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module  pixeltable.functions.audio

Pixeltable UDFs for AudioType.

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udf  get_metadata()

Signature
get_metadata(audio: pxt.Audio) -> pxt.Json
Gets various metadata associated with an audio file and returns it as a dictionary. Parameters:
  • audio (pxt.Audio): The audio to get metadata for.
Returns:
  • pxt.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()