Extract Audio Metadata

Category: Forensics

Status: Registered and callable in the CyberChef 11.3.0 compatibility inventory.

Input / output: ArrayBuffer → JSON

Background: https://wikipedia.org/wiki/Audio_file_format

What it does

Extract common audio metadata across MP3 (ID3v2/ID3v1/GEOB), WAV/BWF/BW64 (INFO/bext/iXML/axml), FLAC (Vorbis Comment/Picture), OGG (Vorbis/OpusTags), AAC (ADTS), AC3 (Dolby Digital), WMA (ASF), plus best-effort MP4/M4A and AIFF scanning. Outputs normalized JSON.

Note

Status here means the operation name is implemented and callable. It does not by itself promise byte-for-byte parity for every upstream option. See Compatibility and current status for the verified scope and known boundaries.

Arguments and options

Arguments are positional. Keep their order when using bake() or Pipeline.then().

Index	Name	UI type	PyChef default	Accepted values / format
`0`	Filename (optional)	`string`	`''`	`''`
`1`	Max embedded text bytes (iXML/axml/etc)	`number`	`'1024 * 512'`	A Python integer or floating-point value

Recipe template

Important

This is a call template built from the documented defaults. Replace placeholder values such as empty keys, paths, patterns, or lookup data before running it.

from pychef import bake

input_value = b"example"
args = ['', '1024 * 512']
result = bake(input_value, [{"op": 'Extract Audio Metadata', "args": args}])
print(result)

Pipeline example

from pychef import Pipeline

args = ['', '1024 * 512']
transform = Pipeline().then('Extract Audio Metadata', *args)
result = transform(b"example")

Direct call

pychef.ops.run_operation runs any registered operation as a plain function, under the active ExecutionPolicy (safe defaults, no network):

from pychef.ops import run_operation

args = ['', '1024 * 512']
result = run_operation('Extract Audio Metadata', b"example", args=args)

Common operations also have typed helpers in Direct operations.

Low-level operation module

Warning

The module below is an internal implementation detail. It applies no execution policy, resource limits, or error sanitization; prefer bake(), Pipeline, or pychef.ops for application code.

The registered entry point lives in pychef.operations.by_operation.extract_audio_metadata. Direct calls receive the input value and a positional argument tuple:

from pychef.operations.by_operation.extract_audio_metadata import run

result = run(b"example", tuple(['', '1024 * 512']))

pychef.operations.by_operation.extract_audio_metadata.run(value, args)

Run this operation using its shared internal implementation.

Parameters:

value (str | bytes)
args (Sequence[Any])

Return type:

str | bytes