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Equation 4 · Part 1 · How Multimodal Models Actually Handle Video, Audio, and Space

Symbol N_tok

Ntok=HP⋅WPN_{\mathrm{tok}} = \frac{H}{P} \cdot \frac{W}{P}
NtokN_{\mathrm{tok}}

What this part means

NtN_tok is part of the quantity the equation computes from the expression on the right.

Its job in the formula

NtN_tok is part of the quantity the equation computes from the expression on the right.

The passage around this formula

The image-text tokenization scheme has an exact, well-understood cost. An image of height H and width W , cut into square patches of size P , produces Ntok=HP⋅WPN_{\mathrm{tok}} = \frac{H}{P} \cdot \frac{W}{P}. tokens. Video adds a third factor. If a model attends over T sampled frames, each cut into the same spatial grid, and groups PtP_t consecutive frames per temporal patch, the token count becomes

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Learn the underlying idea

A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

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Sources cited in the article section

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