{
  "id": 16674533,
  "title": "From Veo to Motion Transfer: Building Demo Videos for a BJJ Training App",
  "url": "https://urgent.news/2026/10/26/from-veo-to-motion-transfer-building-demo-videos-for-a-bjj-training",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-26T23:24:13.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/toshipon/from-veo-to-motion-transfer-building-demo-videos-for-a-bjj-training-app-2bj1"
  },
  "original_language": "en",
  "account": "My BJJ coach advised me that daily HIIT sessions would best build stamina for match conditions. Consequently, I developed BJJ FLOW, an app tailored to Brazilian Jiu-Jitsu training. The app features BJJ-specific drills, a mat-side timer, demo videos for each move, and offline voice guidance. Initially, I intended to generate all the demo videos using AI, but this approach failed for the hip escape, a fundamental BJJ movement. The AI model had never witnessed this motion and could not replicate it.\n\nTo overcome this challenge, I decided to film myself executing every movement and then use Wan 2.2 to transfer the motion to a virtual athlete. This required capturing multiple source videos of my hip escapes, sit-throughs, breakfalls, and stretches from various angles at the dojo and at home. Once the videos were filmed, I employed motion transfer techniques using Wan 2.2 to generate the demo videos for each move in the app. The process involved stabilizing the footage, extracting a person mask, and using OpenCV and ffmpeg for post-processing to create the final animated videos.",
  "summary": "TL;DR: My BJJ coach told me daily HIIT was the fastest way to build match stamina, so I built BJJ FLOW — a solo-training app for Brazilian Jiu-Jitsu with BJJ-specific drills, a mat-side timer, demo videos for every move, and fully offline voice guidance. The plan was to generate all the demo videos with AI. It worked for push-ups. It completely failed for the hip escape — the most basic movement…",
  "key_points": [
    "Coach advised daily HIIT sessions for BJJ stamina",
    "Developed BJJ FLOW app with demo videos and timer",
    "Filmed hip escape and other moves for motion transfer"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}