A VPT preset stores the whole live state of layers and sources, not a rendered image

VPT does not save work with File-Save; it saves numbered presets. A preset is a snapshot of the current VPT state — layer positions, source assignments, transparency, masks, playback parameters — captured as configuration data, not as a rendered video or image, because VPT renders the output live. Recalling a preset restores that state instantly, and transitions between presets are computed by interpolating between the two states. Presets stay tiny regardless of media size, and changing a source file updates every preset that references it. Preset 0 is a reserved temporary slot, so user presets start at 1; saving over an existing number overwrites it unless you switch the store button to ‘storenext’, which saves to the next free slot.

Examples

Store preset 1 with a layer on the left wall, preset 2 with a layer on the right wall, then recall preset 1 mid-show to jump back to the first mapping.

Assessment

Explain why VPT uses presets instead of File-Save and what a preset does and does not store. How do you avoid overwriting an existing preset when saving a new one?