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Re: 64 bit time

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  • Dan Kohn
    5 months late, but here s the 64 bit time standard (supporting either seconds, nanosecond, or attoseconds precision) you re looking for:
    Message 1 of 2 , Sep 7, 2001
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      5 months late, but here's the 64 bit time standard (supporting either
      seconds, nanosecond, or attoseconds precision) you're looking for:

      http://cr.yp.to/proto/tai64.txt


      --- In ISO8601@y..., mik_1000@y... wrote:
      > I am involved in developing a standard for embeding time into a
      > metadata stream to put into video (MPEG2). The standard is called KLV
      > (Key-Length-Value) and its part of the SMPTE (Soc. of Motion Pic. and
      > Television Engineers). We have many formats for inserting the
      > information and I am going to recommend that we investigate this
      > standard for our text version. But I do have question about a
      > different way of representing time. Many O.S.'s (UNIX, Win, etc.)
      > have a "getTime()" function which gets the number of seconds from Jan
      > 1 1970 in UTC. Does the ISO8601 standard include this kind of time
      > reference or is it only a text based standard? We are interested in
      > having a method of including a 64bit count of milliseconds from Jan 1
      > 1970 but I can not find a standard which talks about this kind of
      > time reference. Why use a number like this; to have very quick time
      > access and fast indexing/sorting capabilities. Any help would be
      > appreciated. Thanks.

      - dan
      --
      Dan Kohn <mailto:dan@...>
      <http://www.dankohn.com/> <tel:+1-650-327-2600>
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