Convert THUMBDATA33 to MP4

Converting Android Thumbnail Database Format directly to MPEG-4 Videos (.thumbdata33 to .mp4 conversion) is not possible. 

THUMBDATA33 files, found on SD cards of Android devices, neither contain documents, nor any other multimedia data, which is why it is not possible to extract, export or convert these files to any other format, including MP4.

Simply put, it is impossible to convert THUMBDATA33 to MP4 directly.
Thus, there is no so-called thumbdata33 to mp4 converter or a free online thumbdata33 to mp4 converter to be found.