VVenC
VVenC, the Fraunhofer Versatile Video Encoder, is a fast and efficient software H.266/VVC encoder implementation with the following main features:
- Easy to use encoder implementation with five predefined quality/speed presets;
- Perceptual optimization to improve subjective video quality, based on the XPSNR visual model;
- Extensive frame-level and task-based parallelization with very good scaling;
- Frame-level single-pass and two-pass rate control supporting variable bit-rate (VBR) encoding.
See the Wiki-Page for more information:
Build
VVenC uses CMake to describe and manage the build process. A working CMake installation is required to build the software. In the following, the basic build steps are described. Please refer to the Wiki for the description of all build options.
How to build using CMake?
To build using CMake, create a build directory and generate the project:
mkdir build
cd build
cmake .. <build options>
To actually build the project, run the following after completing project generation:
cmake --build .
For multi-configuration projects (e.g. Visual Studio or Xcode) specify --config Release to build the release configuration.
How to build using GNU Make?
On top of the CMake build system, convenience Makefile is provided to simplify the build process. To build using GNU Make please run the following:
make install-release <options>
Other supported build targets include configure, release, debug, relwithdebinfo, test, and clean. Refer to the Wiki for a full list of supported features.
Floating-point contraction and bit-exactness for AArch64
This improves performance but may result in output mismatches between platforms or compiler versions.
By default, VVenC allows the compiler to apply floating-point contraction (e.g. fusing multiply and add operations into fused multiply-add instructions).
To guarantee fully bit-exact output across builds, VVenC must be built with floating-point contraction disabled.
When configuring the build directly with CMake:
mkdir build
cd build
cmake .. -DVVENC_FFP_CONTRACT_OFF=On <other build options>
When using the provided Makefile wrapper:
make install-release ffp-contract-off=On <other options>
Citing
Please use the following citation when referencing VVenC in literature:
@InProceedings{VVenC,
author = {Wieckowski, Adam and Brandenburg, Jens and Hinz, Tobias and Bartnik, Christian and George, Valeri and Hege, Gabriel and Helmrich, Christian and Henkel, Anastasia and Lehmann, Christian and Stoffers, Christian and Zupancic, Ivan and Bross, Benjamin and Marpe, Detlev},
booktitle = {Proc. IEEE International Conference on Multimedia Expo Workshops (ICMEW)},
date = {2021},
title = {VVenC: An Open And Optimized VVC Encoder Implementation},
doi = {10.1109/ICMEW53276.2021.9455944},
pages = {1-2},
}
Contributing
Feel free to contribute. To do so:
- Fork the current-most state of the master branch
- Apply the desired changes
- For non-trivial contributions, add your name to AUTHORS.md
- Create a pull-request to the upstream repository
License
Please see LICENSE.txt file for the terms of use of the contents of this repository.
For more information, please contact: [email protected]
Copyright © 2019-2026, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVenC Authors.
All rights reserved.
VVenC® is a registered trademark of the Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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