API changes, most recent first:
+2021-03-10 - xxxxxxxxxx - lavu 56.68.100 - buffer.h
+ Change AVBufferRef related function and struct size parameter and fields
+ type to size_t at next major bump.
+
+2021-03-04 - xxxxxxxxxx - lavc 58.128.101 - avcodec.h
+ Enable err_recognition to be set for encoders.
+
2021-03-03 - xxxxxxxxxx - lavf 58.70.100 - avformat.h
Deprecate AVFMT_FLAG_PRIV_OPT. It will do nothing
as soon as av_demuxer_open() is removed.