%% You should probably cite draft-ietf-avt-smpte-rtp instead of this I-D.
@techreport{singer-smpte-rtp-01,
    number =    {draft-singer-smpte-rtp-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-singer-smpte-rtp/01/},
    author =    {David Singer},
    title =     {{Associating SMPTE time-codes with RTP streams}},
    pagetotal = 8,
    year =      2005,
    month =     jun,
    day =       1,
    abstract =  {This document describes a mechanism for associating SMPTE time-codes with media streams, in a way that is independent of the RTP payload format of the media stream itself.},
}