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ausboss-ComfyUI-AusBoss/js/docs/AUSBOSS_NODES_SelectFrame.md
ausboss ac0bb08949 Help pages: say what the nodes do today
32 of the ? help pages checked against the code and corrected.

Wrong claims fixed: Stitch Inpaint's empty-area check (20/255), what a
new video keeps on both Video Crop + Rotate + Pad pages, Load Video's
frame picker and player height, where Run Timer lists earlier runs,
inpainting on the Krea 2 Outpaint Model Patch page, Workflow Note's
banner layout and pack detection, Image Resize's pad bars and mask,
Save Image's path preview and tags, Free Memory's steps, and Latent
Size's sockets.

Image Crop + Rotate + Pad now follows the node from top to bottom; the
saved values no row shows moved under Technical details.

Controls are named the way the node shows them, with the input name
beside. Pages that opened with jargon now open with what the node does
and when to use it. LoRA Loader gained the Civitai lookup, suggested
strength and the gear options it did not name.
2026-10-06 12:59:04 -05:00

1.6 KiB

Select Frame

Selects one unchanged image from an IMAGE batch. Frame numbers are one-based, so 1 is the first frame and the last valid value is the batch size. Negative numbers count from the end: -1 is the last frame, -2 the one before it — handy when the batch length varies, as a video's often does. 0 is invalid in both directions.

Controls

  • frames: A BHWC image batch, commonly the frame output of a video loader.
  • Frame (frame_number): The one-based frame to return; negative counts from the end (-1 is the last frame). An out-of-range value stops with the available range instead of silently clamping.

Output

  • image: The selected frame as a one-image BHWC batch.

Preview

The panel shows the frame that was selected, so a picked frame can be checked without a separate preview node. Before the first run it shows the picture or video feeding the node, not your chosen frame yet. It updates when the graph runs — changing Frame does not re-render it on its own, because the frame's pixels only exist on the server.

The node performs no network requests. It writes one preview PNG per run into ComfyUI's temp folder, the same place PreviewImage writes, which is cleared with the rest of the session's scratch files.

The small preview switch at the right of the bar above the picture turns it off: the picture's box disappears, the node is that much shorter, and no preview file is written. Turn it back on and the node returns to its height with the last result in it; if the node ran while the switch was off, it asks you to run the workflow again. The switch is the node's optional preview input.