BRSAR (File Format)

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This page describes the BRSAR (Binary Revolution Sound ARchive) format used to store sound effects and some music. It is used in Mario Kart Wii, Super Smash Bros. Brawl, The Legend of Zelda: Skyward Sword and other games.

File Header

The file begins with a header of size 0x40 bytes.

Offset	Size	Description
0x00	0x04	File identifier: RSAR in ASCII
0x04	0x02	Byte order mark. 0xFEFF is Big Endian, 0xFFFE is Little Endian
0x06	0x02	VersionMajor and VersionMinor flags from BrawlBox. Mario Kart Wii uses 01 04. HomeButtonSe.brsar (used for the Home Menu) uses 01 01. Unknown if it affects anything in-game.
0x08	0x04	Length of the file (in bytes).
0x0C	0x02	Length of the header (in bytes) (always 0x0040)
0x0E	0x02	Unknown (usually 0x0003)
0x10	0x04	Offset to the SYMB section
0x14	0x04	Size of the SYMB section
0x18	0x04	Offset to the INFO section
0x1C	0x04	Size of the INFO section
0x20	0x04	Offset to the FILE section
0x24	0x04	Size of the FILE section
0x28	0x18	Padding (0x00)
End of header

Sections

Unless otherwise noted, offsets in each section are relative to the start of the section block.

SYMB

The SYMB section consists of an FST-like data structure. It contains 3 header-less subsections.

Offset	Size	Description
0x00	0x04	File Identifier, SYMB in ASCII
0x04	0x04	Size of the SYMB section
0x08	0x04	Unknown
0x0C	0x04	Number of entries in the SYMB table
End of header