www.makemkv.com

AFAIK, MakeMKV is not open source (except for the Linux GUI). Seems good enough to me. As it turns out, you seem to be correct. The reason the other libraries was there appears to be completeness and to comply with their "you must provide the source code if you use this libraries" clauses...

That would be, but my quick glancing through the source that I found seemed a bit more than just a GUI (I can't think of a reason to include ffmpeg or matroska stuff there if there's no implementation code). Maybe I'm wrong. As I said, I'd only attempt the patch if the needed part was in the open so...

TL;DR: I may try to patch MakeMKV so that it preserves data such as closed captioning for other tools (like CCextractor) to use. If I do this, I'd like to submit it as a patch. Is there any way for me to do that, or any reason for me not to attempt the patch? Full post: A few days ago, I decided to ...