Graphics Reference
In-Depth Information
• color space
• lens size/type—zoom or prime or specialty
• lens calibration i le
• shutter angle
• focal length
• focus
• iris
• zoom
• convergence
• background divergence
• foreground divergence
• nodal point LE and RE
• interaxial/interocular
• entry pupil LE and RE
Staying Connected
Some post processes (for example, transcoding) require that video essence
data and metadata be de-coupled. This de-coupling occurs because either
the destination i le type or format cannot or does not understand and
integrate metadata from the source i le. Or if it does, integration is spotty
and can be prone to human and technical error. This split increases risk
(and potential cost) by increasing the chance that metadata will go missing,
get corrupted or otherwise get out of lockstep with the video essence data.
When this happens, the production will bear the i nancial and creative cost
of recreating metadata, or re-creating the elements. Whenever metadata
splits from essence data there is cause for concern unless there is a foolproof
system in place for recombining the essence data with metadata after
the split.
Your show's service providers need to treat your show's metadata with the
same attention and care that they treat your image data. If your prospective
post/vfx service providers cannot or will not help create a metadata workl ow
that works for your show, i nd another vendor.
Metadata Awareness Checklist
Here are some of the questions you can ask prospective service providers:
1. What metadata did you track in your last project? Type, format, frequency,
linkages to image data?
2. Why did you decide to track that particular group/set of metadata?
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