VIV (also known as BIG or BIGF) is an archive format found in Electronic Arts games; it has been observed in the NBA Live, Need For Speed, and Harry Potter games (among others), used to contain files such as graphics in FSH format. It appears the files are stored in an uncompressed manner. This format was used starting around 1998.
VIV files start with bytes
42 49 47 46 (hex), spelling "BIGF" in ASCII.
- VIV Files, from the NBA Live Series Center Wiki