Time

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What is time and how do we represent it?

Contents

Some issues:

  • unit: seconds (ISO)
  • time-tags (rather than sample rate)
  • markers (with labels)
  • segments (start and end)
  • absolute vs relative
  • absolute e.g. IEEE 1588

Current practice

OSC

Time is represented as 2 x 32bit <int: seconds> <int: fractions of seconds>

SDIF

Time is represented as 64-bit floats

ISO

ISO 8601 suggests: YYYY-MM-DDThh:mm:ss

SMPTE

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