Wan 2.1 Text-to-Video T2V & Image-to-Video I2V Tutorial for SwarmUI with CausVid LoRA Extreme Speed
Added 2025-05-18 23:33:40 +0000 UTCTutorial Link
Tutorial Info
Wan 2.1 is still the very best local AI video generation model and it just became even more amazing and faster with CausVid LoRA. Now with utilizing ComfyUI backend power inside SwarmUI and my automatic installers to utilize Sage Attention, you can very fast generate very high quality AI videos with Wan 2.1 and CausVid LoRA at just 8 steps.
Tutorial Links
🔗Follow below link to download the zip file that contains SwarmUI installer and AI models downloader Gradio App - the one used in the tutorial ⤵️
▶️ How to install SwarmUI main tutorial : https://youtu.be/fTzlQ0tjxj0
🔗Follow below link to download the zip file that contains ComfyUI 1-click installer that has all the Flash Attention, Sage Attention, xFormers, Triton, DeepSpeed, RTX 5000 series support ⤵️
🔗 Python, Git, CUDA, C++, FFMPEG, MSVC installation tutorial - needed for ComfyUI ⤵️
🔗 SECourses Official Discord 10500+ Members ⤵️
🔗 Stable Diffusion, FLUX, Generative AI Tutorials and Resources GitHub ⤵️
🔗 SECourses Official Reddit - Stay Subscribed To Learn All The News and More ⤵️
▶️ CausVid LoRA Official repo : https://github.com/tianweiy/CausVid
VIDEO CHAPTERS
0:00 Introduction & Amazing Demo
0:23 Tutorial Goals: Video Gen (1.2.1), Speedups (CowsWith, Rife)
0:35 SwarmUI: Installation & Update Process
0:57 SwarmUI Downloader: 1.2.1 Model & CowsWith Lora
1:48 Optional: Integrating Models with ComfyUI
2:12 SwarmUI Start, Config & Rife Interpolation
2:38 Image-to-Video: Importing Presets
2:51 Image-to-Video: GGUF Model Selection & VRAM
3:09 Image-to-Video: Optimal Resolution & Aspect Ratio
3:21 Image-to-Video: CowsWith Lora & "Fast CowsWith" Preset
3:44 Image-to-Video: Key Parameters (Steps, CFG, Init Image)
4:04 Image-to-Video: Creativity (0) & Frame Count
4:26 VRAM Management: Avoiding Shared VRAM Slowdowns
4:40 Image-to-Video: Rife x2 (Double FPS) & Advanced Settings
4:56 Image-to-Video: Trimming Frames & Crafting Prompt
5:24 Dual GPU I2V Gen: RTX 5090 vs 3090Ti
5:55 I2V Speed, VRAM & First Result Analysis (RTX 5090: 5.7s/it)
6:35 First I2V Result Review & Iteration Needs
6:52 Second I2V Result: AI Fixes Missing Parts!
7:20 Recap: Power of Optimized SwarmUI
7:33 Text-to-Video: Switching & Model Setup
8:04 Text-to-Video: Applying T2V Presets
8:19 Text-to-Video: Key Parameter Differences
8:34 Text-to-Video: Setting Resolution & Rife
9:02 Text-to-Video: Prompting & Ensuring Lora
9:17 Speed vs Quality: T-Cash & Sage Attention
9:30 Text-to-Video: Dual GPU Generation Start & Setup
10:03 Text-to-Video: VRAM Check & Speed Expectations
11:51 Text-to-Video Speed Analysis: 5090 (8.4s/it) vs 3090Ti (18.2s/it)
12:01 Text-to-Video Result (576x1008) Review: "Really Great!"
12:55 Teaser: "My Diffusion Based Upscaler" & Quick Peek
13:10 Upscaler Features: Splitting, Per-Clip Prompting/Upscaling
13:35 Upscaler Features: Auto-Caption (CogVLM2), Ratio Control
13:45 Upscaler Features: Batch Processing & Max Frame Control
13:51 Upscaler: Quality Goal (10x+), Optimizations & Ideas
18:01 Upscaler: FFmpeg Presets, Dev Status & Vision
18:13 Final Recap: Hope You Enjoyed & Generated Videos Review
18:20 Generated Video Quality & Time Assessment: "Magnificent!"
18:24 Final Timings: RTX 3090Ti (170s) vs RTX 5090 (90s)
18:32 Your Choice: Resolution, Frames, Speed & VRAM Balance
ABSTRACT
Current video diffusion models achieve impressive generation quality but struggle in interactive applications due to bidirectional attention dependencies. The generation of a single frame requires the model to process the entire sequence, including the future. We address this limitation by adapting a pretrained bidirectional diffusion transformer to an autoregressive transformer that generates frames on-the-fly. To further reduce latency, we extend distribution matching distillation (DMD) to videos, distilling 50-step diffusion model into a 4-step generator. To enable stable and high-quality distillation, we introduce a student initialization scheme based on teacher's ODE trajectories, as well as an asymmetric distillation strategy that supervises a causal student model with a bidirectional teacher. This approach effectively mitigates error accumulation in autoregressive generation, allowing long-duration video synthesis despite training on short clips. Our model achieves a total score of 84.27 on the VBench-Long benchmark, surpassing all previous video generation models. It enables fast streaming generation of high-quality videos at 9.4 FPS on a single GPU thanks to KV caching.
Comments
i am gonna publish a video about teacache hopefully very soon and regular Wan 2.1 . i searched configs
Furkan Gözükara
2025-05-21 21:24:10 +0000 UTCThank you for this, was just thinking few days ago if it works to make video with Wan in SwarmUI with the Comfy back-end, to maximize the GPU and speed of generation, and then this post arrived 😊
Dan
2025-05-21 16:17:12 +0000 UTCi agree. unfortunately only way is testing all and prefer whichever you like :D
Furkan Gözükara
2025-05-21 15:41:17 +0000 UTCIn your opinion which is best and easiest to use for image to video generation: Framepack, Wan 2.1 I2V - V2V - T2V Advanced Gradio APP V70, or latest SwarmUI with WAN support (this post). So many options I don't know how to keep them separated in my work flow.
Ec Jep
2025-05-21 15:33:15 +0000 UTCi guess you have to report it here : https://github.com/mcmonkeyprojects/SwarmUI/issues
Furkan Gözükara
2025-05-19 22:53:44 +0000 UTCHave problem with installing RIFE. Basically it hangs for 2 minutes on fresh install than it closes with timeout error. At next run install button is not visible anymore and following errors show up (as RIFE folder is empty) : 23:20:52.773 [Warning] [ComfyUI-0/STDERR] Traceback (most recent call last): 23:20:52.775 [Warning] [ComfyUI-0/STDERR] File "D:\AI\SwarmUI_Model_Downloader_v39\SwarmUI\dlbackend\comfy\ComfyUI\nodes.py", line 2131, in load_custom_node 23:20:52.776 [Warning] [ComfyUI-0/STDERR] module_spec.loader.exec_module(module) 23:20:52.776 [Warning] [ComfyUI-0/STDERR] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^ 23:20:52.777 [Warning] [ComfyUI-0/STDERR] File "", line 1022, in exec_module 23:20:52.778 [Warning] [ComfyUI-0/STDERR] File "", line 1159, in get_code 23:20:52.778 [Warning] [ComfyUI-0/STDERR] File "", line 1217, in get_data 23:20:52.778 [Warning] [ComfyUI-0/STDERR] FileNotFoundError: [Errno 2] No such file or directory: 'D:\\AI\\SwarmUI_Model_Downloader_v39\\SwarmUI\\src\\BuiltinExtensions\\ComfyUIBackend\\DLNodes\\ComfyUI-Frame-Interpolation\\__init__.py'
marcon kun
2025-05-19 21:47:28 +0000 UTC[Error] Error in websocket handler: System.AggregateException: One or more errors occurred. (Invalid value for parameter Init Image) ---> System.Exception: Invalid value for parameter Init Image ---> System.ArgumentException: Data is empty! (Parameter 'data') at SwarmUI.Utils.Image..ctor(Byte[] data, ImageType type, String extension) in E:\ai\swarmui\SwarmUI\src\Utils\Image.cs:line 79 at SwarmUI.Utils.Image..ctor(String base64, ImageType type, String extension) in E:\ai\swarmui\SwarmUI\src\Utils\Image.cs:line 64 at SwarmUI.Text2Image.T2IParamInput.g__imageFor|55_1(String val) in E:\ai\swarmui\SwarmUI\src\Text2Image\T2IParamInput.cs:line 1316 at SwarmUI.Text2Image.T2IParamInput.Set(T2IParamType param, String val) in E:\ai\swarmui\SwarmUI\src\Text2Image\T2IParamInput.cs:line 1324 at SwarmUI.Text2Image.T2IParamTypes.ApplyParameter(String paramTypeName, String value, T2IParamInput data) in E:\ai\swarmui\SwarmUI\src\Text2Image\T2IParamTypes.cs:line 987 --- End of inner exception stack trace --- at SwarmUI.Text2Image.T2IParamTypes.ApplyParameter(String paramTypeName, String value, T2IParamInput data) in E:\ai\swarmui\SwarmUI\src\Text2Image\T2IParamTypes.cs:line 995 at SwarmUI.Text2Image.T2IPreset.ApplyTo(T2IParamInput user_input) in E:\ai\swarmui\SwarmUI\src\Text2Image\T2IPreset.cs:line 48 at SwarmUI.WebAPI.T2IAPI.RequestToParams(Session session, JObject rawInput) in E:\ai\swarmui\SwarmUI\src\WebAPI\T2IAPI.cs:line 227 at SwarmUI.WebAPI.T2IAPI.GenT2I_Internal(Session session, ValueTuple`4 input, Action`1 output, Boolean isWS) in E:\ai\swarmui\SwarmUI\src\WebAPI\T2IAPI.cs:line 254 --- End of inner exception stack trace ---
Klaus The.
2025-05-19 21:04:58 +0000 UTCFreshly installed the swarmui and downloaded the WAN modelspack. Imported your presets and loaded model, lora and applied your preset. Sadly, can't generate videos, there always comes the error "Invalid value for parameter Init Image". I chose an image, clicked the "Use closest aspect ratio" but always get the following error, tested in Firefox and Vivaldi(Chromeengine):
Klaus The.
2025-05-19 21:04:53 +0000 UTC
