Original Mediaivo synthetic fixtures created by the included generator, released under CC0 1.0. No third-party footage, personal images or recorded voices. https://creativecommons.org/publicdomain/zero/1.0/ Executed the repository commandFor and runFfmpeg functions locally. Measurements by FFprobe and filesystem bytes; no production upload, physical device or subjective speech-quality test. Reproduce: node scripts/generate-quality-examples.mjs Exact byte counts can vary with FFmpeg versions.