How to convert .vdata files to .mp4 format.
Converting Vaulty Vault Files directly to MPEG-4 Videos (.vdata to .mp4 conversion) is, per se, not possible, but also not really necessary. VDATA files typically contain encoded image or video files.
In case your VDATA file contains any video data, simply rename the file's suffix from VDATA to MP4, and open it using any multimedia player.
The database currently does not contain any vdata software converter.