opening.bnr (File Format)/Wii
opening.bnr is a file found in all Wii disks which is the first file read when loading a game. It contains banner and sound for when loading a game.
File Format
Header
The file starts with an IMET header. It has the following structure:
| Offset | Type | Description |
|---|---|---|
| 0x00 | Byte[0x40] | Padding. Always 0. |
| 0x40 | Char[4] | File magic. Always IMET in ASCII. |
| 0x44 | UInt32 | U8 offset. |
| 0x48 | UInt32 | Number of files in the U8. |
| 0x4C | UInt32 | banner.bin size in bytes. |
| 0x50 | UInt32 | icon.bin size in bytes. |
| 0x54 | UInt32 | sound.bin size in bytes. |
| 0x58 | UInt32 | Unknown. |
| 0x5C | Char[0x54] | Japanese channel name stored as UTF-16. |
| 0xB0 | Char[0x54] | English channel name stored as UTF-16. |
| 0x104 | Char[0x54] | German channel name stored as UTF-16. |
| 0x158 | Char[0x54] | French channel name stored as UTF-16. |
| 0x1AC | Char[0x54] | Spanish channel name stored as UTF-16. |
| 0x200 | Char[0x54] | Italian channel name stored as UTF-16. |
| 0x254 | Char[0x54] | Dutch channel name stored as UTF-16. |
| 0x2A8 | Byte[0x348] | Padding. Always 0. |
| 0x5F0 | Byte[0x10] | MD5 checksum of file data (0x0000 – 0x5EFF). |
U8 File
After the IMET header comes an U8 file. This file contains three different files:
| File name | Description |
|---|---|
| meta/banner.bin | Contains the images and animation displayed when the channel is selected. |
| meta/icon.bin | Contains the images and animation displayed when the channel is in the menu. |
| meta/sound.bin | Contains the audio that is played when the channel is selected. |
All files inside the U8 starts with the following structure:
| Offset | Type | Description |
|---|---|---|
| 0x00 | Char[4] | Magic. Always IMD5 in ASCII. |
| 0x04 | UInt32 | File size in bytes, excluding this structure. |
| 0x08 | Byte[8] | Padding. |
| 0x10 | Byte[0x10] | MD5 checksum of the file data following this header. |
All files may be compressed using LZ77. If so, the first 4 bytes will be "LZ77". Note that the actual file starts after the IMD5 header, so if the file is compressed, bytes 0x20 – 0x23 will be "LZ77".
banner.bin
The banner.bin file is a U8 file containing layout data. It contains the folder arc, which contains anim, blyt and timg which stores BRLAN, BRLYT respectively TPL files. The BRLYT file is called banner.brlyt.
icon.bin
The icon.bin file is a U8 file containing layout data. It contains the folder arc, which contains anim, blyt and timg which stores BRLAN, BRLYT respectively TPL files. The BRLYT file is called icon.brlyt.
sound.bin
The sound.bin file can either be a WAV, an AIFF or a BNS. If the file is a WAV or an AIFF, it must contain 16-bit uncompressed PCM data.
Tools
The following tools can handle opening.bnr files:
- (none)
