ComfyUI Tutorial Series Ep 69: Create Long Videos with LongCat Video Model

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In this episode of the ComfyUI Tutorial Series, learn how to create long, seamless videos using the new LongCat video model, a free and open-source model for text-to-video and image-to-video generation. LongCat is unique because it can extend videos scene-by-scene without the typical start-to-end frame cutoff, letting you produce continuous long-form videos locally in ComfyUI. You’ll see step-by-step how to: - Download and set up the LongCat model, Lora, and VAE components in ComfyUI - Adjust VRAM settings and avoid Out of Memory errors with block swap optimization - Configure image ratios, sizes, and prompts for both portrait and landscape formats - Generate realistic scene extensions and stitch them together smoothly - Use subgraphs and templates to automate multi-scene video workflows - Run the same workflow in the cloud (Running Hub) if you don’t have a powerful GPU This tutorial is perfect for AI creators, ComfyUI users, and anyone who wants to produce AI-generated cinematic videos from text or images using local or cloud setups. Get the workflows and instructions from discord for free Step 1: use this link to join if you didn't join already https://discord.gg/gggpkVgBf3 Step 2: go to this post to get the workflows https://discord.com/channels/1245221993746399232/1435290787817455686/1435291002620612719 More about the LongCat Video https://huggingface.co/meituan-longcat/LongCat-Video Showcase: https://www.longcatai.net/#showcases Get the LongCat Models from here https://huggingface.co/Kijai/LongCat-Video_comfy/tree/main Run the Workflow in the cloud on runninghub: LongCat img2video - 5 to 30 sec https://www.runninghub.ai/post/1985361097781821441/?inviteCode=kol02-rh003 Get the easy ComfyUI Installer from here https://github.com/Tavris1/ComfyUI-Easy-Install Check Other Episodes https://www.youtube.com/playlist?list=PL-pohOSaL8P9kLZP8tQ1K1QWdZEgwiBM0 Unlock exclusive perks by joining our channel: https://www.youtube.com/channel/UCmMbwA-s3GZDKVzGZ-kPwaQ/join Grab your Pixaroma merch from here: https://www.youtube.com/@pixaroma/store If this tutorial helped you, leave a like, comment, and subscribe for more ComfyUI workflow tutorials. #comfyuitutorial #comfyui #imagetovideoai Chapters 00:00 Introduction to LongCat Video Model 01:03 Installing Models and Loras in ComfyUI 02:16 How to use the LongCat Workflow 06:33 Text to Video Workflow 07:07 LongCat image to video workflow 09:39 Extend over 30 seconds 11:16 Running in the Cloud on RunningHub