From bf150133c8596c818188b1222520ea697e0b2987 Mon Sep 17 00:00:00 2001 From: Ethanfel Date: Sun, 22 Feb 2026 15:10:52 +0100 Subject: [PATCH] Add example workflow with model download links and explanatory notes Two-pass distilled VACE extend workflow with 6 notes covering: pipeline overview, VACE tools, sampling strategy, VRAM optimization, model downloads (3 options), and decode/merge guidance. Co-Authored-By: Claude Opus 4.6 --- .../simple-vace-extend-model.json | 3607 +++++++++++++++++ 1 file changed, 3607 insertions(+) create mode 100644 example_workflows/simple-vace-extend-model.json diff --git a/example_workflows/simple-vace-extend-model.json b/example_workflows/simple-vace-extend-model.json new file mode 100644 index 0000000..40ed6cc --- /dev/null +++ b/example_workflows/simple-vace-extend-model.json @@ -0,0 +1,3607 @@ +{ + "id": "9afdd68d-f1a5-4d6f-a8be-3871f14b2a62", + "revision": 0, + "last_node_id": 174, + "last_link_id": 240, + "nodes": [ + { + "id": 78, + "type": "GetNode", + "pos": [ + 9408, + -1600 + ], + "size": [ + 210, + 58 + ], + "flags": {}, + "order": 0, + "mode": 0, + "inputs": [], + "outputs": [ + { + "name": "WANVIDEOMODEL", + "type": "WANVIDEOMODEL", + "links": [ + 90 + ] + } + ], + "title": "Get_model_Vace_Ex_Low", + "properties": { + "ue_properties": { + "widget_ue_connectable": {}, + "version": "7.1", + "input_ue_unconnectable": {} + } + }, + 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"type": "VACE_PIPE", + "link": 211 + }, + { + "name": "source_clip_2", + "shape": 7, + "type": "IMAGE", + "link": null + } + ], + "outputs": [ + { + "name": "merged_clip", + "type": "IMAGE", + "links": [ + 203 + ] + } + ], + "properties": { + "aux_id": "Comfyui-VACE-Tools.git", + "ver": "a164fbeb8708c6afa6dc34bf79f2edef9c11220c", + "Node name for S&R": "VACEMergeBack", + "ue_properties": { + "widget_ue_connectable": {}, + "input_ue_unconnectable": {}, + "version": "7.6.2" + } + }, + "widgets_values": [ + "optical_flow", + "max" + ] + }, + { + "id": 163, + "type": "Note", + "pos": [ + 1920, + -1504 + ], + "size": [ + 640, + 900 + ], + "flags": {}, + "order": 18, + "mode": 0, + "inputs": [], + "outputs": [], + "properties": { + "ue_properties": { + "widget_ue_connectable": {}, + "version": "7.6.2", + "input_ue_unconnectable": {} + } + }, + "widgets_values": [ + "šŸ“¦ REQUIRED MODELS ā€” Download & Place in ComfyUI/models/\n\nā•ā•ā• DIFFUSION MODELS ā†’ diffusion_models/ ā•ā•ā•\n\nOption A ā€” Full VACE Fun (best quality, ~28GB total):\nhttps://huggingface.co/alibaba-pai/Wan2.2-VACE-Fun-A14B/tree/main\nDownload both HIGH and LOW .safetensors files.\nPlace in: diffusion_models/VACE/\n\nOption B ā€” Distilled 4-step (used in this workflow, fastest):\nHIGH: https://huggingface.co/lightx2v/Wan2.2-Lightning/resolve/main/Wan2.2-T2V-A14B-4steps-250928-dyno/Wan2.2-T2V-A14B-4steps-250928-dyno-high-lightx2v.safetensors\nPlace in: diffusion_models/wan/\n\nOption C ā€” fp8 quantized (half VRAM, good quality):\nHIGH: https://huggingface.co/Kijai/WanVideo_comfy_fp8_scaled/resolve/main/T2V/Wan2_2-T2V-A14B_HIGH_fp8_e4m3fn_scaled_KJ.safetensors\nLOW: https://huggingface.co/Kijai/WanVideo_comfy_fp8_scaled/resolve/main/T2V/Wan2_2-T2V-A14B-LOW_fp8_e4m3fn_scaled_KJ.safetensors\n\nā•ā•ā• VACE MODULES ā†’ diffusion_models/VACE/ ā•ā•ā•\n(Required for all options above)\n\nHIGH: https://huggingface.co/Kijai/WanVideo_comfy/resolve/main/Fun/VACE/Wan2_2_Fun_VACE_module_A14B_HIGH_bf16.safetensors\nLOW: https://huggingface.co/Kijai/WanVideo_comfy/resolve/main/Fun/VACE/Wan2_2_Fun_VACE_module_A14B_LOW_bf16.safetensors\n\nā•ā•ā• DISTILL LoRAs ā†’ loras/Wan Video/ ā•ā•ā•\n(Only needed with non-distilled base models)\n\nHIGH noise: https://huggingface.co/lightx2v/Wan2.2-Distill-Loras/resolve/main/wan2.2_t2v_A14b_high_noise_lora_rank64_lightx2v_4step_1217.safetensors\nLOW noise: https://huggingface.co/lightx2v/Wan2.2-Distill-Loras/resolve/main/wan2.2_t2v_A14b_low_noise_lora_rank64_lightx2v_4step_1217.safetensors\n\nā•ā•ā• VAE & TEXT ENCODER ā•ā•ā•\n(Auto-downloaded by WanVideoWrapper)\nVAE: wan_2.1_vae_fp32.safetensors\nText encoder: umt5_xxl_fp16.safetensors" + ], + "color": "#432", + "bgcolor": "#653" + }, + { + "id": 58, + "type": "WanVideoDecode", + "pos": [ + 10688, + -1632 + ], + "size": [ + 270, + 198 + ], + "flags": {}, + "order": 52, + "mode": 0, + "inputs": [ + { + "name": "vae", + "type": "WANVAE", + "link": 55 + }, + { + "name": "samples", + "type": "LATENT", + "link": 56 + } + ], + "outputs": [ + { + "name": "images", + "type": "IMAGE", + "links": [ + 201 + ] + } + ], + "properties": { + "cnr_id": "ComfyUI-WanVideoWrapper", + "ver": "e5ef9752a7e846b232fc05fd993327a2e870a788", + "Node name for S&R": "WanVideoDecode", + "ue_properties": { + "widget_ue_connectable": { + "enable_vae_tiling": true, + "tile_x": true, + "tile_y": true, + "tile_stride_x": true, + "tile_stride_y": true, + "normalization": true + }, + "version": "7.1", + "input_ue_unconnectable": {} + } + }, + "widgets_values": [ + false, + 272, + 272, + 144, + 128, + "default" + ] + }, + { + "id": 171, + "type": "Note", + "pos": [ + 4512, + -1880 + ], + "size": [ + 2080, + 140 + ], + "flags": {}, + "order": 19, + "mode": 0, + "inputs": [], + "outputs": [], + "properties": { + "ue_properties": { + "widget_ue_connectable": {}, + "version": "7.6.2", + "input_ue_unconnectable": {} + } + }, + "widgets_values": [ + "šŸ”§ VACE PIPELINE (Source Prep ā†’ Mask Gen ā†’ Encode ā†’ Merge Back)\n\n1. Source Prep trims the input video to fit target_frames, keeping context frames around the edit region.\n2. Mask Generator builds the black/white mask (keep vs generate) and control_frames (source pixels + grey fill for generated regions).\n3. VACE Encode converts control_frames + mask into latent embeddings the sampler can condition on.\n4. After sampling + decode, Merge Back splices the generated segment into the full original video with optical flow blending at the seams.\n\nChange the mode in Source Prep to switch between End Extend, Middle Extend, Frame Interpolation, etc. The Mask Generator mode is wired automatically." + ], + "color": "#233", + "bgcolor": "#355" + }, + { + "id": 174, + "type": "Note", + "pos": [ + 9184, + -1952 + ], + "size": [ + 1152, + 224 + ], + "flags": {}, + "order": 20, + "mode": 0, + "inputs": [], + "outputs": [], + "properties": { + "ue_properties": { + "widget_ue_connectable": {}, + "version": "7.6.2", + "input_ue_unconnectable": {} + } + }, + "widgets_values": [ + "šŸŽžļø DECODE & MERGE BACK\n\nWanVideoDecode converts the final latent back to pixel space. Enable VAE tiling here if you're low on VRAM.\nVACEMergeBack splices the generated frames into the original full-length video. The vace_pipe from Source Prep carries\ntrim bounds and context counts ā€” blending is fully automatic. Use 'optical_flow' blend for best seam quality (needs OpenCV),\nor fall back to 'alpha' (linear crossfade) or 'none' (hard cut)." + ], + "color": "#233", + "bgcolor": "#355" + }, + { + "id": 173, + "type": "Note", + "pos": [ + 2624, + -192 + ], + "size": [ + 1824, + 352 + ], + "flags": {}, + "order": 21, + "mode": 0, + "inputs": [], + "outputs": [], + "properties": { + "ue_properties": { + "widget_ue_connectable": {}, + "version": "7.6.2", + "input_ue_unconnectable": {} + } + }, + "widgets_values": [ + "šŸ’¾ VRAM OPTIMIZATION\n\nCurrent: bf16 models loaded to offload_device (CPU). Models swap to GPU only during inference.\nBlock Swap is set to 0 (disabled). This is the first thing to change if you run out of VRAM.\n\nā€¢ Low VRAM (8-12GB): Use fp8 models + set Block Swap blocks to 20-30 + enable VAE tiling in Decode\nā€¢ Medium VRAM (16GB): Use bf16 models + Block Swap blocks 10-15\nā€¢ High VRAM (24GB+): Use bf16 models + load_device=main_device (full GPU) + Block Swap 0\n\nThe LoRA selectors are pre-wired but currently set to 'none' for the HIGH model. If you swap to non-distilled\nbase models (Option A or C), connect the matching LightX2V distill LoRA (high_noise for HIGH, low_noise for LOW)." + ], + "color": "#322", + "bgcolor": "#533" + }, + { + "id": 170, + "type": "Note", + "pos": [ + 2624, + -1952 + ], + "size": [ + 768, + 224 + ], + "flags": {}, + "order": 22, + "mode": 0, + "inputs": [], + "outputs": [], + "properties": { + "ue_properties": { + "widget_ue_connectable": {}, + "version": "7.6.2", + "input_ue_unconnectable": {} + } + }, + "widgets_values": [ + "šŸŽ¬ VACE TOOLS ā€” Two-Pass Distilled Video Extension Workflow\n\nThis workflow extends or edits a source video using WanVideo VACE with a two-pass distilled sampling strategy:\n ā€¢ Pass 1 (HIGH noise, Ļƒ > 0.9): Generates coarse structure using the high-noise distilled model\n ā€¢ Pass 2 (LOW noise, Ļƒ < 0.9): Refines details using the Fun VACE LOW model\n\nEach pass uses a different model optimized for its noise range, cutting total steps from ~30 to just 6.\n\nPipeline: Load Video ā†’ Source Prep ā†’ Mask Gen ā†’ VACE Encode ā†’ Sampler (2-pass) ā†’ Decode ā†’ Merge Back\n\nāš” Default config: 6 total steps, shift=6.9, sigma split at 0.9. 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