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IMPORTANT

THIS PROJECT IS DEPRECATED BY THE MLT TEAM AND NO LONGER MAINTAINED.

The QtWebKit library it uses was deprecated by the Qt project since 2015. We are aware of the GitHub project to keep the library alive. However, we no longer want to maintain this sub-project due to minimal resources and lack of contribution. Also, the integration of QtWebKit into Qt 6 is uncertain.

Overview

WebVfx is a video effects library that allows effects to be implemented using WebKit HTML or Qt QML.

Prerequisites

You will need Qt installed (5.2 or later recommended). Qt includes QtWebKit and QML, but since v5.6, you need to build QtWebKit yourself. You may also want to build Qt3D - 3D extensions to QML. WebVfx includes support for Qt3D, and Qt include Qt3D as of v5.6.

WebVfx includes an MLT service that exposes producers, filters and transitions implemented in WebVfx. Install MLT Framework 0.7.2 or greater to build the plugin.

Building

In the webvfx directory run qmake -r PREFIX=/usr/local and then make install. PREFIX determines where WebVfx will be installed. If MLT is installed in a non-standard location, you may need to set the PKG_CONFIG_PATH environment variable to where its pkgconfig file lives, e.g. PKG_CONFIG_PATH=/usr/local/lib/pkgconfig.

The MLT melt command will not work with WebVfx on Windows or macOS because the Qt event loop must run on the main thread. If you set MLT_SOURCE to the root of your MLT source code directory, then a qmelt executable will be installed which behaves the same as melt but works with WebVfx on Windows or macOS. e.g. qmake -r PREFIX=/usr/local MLT_SOURCE=~/Projects/mlt. The MLT source is available as a git submodule to make this more convenient. If you checkout the git submodule, then it is detected and there is no need to set MLT_SOURCE.

make doxydoc to generate the documentation using Doxygen. You can also make uninstall, make clean and make distclean.

Demos

See the documentation for examples.

License

Copyright (c) 2011 Hewlett-Packard Development Company, L.P. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

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DEPRECATED - Video effects engine based on web technologies.

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