion vectors in both directions, warps both neighbors toward the in-between time, and blends the warps. Much sharper on motion. It reads torchvision's official RAFT-small checkpoint, raft_small_C_T_V2-01064c6d.pth, from the torch hub cache (~/.cache/torch/hub/checkpoints/ unless TORCH_HOME moves it) and never downloads it during a run. Download it from https://download.pytorch.org/models/raft_small_C_T_V2-01064c6d.pth into that folder; without it the node names the exact path it looked in. Or use blend.

Scene cuts

Interpolating across a hard cut produces morph artifacts: two unrelated shots smeared into each other for a frame or two. When the mean absolute difference between adjacent source frames rises above scene_cut_threshold, the node treats that pair as a cut and holds the last frame before it instead of morphing. Set the threshold to 0 to disable detection and interpolate everything.

Controls

frames: Video frames as a BHWC IMAGE batch.
source_fps: Frame rate of the incoming batch; wire Load Video's fps output to match the source.
target_fps: Frame rate to resample to. Matching the source rate passes the batch through unchanged.
method: blend or optical flow as described above.
scene_cut_threshold: Cut sensitivity from 0 to 1; 0.35 suits most footage, 0 disables.
batch_size: In-between frames computed per batch. Higher is faster but uses more VRAM; results land in system memory as each batch finishes.

Outputs

frames: The resampled BHWC frame batch.
fps: The actual output rate. The output length is rounded to keep the clip duration, so this can differ slightly from the request on short clips; wire it into Save Video and the timing never drifts.

Neither method performs network requests or writes files. The optical-flow method reads an existing checkpoint from the local torch hub cache.

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