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ComfyUI-SequentialImageLoader Offers Painless Frame-by-Frame Folder Processing

By vramkickedin | | 2 min read
Close up object of a film frame with a playhead slider with a playhead slider is made up of a digital wireframe.

Load images one frame at a time

ComfyUI-SequentialImageLoader is a custom node that loads images from a folder one by one in order, advancing to the next file every time you press Queue. It remembers its position between runs so you can process frames or photos at your own pace without rewiring anything. The node shows a live status line, thumbnail previews of upcoming images, and includes a scrub bar for jumping anywhere in a long sequence.

Developer Shootthesound who also created Fizgig built this loader as a simpler alternative to complex batch tools or the manual hassle of swapping files between runs. Instead of loading everything into VRAM at once, the node hands back a single image per Queue and steps forward automatically. It fills the gap between tedious single-load workflows and all-at-once batch processors.

A friendly loader for everyday use

Features at a glance
  • Steady one-image-per-queue folder processing.
  • Built-in folder picker on the server.
  • Natural sort order for file names.
  • Draggable scrub bar to jump anywhere.
  • Thumbnail previews of next two images.
  • Hold mode to freeze on one frame.
  • Rescan folder after adding or removing files.
  • Reverse sequence and subfolder scanning options.

Anyone who processes folders of frames or photos through ComfyUI can pick this up quickly. The hold and reset controls let you lock onto a single image while you adjust settings, then resume the sequence exactly where you left off. Thumbnail previews show what is coming up before you even queue the next run.

What the developer says about limits

The position is saved as widget state inside your workflow JSON, so reopening a graph picks up where you left off, but headless tools start from whatever index was stored. Changing the filetype mid-run keeps the same index number, meaning you might want to hit Reset after switching to avoid wrapping issues. The loader deliberately sticks to one image per Queue rather than trying to be a batch processing node.

"There are lots of great but akward sequential image loader nodes. Tied to make one that's a little more friendly for everyday use." — Source: Reddit

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