SVI PRO V2 LONG VIDEO Workflow - STABLE, CONSISTENT LONG-FORM VIDEO IN COMFYUI

The SVI PRO LONG VIDEO Workflow is a carefully curated ComfyUI pipeline designed to generate long-duration videos (up to ~20 seconds) with stable motion, character consistency, and optimized generation times. This workflow focuses on maintaining character identity, clothing, and scene coherence, even as the video length increases.

Starting from a single initial image (first frame), the workflow progressively extends the video by applying prompt-driven actions and optional LoRAs, ensuring smooth transitions and consistent visual quality across the entire sequence.

Key Capabilities:

🎬 Long-Form Video Generation (Up to 20s)

Generate stable, coherent videos in the 19–20 second range with minimal motion drift and no noticeable lag during testing.

🧍 Character & Clothing Consistency

Designed to preserve subject identity, outfits, and visual details across extended timelines.

🧠 Segment-Based Action Control with LoRAs

Optionally apply specialized LoRAs per segment or action—for example:

• Running → Crying → Jumping ;)
• Action-specific or character-specific LoRAs for different phases

This allows fine-grained control over complex sequences while maintaining overall coherence.

🖼️ First-Frame Driven Continuity

The workflow uses the initial image as a strong anchor, then incrementally adds motion and actions based on prompts and LoRAs.

🔁 Infinite Extension Capability

One of the most powerful features:

You can reuse the last frame of any generated output as the new starting frame and continue extending the video length indefinitely, segment by segment.

🎥 Mid-Sequence Export Flexibility

You can save or export video segments at intermediate points (e.g., 5s, 10s, 15s) in case you want to:

• Preserve a strong section
• Avoid later-stage degradation
• Rebuild or refine later parts

⚡ Optimized Performance

• Typical generation time: ~615–670 seconds for a full 19–20s video (excluding cold start)
• Tested up to 1024×576 resolution without out-of-memory errors
• Stable performance with no lag observed during initial testing

Prompting & Usage Tips:

• Keep prompts simple and clear for each segment to avoid confusing the model.
• Adjust video height and width for your needs
• Gradually layer actions instead of describing everything at once.
• Experiment with LoRA combinations to discover optimal action transitions.
• After a few runs, you’ll quickly learn how to prompt for cleaner, longer generations.

Ideal Use Cases:

• AI storytelling and cinematic sequences
• Character-driven performances
• Long-form action or narrative videos
• Incremental video building with high control

The SVI PRO LONG VIDEO Workflow is built for creators who want longer, cleaner, and more controllable AI videos—with the freedom to extend, refine, and evolve scenes over time. Experiment, iterate, and enjoy building truly long-form AI video content inside ComfyUI.