API changes, most recent first:
+2019-04-20 - 3153a6502a - lavc 58.52.100 - avcodec.h
+ Add AV_CODEC_FLAG_DROPCHANGED to allow avcodec_receive_frame to drop
+ frames whose parameters differ from first decoded frame in stream.
+
+2019-04-12 - abfeba9724 - lavf 58.27.102
+ Rename hls,applehttp demuxer to hls
+
2019-01-27 - XXXXXXXXXX - lavc 58.46.100 - avcodec.h
Add discard_damaged_percentage