audio

pixeltable.functions.audio

Pixeltable UDFs for AudioType.

get_metadata

get_metadata(audio: Audio) -> Json

Gets various metadata associated with an audio file and returns it as a dictionary.

Parameters:

• audio (Audio) –

  The audio to get metadata for.

Returns:

• Json –

  A dict such as the following:

  {
      'size': 2568827,
      'streams': [
          {
              'type': 'audio',
              'frames': 0,
              'duration': 2646000,
              'metadata': {},
              'time_base': 2.2675736961451248e-05,
              'codec_context': {
                  'name': 'flac',
                  'profile': None,
                  'channels': 1,
                  'codec_tag': '\x00\x00\x00\x00',
              },
              'duration_seconds': 60.0,
          }
      ],
      'bit_rate': 342510,
      'metadata': {'encoder': 'Lavf61.1.100'},
      'bit_exact': False,
  }
  

Examples:

Extract metadata for files in the audio_col column of the table tbl:

>>> tbl.select(tbl.audio_col.get_metadata()).collect()