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Tools
AVItools is an application that acts as a graphical user interface for various UNIX commandline programs. These are the tools that do all the video and audio processing. AVItools just supplies a pretty face to simplify the process of using these tools. Without the hard work of numerous programmers and their willingness to release their work as open source, the applications on this web site would not be available to you. The following is a list of the open source applications used by AVItools and links to their web sites where you can learn more about them.
Mencoder and Mplayer do the brunt of the work in AVItools.
Mkvextract is the tool used by AVItools to manipulate MKV files. They are part of the MKVToolnix package.
Avimerge and avisplit from the transcode project are the tools used by AVItools to join, mux and split AVI videos.
Mp4box is the tool used by AVItools to extract tracks from MP4 videos.
Mediainfo is the tools used by AVItools to find properties of videos.
Click on the above links to get more details on any of the above tools.
Updating the Tools
You can also use the above links to easily update the tools used by AVItools. For example, perhaps you have found a build of mencoder that is optimized for your multi-processor Mac. Here are the steps:
- Control click on the AVItools icon and select "Show Package Contents". A new Finder window should appear.
- Open the Contents folder in this new window and then open the Resources folder. You should see the four tools listed above.
- Replace the tool of interest with the updated version making sure that their names are the same. Just in case, you might want to keep the old version(s) of the file.
- Close the folder and run AVItools as usual.
GNU General Public License
The above applications are free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA