BNSF

File Format
Name	BNSF
Ontology	Electronic File Formats Audio and Music BNSF
Extension(s)	.bnsf, .is14

BNSF (IS14, G.722.1) is an audio format used in some computer/video games. There are variants with different subcodecs.

Identification

The first four bytes are 42 4E 53 46 (spellling BNSF in ASCII), and bytes 08-0B are 49 53 31 34 (spelling IS14). The bytes in between can vary.

Sample files

• A sample is here

Links

• Guide to Encoding .bnsf / .is14 audio files (converting .wav back to .bnsf / .is14)
• BNSF IS14 format "failed opening"
• Game File Analysis (audio)