- 3ality Metadata File Format

### The 3ality metadata file format looks like this (sample line):

TC:05:45:54:08:02 F:004.83 I:004.62 Z:007.80 A:000.91 C:010.28

Note that line 1 of the file will be imported onto frame 1 in 3DE4 (see script "Import 3ality Metadata"), all existing lines in the file will be imported onto the following (sub)frames.

SIP2 metadata packets are fixed-length 61 bytes ASCII strings represented as follows:

Bytes Number | Values | Comments |
---|---|---|

0-2 | "TC:" | Prefix for Timecode |

3-4 | 2 Digit: Timecode hours (0..24) | |

5 | ":" | Timecode seperators |

6-7 | 2 Digit: Timecode minutes (0..59) | |

8 | ":" | Timecode seperators |

9-10 | 2 Digit: Timecode seconds (0..59) | |

11 | ":" | Timecode seperators |

12-13 | 2 Digit: Timecode frames (0..59) | |

14 | ":" | Timecode seperators |

15-16 | 2 Digit: Counter for Metadata packet within video frame (theoretically 0..99, usually 0..7) | |

17-19 | "F:" | Prefix for Focus distance in feet, measured from nodal point. |

20-25 | Focus in fixed point notation: 3 leading digits, decimal point, 2 trailing digits | |

26-28 | "I:" | Prefix for Iris in T- stops. |

29-34 | Focus in fixed point notation: 3 leading digits, decimal point, 2 trailing digits | |

35-37 | "Z:" | Prefix for Zoom as focal length in mm. |

38-43 | Focus in fixed point notation: 3 leading digits, decimal point, 2 trailing digits | |

44-46 | "A:" | Prefix for Interaxial distance (Stereo camera baseline) in inches between nodal points of lenses |

47-52 | Interaxial distance in fixed point notation: 3 leading digits, decimal point, 2 trailing digits | |

53-55 | "C:" | Prefix for Convergence Distance in feet. |

56-61 | Convergence Distance in fixed point notation: 3 leading digits, decimal point, 2 trailing digits |

## Example:

### TC:12:41:37:11:03 F:003.71 I:003.80 Z:008.69 A:002.46 C:008.36

This would mean:

Time: 12 hours, 41 minutes, 37 seconds (early afternoon)

Frame: 11, 3rd Metadata packet within frame

Focus: 3.71 feet

Iris: 3.80 T- stops

Zoom: 8.69 mm

Interaxial Distance: 2.46 inch

Convergence Distance: 8.36 feet