Is using opencv_ffmpeg.dll in commercial applicatoin require license?
Due to BSD license ,I opted OpenCV for extracting face from a video in a commercial product. For processing video need ffmpeg dll . I want to know : 1. what kind of license of opencv_ffmpeg.dll shipped in openCV package? 2. is this include GPL or non-free parts? 3. Is it safe to use ffmpeg.dll for a commercial application?