Vision Transformer, Diffusion Transformer, and Multimodal Diffusion Transformer Explained

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An educational video tracing the architectural evolution from the Vision Transformer (ViT) to the Diffusion Transformer (DiT) to the Multimodal Diffusion Transformer (MMDiT), explaining how Transformers displaced CNNs as the standard architecture for vision tasks. It covers key mechanisms like adaLN, adaLN-Zero, cross-attention, and FiLM-style conditioning, referencing the original ViT, DiT, MMDiT, and FiLM papers.