BRSAR (File Format)

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This page describes the BRSAR 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. All lengths are in hexadecimal.

Offset	Size	Description
0x0	0x4	File identifier: "RSAR" in ASCII
0x4	0x2	Byte order mark. 0xFEFF is Big Endian, 0xFFFE is Little Endian.
0x6	0x2	"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.
0x8	0x4	Length of the file (in bytes).
0xC	0x2	Length of the header (in bytes) (always 0x0040)
0xE	0x2	Unknown (usually 0x0003)
0x10	0x4	Offset to the SYMB section
0x14	0x4	Size of the SYMB section
0x18	0x4	Offset to the INFO section
0x1C	0x4	Size of the INFO section
0x20	0x4	Offset to the FILE section
0x24	0x4	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
0x0	0x4	File Identifier, SYMB in ASCII
0x4	0x4	Size of the SYMB section
0x8	0x4	Unknown
0x0C	0x4	Number of entries in the SYMB table
End of header