LabLib

Generate intermediate sequences for VFX processing using OIIO and FFMPEG!

This module aims to help by providing helper classes and functions to:

• Get basic info from videos and images using iinfo and ffprobe as a fallback.
• Read and parse effect json outputted by AYON/Openpype for pipeline automation.
• Create a custom OCIO config file for direct use.
• Create OIIO and FFMPEG matrix values to be used in filters for repositioning.
• Create correctly formed OIIO commandline strings automatically.
• Render out frames with Color and Repositioning baked in using oiiotool

DISCLAIMER This is still a wip, and it's currently missing a lot of functionality. Use at your own risk!

Instructions

The core functionality relies on using Processors and Operators to compute the correct commandline parameters.

Operators are single operation classes that hold your operation parameters (translation, luts, cdls etc.)

Processors (usually classes such as ColorTransformProcessor) compute Operators chains together. They can be fed ordered lists of dicts (with same name attributes as Operator classes) or ordered lists of Operators objects, or one at a time for secondary processing between the chained operations. On compute they return their relevant section of commandline flags to be passed to oiio.

Renderers take care of returning the fully formed commanline command and executing it.

Please see the sample tests/test_run.py for an usage example.

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Testing

Please see tests/test_run.py globals for dependent binary locations.

• poetry install
• poetry run pytest

Features (Planned and Done)

• Repo Processor
• Color Processor
• Slate Processor
• Burnins Processor
• FFMPEG final compression to format
• Settings and presets from json
• Commandline parser
• QT gui (will probably never happen)

Dev Features

• Type Hints
• Docstrings
• Documentation
• Tests (probably will never happen)

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Required Dependencies

• Python >= 3.7 (but keep in mind that otio and ocio wheels need to be built for >= 3.11)
• Download OIIO
• Download FFMPEG
• Download OCIO Configs
• Install PyOpenColorIO: pip install opencolorio
• Install OpenTimelineIO: pip install opentimelineio
• Install Selenium: pip install selenium

or even better just pip install requirements.txt in your own virtual environment!