since the last major version increase.
The last version increases were:
-libavcodec: 2014-08-09
-libavdevice: 2014-08-09
-libavfilter: 2014-08-09
-libavformat: 2014-08-09
-libavresample: 2014-08-09
-libswscale: 2014-08-09
-libavutil: 2014-08-09
+libavcodec: 2015-08-28
+libavdevice: 2015-08-28
+libavfilter: 2015-08-28
+libavformat: 2015-08-28
+libavresample: 2015-08-28
+libswscale: 2015-08-28
+libavutil: 2015-08-28
API changes, most recent first:
+2015-xx-xx - lavu 55.0.0
+ xxxxxxx - Change type of AVPixFmtDescriptor.flags from uint8_t to uint64_t.
+ xxxxxxx - Change type of AVComponentDescriptor fields from uint16_t to int
+ and drop bit packing.
+ xxxxxxx - Add step, offset, and depth to AVComponentDescriptor to replace
+ the deprecated step_minus1, offset_plus1, and depth_minus1.
+
2015-xx-xx - lavu 54.17.0
xxxxxxx - Add av_blowfish_alloc().
xxxxxxx - Add av_rc4_alloc().
xxxxxxx - Add av_xtea_alloc().
+ xxxxxxx - Add av_des_alloc().
2015-07-29 - 7e38340 - lavu 54.16.0 - hmac.h
Add AV_HMAC_SHA224 and AV_HMAC_SHA256.