API changes, most recent first:
+2015-xx-xx - lavu 54.17.0
+ xxxxxxx - Add av_blowfish_alloc().
+ xxxxxxx - Add av_rc4_alloc().
+ xxxxxxx - Add av_xtea_alloc().
+
+2015-07-29 - 7e38340 - lavu 54.16.0 - hmac.h
+ Add AV_HMAC_SHA224 and AV_HMAC_SHA256.
+
+2015-xx-xx - lavc 56.35.0 - avcodec.h
+ xxxxxxxxx - Rename CODEC_FLAG* defines to AV_CODEC_FLAG*.
+ xxxxxxxxx - Rename CODEC_CAP_* defines to AV_CODEC_CAP_*.
+ xxxxxxxxx - Rename FF_INPUT_BUFFER_PADDING_SIZE and FF_MIN_BUFFER_SIZE
+ to AV_INPUT_BUFFER_PADDING_SIZE and AV_INPUT_BUFFER_MIN_SIZE.
+
+2015-xx-xx - xxxxxxx - lavc 56.33.0 - avcodec.h
+ Add AV_PKT_DATA_QUALITY_FACTOR to export the quality value of an AVPacket.
+
+2015-xx-xx - xxxxxxx - lavu 56.15.0
+ Add av_version_info().
+
+2015-xx-xx - xxxxxxx - lavfi 5.1.0 - version.h
+ xxxxxxx - lavd 55.2.0 - version.h
+ Add library identification symbols, LIBAVFILTER_IDENT and LIBAVDEVICE_IDENT.
+
+2015-xx-xx - xxxxxxx - lavf 56.20.0 - avio.h
+ Add avio_put_str16be.
+
+2015-xx-xx - xxxxxxx - lavu 54.14.0 - cpu.h
+ Add AV_CPU_FLAG_AVXSLOW.
+
+2015-xx-xx - xxxxxxx - lavc 56.23.0
+ Add av_vda_default_init2.
+
+2015-xx-xx - xxxxxxx - lavu 54.12.0
+ Add AV_LOG_TRACE for extremely verbose debugging.
+
+2015-xx-xx - xxxxxxx - lavu 54.11.0
+ Add av_small_strptime().
+
+2015-xx-xx - xxxxxxx - lavc 56.22.0
+ Add FF_PROFILE_DTS_EXPRESS.
+
+2015-xx-xx - xxxxxxx - lavu 54.10.0
+ Add AV_PIX_FMT_MMAL for MMAL hardware acceleration.
+
2015-xx-xx - xxxxxxx - lavc 56.13
Add width, height, coded_width, coded_height and format to
AVCodecParserContext.