93debab7c4
- The `fmt` class member, which was of type AVFormat*, was really just an unnecessary copy of `(AVFormatContext*)oc->oformat`. But we were ASSIGNING into its members, which we were definitely not supposed to be doing. (And in recent FFmpegs, now that `AVFormat` has been `const`d, we can't.) It's gone; now we just use `oc->oformat` anywhere we used to access `fmt`. - The preprocessor macro to allocate a new _stream_ was a mess of cross purposes: It did allocate a stream, but then it also allocated a new AvCodecCtx on newer FFmpeg releases. Worse (and always galling to me), it proceeded to assign to a variable that WASN'T passed in to the macro, just taking it on faith that it would only be used where that variable was defined. That's just... ugh. So I broke it apart into two steps (stream creation and context allocation), realized the stream creation code was the same for all ffmpeg versions and didn't need to be a macro at all, and now a 4-parameter, 6-line magical macro has been replaced with a simple, zero-side-effect one-liner. - I also cleaned up the add_video_stream() code to be more like the add_audio_stream() code, since they were bad-different for no discernible reason.
OpenShot Video Library (libopenshot) is a free, open-source C++ library dedicated to delivering high quality video editing, animation, and playback solutions to the world.
Build Status
Features
- Cross-Platform (Linux, Mac, and Windows)
- Multi-Layer Compositing
- Video and Audio Effects (Chroma Key, Color Adjustment, Grayscale, etc…)
- Animation Curves (Bézier, Linear, Constant)
- Time Mapping (Curve-based Slow Down, Speed Up, Reverse)
- Audio Mixing & Resampling (Curve-based)
- Audio Plug-ins (VST & AU)
- Audio Drivers (ASIO, WASAPI, DirectSound, CoreAudio, iPhone Audio, ALSA, JACK, and Android)
- Telecine and Inverse Telecine (Film to TV, TV to Film)
- Frame Rate Conversions
- Multi-Processor Support (Performance)
- Python and Ruby Bindings (All Features Supported)
- Qt Video Player Included (Ability to display video on any QWidget)
- Unit Tests (Stability)
- All FFmpeg Formats and Codecs Supported (Images, Videos, and Audio files)
- Full Documentation with Examples (Doxygen Generated)
Install
Detailed instructions for building libopenshot and libopenshot-audio for
each OS. These instructions are also available in the /docs/ source folder.
Hardware Acceleration
OpenShot now supports experimental hardware acceleration, both for encoding and decoding videos. When enabled, this can either speed up those operations or slow them down, depending on the power and features supported by your graphics card.
Please see doc/HW-ACCEL.md for more information.
Documentation
Beautiful HTML documentation can be generated using Doxygen.
make doc
(Also available online: http://openshot.org/files/libopenshot/)
Developers
Are you interested in becoming more involved in the development of OpenShot? Build exciting new features, fix bugs, make friends, and become a hero! Please read the step-by-step instructions for getting source code, configuring dependencies, and building OpenShot.
Report a bug
You can report a new libopenshot issue directly on GitHub:
https://github.com/OpenShot/libopenshot/issues
Websites
- https://www.openshot.org/ (Official website and blog)
- https://github.com/OpenShot/libopenshot/ (source code and issue tracker)
- https://github.com/OpenShot/libopenshot-audio/ (source code for audio library)
- https://github.com/OpenShot/openshot-qt/ (source code for Qt client)
- https://launchpad.net/openshot/
License
Copyright (c) 2008-2021 OpenShot Studios, LLC.
OpenShot Library (libopenshot) is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
OpenShot Library (libopenshot) is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with OpenShot Library. If not, see http://www.gnu.org/licenses/.
To release a closed-source product which uses libopenshot (i.e. video editing and playback), commercial licenses are also available: contact sales@openshot.org for more information.