QuietTake dubbing example: English to Mandarin Chinese
Source: Artemis Media Resource-Interview Soundbites
Speaker: Jim Bridenstine. Credit: NASA. Published: 2019-12-09.
https://images.nasa.gov/details/Artemis%20Media%20Resource-Interview%20Soundbites
NASA media usage guidelines: https://www.nasa.gov/nasa-brand-center/images-and-media/
NASA and the speaker do not endorse QuietTake or this demonstration.

An 11.5-second excerpt, using the same interview as the voice changer example.
Original English audio was converted to AAC for browser playback. Video packets
are identical in original.mp4 and zh.mp4. zh.mp4 replaces the original audio
with a synthetic Mandarin voice; it is not the speaker's real or cloned voice.
The transcript was reviewed and the translation corrected before generation.
The result uses QuietTake's dubbing, segment timing and MP4 export functions.
Both files passed complete FFmpeg decode; the result retains the input timeline.
This is a selected example, not a guarantee of accuracy for other recordings.
Metadata, final script and checksums: src/lib/dub-demo.json
Recorded test output: verified/nasa, 10 September 2026.