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Foundation Lab

Video World Models

Merges generative modeling with dynamics modeling

Concept 97 of 100Generative ModelsPhase 13
#97VideoWMGenerative Models
key equationp_\theta(x_{1:T}|c) = \prod_t p_\theta(x_t | x_{<t}, c)

Selected Foundation Object

Keep the equation fixed; move through the evidence.

Concept 97 of 100VideoWMGenerative Models / Phase 13: Cutting-edge 2024-2025 research
Current question

Not just "video generation" but learned physics engine

p_\theta(x_{1:T}|c) = \prod_t p_\theta(x_t | x_{<t}, c)
PredictionCommit before the demo.

Ask what should change when the equation is manipulated, then let the visualization test that expectation.

EvidenceCompare local witness and source.

Use the runnable panel, the key equation, and canonical papers as separate forms of evidence for the same object.

InvariantName what survives notation changes.

The useful learning product is the reusable mechanism you can carry into another model, paper, or engineering tradeoff.

Next moveContinue through the atlas.

Use prerequisites, dependents, and semantic links to repair the next gap without leaving the object behind.

Why It Matters for Modern Models

  • Merges generative modeling with dynamics modeling
  • Precursor to general planning/agents
  • Sora shows emergence of 3D consistency, object permanence

What Tutorials Skip

What is still poorly explained in textbooks and papers:

  • Not just "video generation" but learned physics engine
  • Emergent properties: camera control, object tracking, causality
  • Can imagine "what happens if" for planning

Interactive Visualization

Core Math (Optional Deep Dive)

If you want intuition first, start with the key equation and the visualization. Come back here for the full walkthrough.

Key Equation
pθ(x1:Tc)=tpθ(xtx<t,c)p_\theta(x_{1:T}|c) = \prod_t p_\theta(x_t | x_{<t}, c)

Video as learned dynamics. Autoregressive:

pθ(x1:Tc)=t=1Tpθ(xtx<t,c)p_\theta(x_{1:T}|c) = \prod_{t=1}^T p_\theta(x_t | x_{<t}, c)

Diffusion over latent zz:

minθEt,ϵ[ϵϵθ(zt,t,c)2]\min_\theta \mathbb{E}_{t,\epsilon}[\|\epsilon - \epsilon_\theta(z_t, t, c)\|^2]

Video generators = learned simulators of physical world.

Canonical Papers

Video generation models as world simulators

OpenAI2024OpenAI
Read paper →

Connections

Prerequisites

Next Moves

Choose the next question to carry this object forward.