unvivtool is a modern VIV decoder/encoder

Purported VIV/BIG archives sometimes contain faulty or manipulated header information. unvivtool is designed to validate and recover data as much as possible.

Compatibility: Many Electronic Arts games, including most Need For Speed versions

Formats: The formats are called BIGF, BIGH, and BIG4 (equals first 4 bytes). Typical file extensions are .VIV and .BIG.

Features:

• decode and encode archive
• validate archive
• decode entire archive at once
• retrieve a single file from archive (by index or filename)
• list archive contents without writing to disk (dry run)
• encode files in set order
• fully support UTF8-filenames in archive
• fully support non-printable filenames in archive (represent as Base16)
• decode/encode with set fixed directory entry length

Also available as Python extension module from https://github.com/bfut/unvivtool