SVI 2 PRO with First/Last Frame (Keyframes) // Video Continuation // 3-Stage Loop Automation

This ComfyUI workflow extends an existing video into a continuation using a video, prompt, and keyframes; its experimental loop mode uses Start, Loop, and End images plus three prompts to create a sequence with a repeating action.

Video extension pairs SVI 2 PRO motion continuity with Wan 2.2 First/Last Frame control over the end of a clip.

Loop mode moves from Start to loop entry, repeats the loop action, then exits to the final frame; the action can vary by cycle when increment is enabled.

For video extension, load an existing video and add a prompt; the described output is a continuation.

Loop mode takes Start, Loop, and End images with three prompts matched to their transitions, producing a sequence that repeats the loop action before reaching the final frame.

To use First/Last Frame control, update the Wan-SVI2Pro-FLF nodes to the latest version.

Listed model files include `rife49.pth`, `wan2.2_i2v_lightx2v_4steps_lora_v1_high_noise.safetensors`, `RealESRGAN_x4plus.safetensors`, `SVI_v2_PRO_Wan2.2-I2V-A14B_LOW_lora_rank_128_fp16.safetensors`, and `wan2.2_i2v_lightx2v_4steps_lora_v1_low_noise.safetensors`.

Other listed model files are `umt5_xxl_fp8_e4m3fn_scaled.safetensors`, `wan_2.1_vae.safetensors`, `wan22EnhancedNSFWCameraPrompt_nsfwFASTMOVEV2Q8L.gguf`, `wan22EnhancedNSFWCameraPrompt_nsfwFASTMOVEV2Q8H.gguf`, and `SVI_v2_PRO_Wan2.2-I2V-A14B_HIGH_lora_rank_128_fp16.safetensors`.

Listed node packs include `comfyui-impact-pack`, `comfyui-customnodes-template`, `comfyui_essentials`, `comfyui_layerstyle`, `comfyui-gguf`, and `comfyui-videohelpersuite`. The list also names `comfyui-frame-interpolation`, `rgthree-comfy`, `pr-was-node-suite-comfyui-47064894`, `

Use the `end_samples` switch to turn Last Frame control on or off; when off, the node returns to base SVI 2 PRO behavior.

If an output looks washed out, try the contrast adjustment.

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For loop mode, match each prompt to its corresponding image transition.

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Before downloading, verify that the Civitai page title and version match this video continuation workflow and `3-Stage Loop Automation`; before setup, confirm where to get `comfyui-gguf`, `ComfyMath`, `pr-was-node-suite-comfyui-47064894`, the two named camera prompt files, and `

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The 3-Part Loop Mode is labeled experimental, and no license is listed; check its behavior and usage terms before reuse.

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