01
30%
n = 380, uniform sample
Most short-form video carries no usable speech
of sampled videos contain speech or on-screen text worth processing
Catalogue music, reused viral audio and silent photo carousels account for the rest. Classifying this before transcription is what makes full-population coverage affordable.
02
6%
n = 603, uniform US sample
Discourse worth measuring is a thin slice of the platform
of videos fall inside the monetisable topical scope
Politics, economics, work, technology, health and social issues. Entertainment, lip-sync and performance dominate the platform by volume and are excluded by design.
03
28%
n = 500, with live controls
Platform-native labels are precise but miss most political speech
of a political-by-construction corpus carried a political platform label
What the platform labels as political is genuinely political, so the field is useful for inclusion. It is useless for exclusion: commentary shaped like a rant or a late-night segment is filed under entertainment.
04
26%
n = 500, controls interleaved
The record disappears, which is why history cannot be backfilled
of a 2023–24 political corpus no longer existed by 2026
Live positive controls separate deletion from blocking. A labeled series of public discourse has to be collected as it happens; it cannot be reconstructed later at any price.