HandBrake is free, open-source software for video transcoding, available for MacOS X, Linux and Windows.
Do you have a bunch of old video files from old projects that you can't view anymore?
- Maybe the company that helped create the files wennt out of business?
- Are you working on a small budget?
- Working in a remote areas without IT help?
If the answer to any of these questions is "Yes" you might want to give HandBrake a try before you start drafting the next contract.