The last version increases were:
libavcodec: 2013-03-xx
libavdevice: 2013-03-xx
-libavfilter: 2012-06-22
+libavfilter: 2013-12-xx
libavformat: 2013-03-xx
libavresample: 2012-10-05
libswscale: 2011-06-20
-libavutil: 2012-10-22
+libavutil: 2013-12-xx
API changes, most recent first:
-2013-xx-xx - xxxxxxx - lavu 52.12.0 - cpu.h
+2013-12-xx - xxxxxxx - lavc 55.30.0 - avcodec.h
+ Add HEVC profiles
+
+2013-12-xx - xxxxxxx - lavc 55.28.1 - avcodec.h
+ av_frame_alloc(), av_frame_unref() and av_frame_free() now can and should be
+ used instead of avcodec_alloc_frame(), avcodec_get_frame_defaults() and
+ avcodec_free_frame() respectively. The latter three functions are deprecated.
+
+2013-11-xx - xxxxxxx- - lavu 52.20.0 - frame.h
+ Add AV_FRAME_DATA_STEREO3D value to the AVFrameSideDataType enum and
+ stereo3d.h API, that identify codec-independent stereo3d information.
+
+2013-11-xx - xxxxxxx- - lavu 52.19.0 - frame.h
+ Add AV_FRAME_DATA_A53_CC value to the AVFrameSideDataType enum, which
+ identifies ATSC A53 Part 4 Closed Captions data.
+
+2013-11-xx - xxxxxxx - lavu 52.18.0 - mem.h
+ Move av_fast_malloc() and av_fast_realloc() for libavcodec to libavutil.
+
+2013-10-xx - xxxxxxx - lavc 55.27.0 - avcodec.h
+ Deprecate AVCodecContext.error_rate, it is replaced by the 'error_rate'
+ private option of the mpegvideo encoder family.
+
+2013-11-xx - xxxxxxx - lavc 55.26.0 - vdpau.h
+ Add av_vdpau_get_profile().
+ Add av_vdpau_alloc_context(). This function must from now on be
+ used for allocating AVVDPAUContext.
+
+2013-11-xx - xxxxxxx - lavc 55.25.0 - avcodec.h
+ Add ITU-R BT.2020 and other not yet included values to color primaries,
+ transfer characteristics and colorspaces.
+
+2013-08-xx - xxxxxxx - lavu 52.17.0 - avframe.h
+ Add AVFrame.flags and AV_FRAME_FLAG_CORRUPT.
+
+2013-08-xx - xxxxxxx - lavfi 3.11.0 - avfilter.h
+ Add AVFilterGraph.execute and AVFilterGraph.opaque for custom slice threading
+ implementations.
+
+2013-09-21 - xxxxxxx - lavu 52.16.0 - pixfmt.h
+ Add interleaved 4:2:2 8/10-bit formats AV_PIX_FMT_NV16 and
+ AV_PIX_FMT_NV20.
+
+2013-09-16 - 3feb3d6 - lavu 52.15.0 - mem.h
+ Add av_reallocp.
+
+2013-08-10 - 5a9a9d4 - lavc 55.16.0 - avcodec.h
+ Extend AVPacket API with av_packet_unref, av_packet_ref,
+ av_packet_move_ref, av_packet_copy_props, av_packet_free_side_data.
+
+2013-08-05 - f824535 - lavc 55.13.0 - avcodec.h
+ Deprecate the bitstream-related members from struct AVVDPAUContext.
+ The bistream buffers no longer need to be explicitly freed.
+
+2013-08-05 - 549294f - lavc 55.12.0 - avcodec.h
+ Deprecate the CODEC_CAP_HWACCEL_VDPAU codec capability. Use CODEC_CAP_HWACCEL
+ and select the AV_PIX_FMT_VDPAU format with get_format() instead.
+
+2013-08-05 - a0ad5d0 - lavu 52.14.0 - pixfmt.h
+ Deprecate AV_PIX_FMT_VDPAU_*. Use AV_PIX_FMT_VDPAU instead.
+
+2013-08-02 - a8b1927 - lavc 55.11.0 - avcodec.h
+ Add output_picture_number to AVCodecParserContext.
+
+2013-06-24 - 95d5246 - lavc 55.10.0 - avcodec.h
+ Add MPEG-2 AAC profiles
+
+2013-06-04 - fc962d4 - lavu 52.13.0 - mem.h
+ Add av_realloc_array and av_reallocp_array
+
+2013-05-24 - 129bb23 - lavfi 3.10.0 - avfilter.h
+ Add support for slice multithreading to lavfi. Filters supporting threading
+ are marked with AVFILTER_FLAG_SLICE_THREADS.
+ New fields AVFilterContext.thread_type, AVFilterGraph.thread_type and
+ AVFilterGraph.nb_threads (accessible directly or through AVOptions) may be
+ used to configure multithreading.
+
+2013-05-24 - 2a6eaea - lavu 52.12.0 - cpu.h
Add av_cpu_count() function for getting the number of logical CPUs.
-2013-05-xx - xxxxxxx - lavc 55.7.0 - avcodec.h
+2013-05-24 - b493847 - lavc 55.7.0 - avcodec.h
Add picture_structure to AVCodecParserContext.
-2013-05-xx - xxxxxxx - lavu 52.11.0 - pixdesc.h
+2013-05-15 - e6c4ac7 - lavu 52.11.0 - pixdesc.h
Replace PIX_FMT_* flags with AV_PIX_FMT_FLAG_*.
-2013-04-xx - xxxxxxx - lavc 55.4.0 - avcodec.h
+2013-04-03 - 507b1e4 - lavc 55.4.0 - avcodec.h
Add field_order to AVCodecParserContext.
-2013-03-xx - xxxxxxx - lavc 55.2.0 - avcodec.h
+2013-04-19 - 5e83d9a - lavc 55.2.0 - avcodec.h
Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
2013-04-11 - lavfi 3.8.0