How to mosaic a video: full-clip vs timed intervals
When to use one fixed mosaic region for the whole video versus multiple timed intervals — for subtitles, plates, faces, and other private spots.
A single full-clip region is best for logos, corner badges, or anything visible the whole time.
Timed intervals fit content that only appears for a few seconds: set start/end for each range and place each box independently.
Larger mosaic blocks hide more detail; preview before exporting.
Everything runs in your browser, so media stays on your device.