Ardour is a multi-track audio and MIDI recording software that gives users complete control over the tools they need to create their project. The application supports any sample rate and bit depth, and works across multiple file formats. In addition, it allows users to create and manage complex signal flows with simple inserts and sends. For more information, visit the official website of Ardour. You can also download the source code and compile it on your own to use the software for free.
Ardour lets you import a single video and optionally extract the soundtrack from it. This allows you to view the video's frame-by-frame timeline and to lock audio-regions in place. When you export the video, you can trim the start and end of the clip, add blank frames, and mux it with the current session's soundtrack. Besides, it also allows you to edit the audio-regions and export the entire video, which is ideal for editing.
Ardour is licensed under the GNU General Public License (GNU GPL). Version 2 and later versions are available. It is distributed WITHOUT WARRANTIES. The GNU General Public License does not include the implied warranties of merchantability or fitness for a particular purpose. Microsoft, Apple, and Linus Torvalds are trademarks of their respective companies. You can download a free version of Ardour from the developer's website, but you can't change the software's source code.