⭐ Star LTX Image Cut

Anyone who's run LTX-Video long enough knows the drill: the output starts with a couple of mush frames while the model settles in, ends with another couple as it fades out, and your "10 second" clip is really 9 seconds of usable footage plus a thumbnail's worth of garbage. Star LTX Image Cut is the StarNodes node that trims those frames off a frame batch - and conveniently also hands you the first, last and a specific frame while it's at it.

It's in ⭐StarNodes/Video and works on the IMAGE-type frame batches that video decoders and the pack's LTXV all-in-one nodes output.

How it works

Three integer inputs slice the batch:

• cut_first_frames (default 0) - how many frames to drop off the front.
• cut_last_frames (default 10) - how many to drop off the back. The author's default of 10 reflects the real-world observation that LTX tails are the worst part, though you'll want to tune it to your own generation.
• export_frame_number (default 0) - which frame to pull out as a single selected_frame output (0-indexed, so 0 is the first remaining frame).

The cuts are clamped so you can't slice past the batch (it caps at total_frames - 1), which means it degrades gracefully instead of erroring on a short video.

The four outputs

• images - the trimmed batch, ready to feed a VAE decode or the next stage.
• first_image and last_image - the first and last remaining content frames. These are the killer feature for LTX work: grab the last frame and feed it back into an image-to-video node to extend a clip, or use it as a keyframe for the first/last-frame workflows the pack's LTXV nodes support.
• selected_frame - whatever single frame export_frame_number points at, for cases where you want one specific moment.

Why it exists

This is a quality-of-life node in the best sense. LTX's 8n+1 frame snapping (the pack's own LTXV nodes snap lengths to that pattern) means you're often dealing with batches whose edges are near-guaranteed junk, and the standard fix - cutting frames by hand elsewhere in the graph - requires nodes that mostly don't exist in core ComfyUI. Here, trimming and frame-extraction are one small node, no scripting.

Installing it

Standard StarNodes install - ComfyUI Manager, search Starnodes, install, restart:

cd ComfyUI/custom_nodes
git clone https://github.com/Starnodes2024/ComfyUI_StarNodes
cd ComfyUI_StarNodes
pip install -r requirements.txt

Then double-click the canvas and search star - it lives under ⭐StarNodes/Video.

Gotchas

The default cut_last_frames = 10 is a lot - on a 97-frame clip that's over 10% of your footage gone. Tune it to your own outputs before you build it into a permanent workflow. And note the cuts happen before selected_frame is pulled, so export_frame_number is relative to the trimmed batch, not the original. If you're extending clips, wire last_image straight back into the pack's LTXV all-in-one as the first_frame - that's the loop this node was clearly built for.