Kombi

Kombi is focused in describing and performing tasks. These tasks can be used to wrap from executables to arbitrary python implementations. It works by providing an API that simplifies the process of describing nested tasks, passing data across tasks, handling settings for the tasks, dealing with common file system/path operations, splitting the processing and, providing interoperability across different applications bundled with python.

You may find this project useful in situations you need to combine serveral different executables/API's. For instance, during image/video processing, ingestion of files, creating/versioning data (etc).

Kombi can be used through declarative definitions to speed-up prototyping and simplify the maintainability, by reducing the need for writing boilerplate code:

YAML

---
vars:
  prefix: "/tmp"
tasks:
- run: gafferScene
  metadata:
    match.types:
    - png
    match.vars:
      imageType:
      - sequence
  options:
    scene: "{configDirectory}/scene.gfr"
  target: "{prefix}/gafferBlurImageSequence/(newver <parent> as <ver>)/{name}_<ver>.(pad {frame} 6).exr"
  tasks:
  - run: ffmpeg
    options:
      frameRate: 23.976
      sourceColorSpace: bt709
      targetColorSpace: smpte170m
    target: "(dirname {filePath})/{name}.mov"

TOML

[vars]
prefix = "/tmp"

[[tasks]]
run = "gafferScene"
target = "{prefix}/gafferBlurImageSequence/(newver <parent> as <ver>)/{name}_<ver>.(pad {frame} 6).exr"

  [tasks.metadata]
  "match.types" = [
    "png"
  ]

    [tasks.metadata."match.vars"]
    imageType = [
      "sequence"
    ]

  [tasks.options]
  scene = "{configDirectory}/scene.gfr"

  [[tasks.tasks]]
  run = "ffmpeg"
  target = "(dirname {filePath})/{name}.mov"

    [tasks.tasks.options]
    frameRate = 23.976
    sourceColorSpace = "bt709"
    targetColorSpace = "smpte170m"

JSON & HJSON

It supports both Json and Hjson (a user interface for JSON: https://hjson.org)

{
  "vars": {
    "prefix": "/tmp"
  },
  "tasks": [
    {
      "run": "gafferScene",
      "metadata": {
        "match.types": [
          "png"
        ],
        "match.vars": {
          "imageType": [
            "sequence"
          ]
        }
      },
      "options": {
        "scene": "{configDirectory}/scene.gfr"
      },
      "target": "{prefix}/gafferBlurImageSequence/(newver <parent> as <ver>)/{name}_<ver>.(pad {frame} 6).exr",
      "tasks": [
        {
          "run": "ffmpeg",
          "options":{
            "frameRate": 23.976,
            "sourceColorSpace": "bt709",
            "targetColorSpace": "smpte170m"
          },
          "target": "(dirname {filePath})/{name}.mov"
        }
      ]
    }
  ]
}

Additionally you can run Kombi from:

Python

# TODO

Gaffer (node-based)

coming soon

Supported platforms

Linux
Mac OS
windows

Requirement

Python 3.5+/2.7+

Optional Dependencies

Name	Version
Open Image IO (including python bindings/binary tools)	1.7+
Open Color IO (including python bindings)	1.0+
Gaffer	0.53+
PySide	2.0+
FFmpeg (including ffprobe)	3.0+
nuke	9.0+
maya	2016+
deadline	9.0+

Installation

In case you are building the dependencies manually skip the step below:

Install dependencies

Linux

Ubuntu 18.04 (bionic) and derivatives:

pip install PySide2
apt-get install make cmake
apt-get install python-openimageio openimageio-tools
apt-get install python-pyopencolorio 
apt-get install ffmpeg

CentOS/Fedora (requires EPEL):

pip install PySide2
yum install make cmake
yum install python-OpenImageIO OpenImageIO-utils
yum install ffmpeg

windows

Download and unzip the release

# TODO

Building Kombi for development

Details

For windows users please make sure you have the posix tools available on your system. It can be done through Cygwin (During the installation make sure to select cmake and make under Devel category).

Dependencies

Name	Version
CMake	2.8+
Make	3.0+
Pylama	7.0+

Running tests

cd <SRC_LOCATION>
./runtest

Running linters

cd <SRC_LOCATION>
./runlint

Building Kombi

Hint for windows users: The volumes are available under /cygdrive/<volume> in cygwin

cd <SRC_LOCATION>
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=<TARGET_LOCATION> -G "Unix Makefiles" ..
make all install

Running

The launchers are provided inside of the "bin" directory found inside of the installation.

Kombi command-line:

kombi --help

Kombi file picker tool (requires PySide2):

kombi-gui

Licensing

Kombi is free software; you can redistribute it and/or modify it under the terms of the MIT License

kombiHQ/kombi