Requirements tracking for ComfyUI-Erosdiffusion-LTX2

Initial Requirements (2026-01-19)

REQ-001: LTXV Audio-Video Extension Node

Branch: feature/REQ-001-scene-extender Status: In Progress

Create a new ComfyUI node that extends video AND audio simultaneously:

Extends existing video and audio using LTXAVModel native generation
Supports timestamped prompts with image guides at first/end/specific frames
Handles memory constraints (10GB VRAM target)
Provides smooth audio blending at chunk transitions
Uses only seconds for user-facing time inputs (internal frame math abstracted)

REQ-002: Timeline Editor Node (Secondary)

Branch: feature/REQ-002-timeline-editor Status: Planned

Visual timeline interface for creating scene scripts:

Drag-and-drop timeline with markers
Image thumbnail previews
Waveform visualization
Dialogue text entry
Export to script format

REQ-003: Node Naming Convention

Branch: feature/REQ-001-scene-extender Status: Completed

All custom nodes must follow the naming pattern:

Prefix: 💜 (Purple Heart Emoji + Space)
Suffix: ErosDiffusion (Space + ErosDiffusion) Example: 💜 LTXV Scene Extender ErosDiffusion

Script Format Specification

[MM:SS-MM:SS] SCENE_DESCRIPTION | AUDIO_SPEC | GUIDE_SPECS...

Audio specs:
  audio:silent              - No speech/sound
  audio:"dialogue text"     - Speech to generate
  audio:ambient             - Ambient sounds only

Guide specs:
  first:IMAGE_REF           - Guide at first frame
  end:IMAGE_REF             - Guide at last frame
  MM:SS:IMAGE_REF           - Guide at specific timestamp
  MM:SS.ms:IMAGE_REF        - With millisecond precision

IMAGE_REF:
  $0, $1, etc.              - Reference to guide_images batch
  filename.png              - File path

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