On 12/08/2010 02:27 PM, [email protected] wrote:
When audio/video time code is specified if its on a audio track its
called LTC or Longitudinal Time Code and is generally IRIG-B, This
is very uncommon these days as it went out of common use about the
time 1" reel to reel was discontinued.
Most common today on NTSC is VITC or vertical interval time code.
Its encoded as a series of pulses in the vertical blanking interval.
The display is generally called a 'Screen Burner'
LTC (Linear Time Code) and VITC (Video Time Code) is both being part of
SMPTE 12M-1-2008 which is the time-code formats for audio, film and
video recordings.
LTC is NOT IRIG-B, but a distinct code (I just checked the respective
standards to be sure). LTC enumerate picture frames and the rate changes
between 24 frames/s, 25 frames/s, 30/1,001 frames/s or 30 frames/s.
IRIG-B is quite unfit for this.
Cheers,
Magnus
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