Ripper6

Ripper6 is a program that extracts files from within other files. The most common use is searching the data files from games and demos, so that various assets like music or sound effects can be extracted and saved into separate files.

Use

ripper6 filename

This will search filename and if any matches are found, they will be saved numerically in the current directory, starting from 0000.xyz (where xyz is based on the file type as per the table below.)

Download

• Windows: ripper6-0.1a-win32.zip
• Linux/Source: ripper6-0.1.tar.gz
• GitHub page

Supported file formats

The following file formats are recognised and extracted:

Each format has its size calculated by examining the data to ensure no extra trailing bytes are left at the end.

Notes

Most of the file formats are fully documented on the ModdingWiki.

The name is based on the excellent Ripper 5 utility, released for the MS-DOS platform in 1995 by JΘNas.

Tips

Many DOS demos use custom compression, but running them through DOSBox and then doing a binary memory dump will give you the decompressed data that can be run through Ripper6.

1. Load a version of DOSBox with the debugger enabled
2. Run the demo, and press the key combination you set to break into the debugger. You may have to break into the debugger before the demo has finished loading, as many modify the in-memory copy of their music files (updating sample pointers to point to allocated memory, etc.) which can render the files invalid (and Ripper6 will not recognise them.)
3. Dump the memory - for real mode demos that only use conventional memory, MEMDUMPBIN 0:0 100000 will grab the lower 1MB.
4. Examine it: ripper6 MEMDUMP.BIN