Open RV

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Overview

Open RV is an image and sequence viewer for VFX and animation artists. Open RV is high-performant, hardware accelerated, and pipeline-friendly.

Open RV Documentation on Read the Docs

Cloning the repository

OpenRV uses submodules to pull some dependencies. When cloning the repository, make sure to do it recursively by using the following command:

git clone --recursive https://github.com/AcademySoftwareFoundation/OpenRV.git

If you cloned the repo without setting the --recursive flag, you can initialize the submodule in another step with the following command:

git submodule update --init --recursive

Building the workstation

Open RV is currently supported on the following operating systems:

• Windows 10 and 11
• macOS
• Linux Centos 7
• Linux Rocky 8
• Linux Rocky 9

Support for other operating systems is on a best effort basis.

Building RV

You can use source rvcmds.sh to add common build aliases into your shell. After the first download following the installation of the required dependencies, use rvbootstrap to set up, configure, and build Open RV with the default options.

After the setup, you can use rvmk (the common build alias) to configure and build Open RV. You can also use rvmkd to configure and build in Debug.

On macOS, if you want to build for a different deployment target than your current operating system, make sure to define the MACOSX_DEPLOYMENT_TARGET environment variable.

Contributor setup

This repository uses a pre-commit to execute formatting before a commit. To install the pre-commit hooks:

pre-commit install

Cleanup

To clean your build directory and restart from a clean slate, use the rvclean common build alias, or delete the _build folder.

Using a Python Virtual Environment

Open RV automatically sets up a Python virtual environment when the user bootstraps (rvbootstrap), builds (rvbuild) or configures (rvcfg) their project. After each of these commands, you should see that the executing instance of the terminal is using a virtual environment with the name .venv.

If this is not the case or if you would like to set up your virtual environment directly, you can run the command rvenv.

Bootstrap

Before first your first Open RV build, you must install some python dependencies.

Common build alias

Use the rvsetup common build alias to run the bootstrap step.

Manually

Please ensure that a virtual environment is running before this command is executed.

python3 -m pip install -r requirements.txt

Note that on Windows, use the following command instead from an MSYS2-MinGW64 shell:

SETUPTOOLS_USE_DISTUTILS=stdlib python3 -m pip install --user --upgrade -r requirements.txt

Blackmagicdesign® Video Output Support (Optional)

Download the Blackmagicdesign® SDK to add Blackmagicdesign® output capability to Open RV (optional): https://www.blackmagicdesign.com/desktopvideo_sdk
Then set RV_DEPS_BMD_DECKLINK_SDK_ZIP_PATH to the path of the downloaded zip file on the rvcfg line.
Example:

rvcfg -DRV_DEPS_BMD_DECKLINK_SDK_ZIP_PATH='<downloads_path>/Blackmagic_DeckLink_SDK_14.1.zip'

NDI® Video Output Support (Optional)

Download and install the NDI® SDK to add NDI® output capability to Open RV (optional): https://ndi.video/
This must be done before the configure step.

Configure

The project uses CMake and requires a configure step before building. It is during the configure step that you provide your Qt package.

From the root of the repository, execute cmake and specify the path to an arbitrary build folder and the path to your QT5 package.

Common build alias

Use the rvcfg (the common build alias) to run the configuration step. You can also use rvcfgd to configure in Debug.

How to enable non free FFmpeg codecs

Legal Notice: Non free FFmpeg codecs are disabled by default. Please check with your legal department whether you have the proper licenses and rights to use these codecs. ASWF is not responsible for any unlicensed use of these codecs.

The RV_FFMPEG_NON_FREE_DECODERS_TO_ENABLE and RV_FFMPEG_NON_FREE_ENCODERS_TO_ENABLE can optionally be specified at configure time to enable non free FFmpeg decoders and encoders respectively.

Example:

rvcfg -DRV_FFMPEG_NON_FREE_DECODERS_TO_ENABLE="aac;hevc" -DRV_FFMPEG_NON_FREE_ENCODERS_TO_ENABLE="aac"

Manually

Windows

On Windows, you must specify the path to Strawberry perl for the OpenSSL build.

cmake -B _build -G "Visual Studio 16 2019" -A x64 -DCMAKE_BUILD_TYPE=Release -DRV_DEPS_WIN_PERL_ROOT=/c/Strawberry/perl/bin -DRV_DEPS_QT5_LOCATION=/c/path/to/your/Qt/Root

Linux and MacOS

cmake -B _build -DCMAKE_BUILD_TYPE=Release -DRV_DEPS_QT5_LOCATION=/Path/To/Your/Qt5/Root

Tips

3rd Parties Outside Of Repository

To keep your third-party builds between build cleanups, set -DRV_DEPS_BASE_DIR=/path/to/third/party.

Build

Invoke the previously specified generator tool using cmake to run the build step (recommended).

Common build alias

Use the rvbuild (the common build alias) to run the build step. You can also use rvbuildd to build in Debug.

Manually

cmake --build _build --config Release -v --parallel=8 --target main_executable

Test

Invoke the tests using ctest.

Common build alias

Use the rvtest common build alias to start the tests.

Manually

ctest --test-dir _build

Tips

Run The Tests In Parallel

You can run the test in parallel by specifying --parallel X, where X is the number of tests to run in parallel.

Run A Subset Of The Tests

You can apply a filter with the -R flag to specify a regex.

Run The Tests Verbose

You can run the tests with extra verbosity with the flag --extra-verbose.

Important: You cannot use --extra-verbose with --parallel. It's one or the other, not both.

Run

Once the build ends, you can execute (or debug!) Open RV from the _build directory.

The path to the build is _build/stage/app. It contains everything required to have the proper debug symbols.

Install

Invoke the install step using cmake. The install step prepares Open RV for packaging by building a copy of Open RV in the _install folder.

The build system allows you to prepackage Open RV using cmake's install command. It will strip debug symbols if required.

Then, it's up to you to either sign or package the result, or to do both. It should contain the minimum required to have a functional Open RV.

Common build alias

Use the rvinst common build alias to install OpenRV.

Manually

cmake --install _build --prefix _install

See THIRD-PARTY.md for license information about portions of Open RV that have been imported from other projects.