comfyui-obvpm-timeline

A MiniMax H3 ComfyUI workflow and nodes that allow generating, extending, prepending, bridging and editing videos in an easy to use UI.

The timeline node is like a mini video editor.

And it also supports creating seamless looping videos.

Updates

0.1.1-004

• Updated defaults, fix model wiring disconnected for some users issue

Watch the Tutorial

The best way to learn how to use the Timeline and workflow is by watching the YouTube tutorial video:

Watch on YouTube: https://youtu.be/kqP09NfJXaQ

Features

The main node is the Timeline node: the clips you generate are placed on it, and it is where you arrange, cut and preview them, and pick which clip the next generation continues from.

Generate a clip, see if you like it, add it to the timeline, then extend from it. Any part you don't like can be redone later.

Every generated clip is saved together with a motion context file (.mctx) that holds its latents. Extensions continue from those original latents using latent masks, not from re-encoded pixels, so there are no lighting changes or flickers at the joins. And because the files sit next to the clips, a clip can still be extended at full quality days or months later.

Generating

• Extend a clip seamlessly.

• Prepend: generate what happens before a clip

• Bridge: generate what happens between the end of one clip and the beginning of another. This lets you redo any section of the video, and bridging onto a fresh generation brings the quality back if it has drifted.

• Loop: bridge the last clip back to the first clip to make a seamless looping video.

• Extend from a cut: if a clip ends badly, cut off the bad part and extend from the good part. Snap cuts keeps cuts on the latent frame grid.

• Clips that have no motion context (external clips, clips from other workflows) can be extended too, with seam improvements applied automatically.

• Result preview: plays each new clip joined to its neighbours and rates how seamless the join is. From there you add it to the timeline, delete it or dismiss it.

• Model preview override: Integrated into the result preview. Lets you quickly see if a generation is going wrong.

Timeline

• Mini Video Editor: Drag in clips from anywhere, reorder them by dragging, trim the ends, cut left / cut right at the playhead, undo cuts, and open gaps.

• Quick preview: plays through the clips right away. Full preview assembles them into a single video file, losslessly where possible. Export saves the finished video.

• Load Settings, Prompts from Clips: restores the prompt, seed, settings and references that a clip was generated with, so you don't have to keep track of them yourself.

• Swap takes: Swap between previous takes generated for the same extension, so you can go back to them and swap between them on the timeline.

• The sequence is also available as text, for copying a timeline into another workflow.

Upscaling

• A latent upscale and refine of the whole sequence in one pass, so details stay consistent across the joins and the result is still seamless.

• Sampling is done in windows, so long or high resolution videos still fit in VRAM.

• Generate at low resolution for fast iteration, then upscale once at the end. This is optional, you can also generate the first pass at final quality.

• Each clip's conditioning is saved with it, so the upscale uses the same references the clip was generated with.

Workflow

• Organized for fast and easy use. All inputs are in one area. No pan all over the workflow to change things.

• Settings Presets: Allows you to save frequently used settings such as steps, turbo, and sampling settings and control them in one place

• Up to four image references, plus video and audio references. (More can be added)

Dependencies

The workflow uses these custom node packs, so install them first (ComfyUI Manager's Install Missing Custom Nodes finds them):

• comfyui-obvpm-timeline: Timeline, extend / prepend / bridge / loop generation, and the whole-sequence upscale

• comfyui-obvpm: Bundles, Settings Presets, switches and gates, Load Images & Compose

• ComfyUI-KJNodes — Set / Get nodes, model preview override, Sage attention patch

• Comfyui_Minimax_h3_latent_Upscaler: The latent upscaler used by the upscale pass

• ComfyUI-MiniMax-H3-Turbo: Turbo LoRA loader for larryvrh turbo

• ComfyUI-Spectrum-MiniMax-H3: Spectrum acceleration

• rgthree-comfy: Power Lora Loader