H3 Infinite Video Continuation and automatic Stitching with Fl2Va Model
With these Workflows (you'll also need to download my Custom Nodes via the ComfyUI Manager) you can create MiniMax H3 videos of pretty much infinite length by chaining shorter clips together.I specifically built the Nodepack around the MiniMax H3 FL2VA model.The main idea is to keep the visual quality and control of FL2VA while allowing you to continue a video over and over again without having to rely on only the last rendered frame.Starting with v1.4, continuation now uses ComfyUI's native Masked AV Latent Continuation. Instead of asking H3 to recreate the beginning of the next clip from guidance, a safe part of the previous video + audio latent is copied directly into the next generation and protected from denoising.In my testing this significantly improved continuity between clips and, especially, fixed the small brightness / color changes that could sometimes happen with the older continuation method.v1.4 also supports flexible H3 conditioning and multiple Qwen Reference Images, so you can use the workflows with different combinations of First Frames, Last Frames and References.Included WorkflowsThe following Workflows are included:1. Start VideoHerrgotts_H3_Infinite_v1.4_01_Start.jsonUse this Workflow to create the first Clip of your video.v1.4 supports flexible H3 conditioning, so depending on what you connect you can use it similar to:T2VAI2VAL2VAFL2VAYou can provide:PromptFirst FrameLast FrameUp to 9 Qwen Reference ImagesFirst and Last Frames are optional, although for most projects I'd recommend using both.After generation the Workflow automatically saves the complete Video + Audio Latent that will be used for the next Clip.2. Continue Video into infinityHerrgotts_H3_Infinite_v1.4_02_Continue.jsonUse this Workflow for every Clip after the first one.Load the saved AV Latent from your previous Clip, enter your new Prompt and optionally provide a new Last Frame and Qwen Reference Images.The Workflow automatically analyzes the previous Clip, removes the typica
