What are your goals? What is the challenge you're faced with?
Our software uses code of FFmpeg licensed under the LGPL version 2.1 and it's source can be downloaded here. FFmpeg is a trademark of Fabrice Bellard, originator of the FFmpeg project. Blackmagic Design, Deltacast, Stream Labs, AJA, Magewell, DecTek and other trademarks are property of their respective owners.