One of my favorite things about Mpv is that it's basically a clear cut example on how to use the FFmpeg api. It's written in a way that's fairly straightforward to follow, and was rather instrumental in me understanding the hardware acceleration API of FFmpeg.
Yes, that's true. I even contributed one feature to mpv. It was easy to port some features regarding VAAPI post processing - extra deinterlace modes and correctly handling bottom field first videos that Kodi had, but mpv didn't at the time.
