wavinfo

The wavinfo package allows you to probe WAVE files and extract extended metadata, with an emphasis on production metadata.

wavinfo reads:

• Broadcast-WAVE metadata, compliant with EBU Tech 3285v2 (2011), including embedded program loudness and coding history, if extant. This also includes the SMPTE 330M UMID Unique Materials Identifier.
• iXML production recorder metadata, including project, scene, and take tags, recorder notes and file family information.
• Most of the common RIFF INFO metadata fields.
• The wav format is also parsed, so you can access the basic sample rate and channel count information.

In progress:

• iXML STEINBERG sound library attributes.
• Pro Tools embedded regions.

Demonstration

The entry point for wavinfo is the WavInfoReader class.

from wavinfo import WavInfoReader

path = '../tests/test_files/A101_1.WAV'

info = WavInfoReader(path)

Basic WAV Data

The length of the file in frames (interleaved samples) and bytes is available, as is the contents of the format chunk.

(info.data.frame_count, info.data.byte_count)
>>> (240239, 1441434)
(info.fmt.sample_rate, info.fmt.channel_count, info.fmt.block_align, info.fmt.bits_per_sample)
>>> (48000, 2, 6, 24)

Broadcast WAV Extension

print(info.bext.description)
print("----------")
print("Originator:", info.bext.originator)
print("Originator Ref:", info.bext.originator_ref)
print("Originator Date:", info.bext.originator_date)
print("Originator Time:", info.bext.originator_time)
print("Time Reference:", info.bext.time_reference)
print(info.bext.coding_history)

sSPEED=023.976-ND
sTAKE=1
sUBITS=$12311801
sSWVER=2.67
sPROJECT=BMH
sSCENE=A101
sFILENAME=A101_1.WAV
sTAPE=18Y12M31
sTRK1=MKH516 A
sTRK2=Boom
sNOTE=

----------
Originator: Sound Dev: 702T S#GR1112089007
Originator Ref: USSDVGR1112089007124001008206301
Originator Date: 2018-12-31
Originator Time: 12:40:00
Time Reference: 2190940753
A=PCM,F=48000,W=24,M=stereo,R=48000,T=2 Ch

iXML Production Recorder Metadata

print("iXML Project:", info.ixml.project)
print("iXML Scene:", info.ixml.scene)
print("iXML Take:", info.ixml.take)
print("iXML Tape:", info.ixml.tape)
print("iXML File Family Name:", info.ixml.family_name)
print("iXML File Family UID:", info.ixml.family_uid)

iXML Project: BMH
iXML Scene: A101
iXML Take: 1
iXML Tape: 18Y12M31
iXML File Family Name: None
iXML File Family UID: USSDVGR1112089007124001008206300