since the last major version increase or the API was added.
The last version increases were:
-libavcodec: 2013-03-xx
-libavdevice: 2013-03-xx
-libavfilter: 2013-12-xx
-libavformat: 2013-03-xx
-libavresample: 2012-10-05
-libpostproc: 2011-04-18
-libswresample: 2011-09-19
-libswscale: 2011-06-20
-libavutil: 2012-10-22
+libavcodec: 2014-08-09
+libavdevice: 2014-08-09
+libavfilter: 2014-08-09
+libavformat: 2014-08-09
+libavresample: 2014-08-09
+libpostproc: 2014-08-09
+libswresample: 2014-08-09
+libswscale: 2014-08-09
+libavutil: 2014-08-09
API changes, most recent first:
+2014-08-16 - xxxxxxx - lswr 1.1.100 - swresample.h
+ Add AVFrame based API
+
+2014-xx-xx - xxxxxxx - lavu 54.4.100 - dict.h
+ Add av_dict_set_int helper function.
+
+2014-08-xx - xxxxxxx - lavu 54.03.0 - mem.h
+ Add av_strndup().
+
+2014-xx-xx - xxxxxxx - lavu 54.02.0 - opt.h
+ Add av_opt_get_dict_val/set_dict_val with AV_OPT_TYPE_DICT to support
+ dictionary types being set as options.
+
+2014-xx-xx - xxxxxxx - lavf 56.01.0 - avformat.h
+ Add AVFormatContext.event_flags and AVStream.event_flags for signaling to
+ the user when events happen in the file/stream.
+
+2014-04-xx - xxxxxxx - lavr 2.1.0 - avresample.h
+ Add avresample_convert_frame() and avresample_config().
+
+2014-04-xx - xxxxxxx - lavu 54.1.0 - error.h
+ Add AVERROR_INPUT_CHANGED and AVERROR_OUTPUT_CHANGED.
+
2014-08-xx - xxxxxxx - lavc 55.57.4 - avcodec.h
Deprecate FF_IDCT_XVIDMMX define and xvidmmx idct option.
Replaced by FF_IDCT_XVID and xvid respectively.