Metadata - 3D Postproduction: Stereoscopic Workflows and Techniques - page 236

Metadata Scenarios
Different shows have different metadata requirements. Think of the vastly
different metadata requirements for the following shows:
• Scenario #1 - Single Rig - Beamsplitter-Type, 5K Cameras, using top-quality
Zooms as Variable Primes; one or two hero visual effects shots, but mostly
shot “in-camera.”
• Scenario#2 - Multi-Rig (3+ Rigs) Beamsplitter-Type, 5K Cameras, using
top-quality Zooms and Primes; several hero visual effects shots. Some
second unit.
• Scenario#3 - (5+ Rigs) Beamsplitter-Type and Side-by-Side Type, 5K
Cameras, using top-quality Zooms and Primes; many hero visual effects
shots. Multiple shooting units.
Metadata Categories
Metadata can be categorized according to:
1. How It Links to Image Data
• Embedded into image i les
• A “sidecar” i le linked to an image i le
• Stream of data with information to sync metadata with image data
(e.g., timecode)
2. How It Changes pver Time
• Static
• Dynamic
3. Where It Comes From:
• Raw data generated by the various production tools
• Calculations based on raw data
• Human and/or machine analysis of raw data and/or calculations
Examples of 3D Metadata
Here are some common metadata items in 3D Production, each with its own
specii c units, frequency of data capture, error checking and other factors:
• i le and directory naming convention for metadata/image data
• timecode
• frame rate(s)
• i le format(s)
• i le size
• resolution