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Jamie Hardt
2022-11-23 22:31:42 -08:00
parent 8fcc9787f6
commit b2323a126f
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docs/source/metadata_scopes/bext.rst
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@@ -9,20 +9,25 @@ which includes a 256-character free text descrption, creating entity identifier
recording application or equipment), the date and time of recording and a time reference for
timecode synchronization.
The `coding_history` is designed to contain a record of every conversion performed on the audio
The :py:attr:`coding_history` is designed to contain a record of every conversion performed on the audio
file.
In this example (from a Sound Devices 702T) the bext metadata contains scene/take slating
information in the `description`. Here also the `originator_ref` is a serial number conforming
information in the :py:attr:`description`. Here also the :py:attr:`originator_ref` is a serial number conforming
to EBU Rec 99.
If the bext metadata conforms to EBU 3285 v1, it will contain the WAV's 32 or 64 byte SMPTE
330M UMID. The 32-byte version of the UMID is usually just a random number, while the 64-byte
If the bext metadata conforms to `EBU 3285 v1`_, it will contain the WAV's 32 or 64 byte `SMPTE
ST 330 UMID`_. The 32-byte version of the UMID is usually just a random number, while the 64-byte
UMID will also have information on the recording date and time, recording equipment and entity,
and geolocation data.
If the bext metadata conforms to EBU 3285 v2, it will hold precomputed program loudness values
as described by EBU Rec 128.
If the bext metadata conforms to `EBU 3285 v2`_, it will hold precomputed program loudness values
as described by `EBU Rec 128`_.
.. _EBU 3285 v1: https://tech.ebu.ch/publications/tech3285s1
.. _SMPTE ST 330 UMID: https://standards.globalspec.com/std/1396751/smpte-st-330
.. _EBU 3285 v2: https://tech.ebu.ch/publications/tech3285s2
.. _EBU Rec 128: https://tech.ebu.ch/publications/r128
.. code:: python