# LTX 2.3 First Last Frame

## Summary

`LTX 2.3` first-last-frame workflow for controlled transition video generation.

## Model Family

- `ltx`

## Status

- `imported-only`

## Source

- Workflow pack page: <https://huggingface.co/RuneXX/LTX-2.3-Workflows>
- Workflow file: <https://huggingface.co/RuneXX/LTX-2.3-Workflows/resolve/main/First-Last-Frame/LTX-2.3_-_FLF2V_First-Last-Frame.json?download=true>
- Original publisher: `RuneXX`
- Date imported: `2026-08-08`

## Developer notes

- Part of the RuneXX extracted-model workflow pack.
- Includes several attention/sage/memory-efficiency helpers compared with the simpler LTX graphs.

## Our notes

- This is one of the most relevant `LTX 2.3` workflows for you because first/last-frame control is a practical, non-toy use case.
- It is heavier than the simple single-pass workflows, so it is more of a second-step test after confirming LTX is even workable on the `3070`.

## Required custom nodes

- `ComfyUI-KJNodes`
- `rgthree-comfy`
- attention/memory helper nodes used by the RuneXX pack

## Notes

- Best current LTX first-last-frame import in the repo.