API changes, most recent first:
+2016-xx-xx - xxxxxxx - lavc 57.24.0 - avcodec.h
+ Decoders now export the frame timestamp as AVFrame.pts. It was
+ previously exported as AVFrame.pkt_pts, which is now deprecated.
+
+2016-xx-xx - xxxxxxx - lavu 55.16.0 - hwcontext.h hwcontext_qsv.h
+ Add AV_HWDEVICE_TYPE_QSV and a new installed header with QSV-specific
+ hwcontext definitions.
+
+2016-xx-xx - xxxxxxx - lavc 57.23.0 - avcodec.h
+ AVCodecContext.hw_frames_ctx now may be used by decoders.
+
+2016-xx-xx - xxxxxxx - lavc 57.20.0 - avcodec.h
+ Add FF_PROFILE_H264_MULTIVIEW_HIGH and FF_PROFILE_H264_STEREO_HIGH.
+
+2016-xx-xx - xxxxxxx - lavu 55.13.0 - hwcontext.h
+ Add av_hwdevice_ctx_create().
+
+2016-xx-xx - xxxxxxx - lavc 57.19.1 - avcodec.h
+ Adjust values for JPEG 2000 profiles.
+
2016-xx-xx - xxxxxxx - lavf 57.7.0 - avio.h
Add AVIODataMarkerType, write_data_type, ignore_boundary_point and
avio_write_marker.