Build with FFmpeg 4.4 and switch to the new send/receive APIs.
authorCarl Hetherington <cth@carlh.net>
Sat, 1 May 2021 17:32:15 +0000 (19:32 +0200)
committerCarl Hetherington <cth@carlh.net>
Sat, 1 May 2021 17:32:15 +0000 (19:32 +0200)

Trivial merge