since the last major version increase.
The last version increases were:
-libavcodec: 2012-01-27
-libavdevice: 2011-04-18
+libavcodec: 2013-03-xx
+libavdevice: 2013-03-xx
libavfilter: 2012-06-22
-libavformat: 2012-01-27
+libavformat: 2013-03-xx
libavresample: 2012-10-05
libswscale: 2011-06-20
libavutil: 2012-10-22
API changes, most recent first:
-2012-xx-xx - xxxxxxx - lavu 52.2.1 - avstring.h
+2013-08-xx - xxxxxxx - lavu 52.14.0 - pixfmt.h
+ Deprecate AV_PIX_FMT_VDPAU_*. Use AV_PIX_FMT_VDPAU instead.
+
+2013-08-xx - xxxxxxx - lavc 55.11.0 - avcodec.h
+ Add output_picture_number to AVCodecParserContext.
+
+2013-06-xx - xxxxxxx - lavc 55.10.0 - avcodec.h
+ Add MPEG-2 AAC profiles
+
+2013-06-xx - xxxxxxx - lavu 52.13.0 - mem.h
+ Add av_realloc_array and av_reallocp_array
+
+2013-05-xx - xxxxxxx - 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-xx-xx - xxxxxxx - 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
+ Add picture_structure to AVCodecParserContext.
+
+2013-05-xx - xxxxxxx - 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
+ Add field_order to AVCodecParserContext.
+
+2013-03-xx - xxxxxxx - lavc 55.2.0 - avcodec.h
+ Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
+
+2013-04-11 - lavfi 3.8.0
+ 38f0c07 - Move all content from avfiltergraph.h to avfilter.h. Deprecate
+ avfilterhraph.h, user applications should include just avfilter.h
+ bc1a985 - Add avfilter_graph_alloc_filter(), deprecate avfilter_open() and
+ avfilter_graph_add_filter().
+ 1113672 - Add AVFilterContext.graph pointing to the AVFilterGraph that contains the
+ filter.
+ 48a5ada - Add avfilter_init_str(), deprecate avfilter_init_filter().
+ 1ba95a9 - Add avfilter_init_dict().
+ 7cdd737 - Add AVFilter.flags field and AVFILTER_FLAG_DYNAMIC_{INPUTS,OUTPUTS} flags.
+ 7e8fe4b - Add avfilter_pad_count() for counting filter inputs/outputs.
+ fa2a34c - Add avfilter_next(), deprecate av_filter_next().
+ Deprecate avfilter_uninit().
+
+2013-04-09 - lavfi 3.7.0 - avfilter.h
+ b439c99 - Add AVFilter.priv_class for exporting filter options through the
+ AVOptions API in the similar way private options work in lavc and lavf.
+ 8114c10 - Add avfilter_get_class().
+ Switch all filters to use AVOptions.
+
+2013-03-19 - 2c328a9 - lavu 52.9.0 - pixdesc.h
+ Add av_pix_fmt_count_planes() function for counting planes in a pixel format.
+
+2013-03-16 - 42c7c61 - lavfi 3.6.0
+ Add AVFilterGraph.nb_filters, deprecate AVFilterGraph.filter_count.
+
+2013-03-08 - Reference counted buffers - lavu 52.8.0, lavc 55.0.0, lavf 55.0.0,
+lavd 54.0.0, lavfi 3.5.0
+ 8e401db, 1cec062 - add a new API for reference counted buffers and buffer
+ pools (new header libavutil/buffer.h).
+ 1afddbe - add AVPacket.buf to allow reference counting for the AVPacket data.
+ Add av_packet_from_data() function for constructing packets from
+ av_malloc()ed data.
+ 7ecc2d4 - move AVFrame from lavc to lavu (new header libavutil/frame.h), add
+ AVFrame.buf/extended_buf to allow reference counting for the AVFrame
+ data. Add new API for working with reference-counted AVFrames.
+ 759001c - add the refcounted_frames field to AVCodecContext to make audio and
+ video decoders return reference-counted frames. Add get_buffer2()
+ callback to AVCodecContext which allocates reference-counted frames.
+ Add avcodec_default_get_buffer2() as the default get_buffer2()
+ implementation.
+ Deprecate AVCodecContext.get_buffer() / release_buffer() /
+ reget_buffer(), avcodec_default_get_buffer(),
+ avcodec_default_reget_buffer(), avcodec_default_release_buffer().
+ Remove avcodec_default_free_buffers(), which should not have ever
+ been called from outside of lavc.
+ Deprecate the following AVFrame fields:
+ * base -- is now stored in AVBufferRef
+ * reference, type, buffer_hints -- are unnecessary in the new API
+ * hwaccel_picture_private, owner, thread_opaque -- should not
+ have been acessed from outside of lavc
+ * qscale_table, qstride, qscale_type, mbskip_table, motion_val,
+ mb_type, dct_coeff, ref_index -- mpegvideo-specific tables,
+ which are not exported anymore.
+ 7e35037 - switch libavfilter to use AVFrame instead of AVFilterBufferRef. Add
+ av_buffersrc_add_frame(), deprecate av_buffersrc_buffer().
+ Add av_buffersink_get_frame() and av_buffersink_get_samples(),
+ deprecate av_buffersink_read() and av_buffersink_read_samples().
+ Deprecate AVFilterBufferRef and all functions for working with it.
+
+2013-03-17 - 12c5c1d - lavu 52.8.0 - avstring.h
+ Add av_isdigit, av_isgraph, av_isspace, av_isxdigit.
+
+2013-02-23 - 9f12235 - lavfi 3.4.0 - avfiltergraph.h
+ Add resample_lavr_opts to AVFilterGraph for setting libavresample options
+ for auto-inserted resample filters.
+
+2013-01-25 - 38c1466 - lavu 52.7.0 - dict.h
+ Add av_dict_parse_string() to set multiple key/value pairs at once from a
+ string.
+
+2013-01-25 - b85a5e8 - lavu 52.6.0 - avstring.h
+ Add av_strnstr()
+
+2013-01-15 - 8ee288d - lavu 52.5.0 - hmac.h
+ Add AVHMAC.
+
+2013-01-13 - 44e065d - lavc 54.36.0 - vdpau.h
+ Add AVVDPAUContext struct for VDPAU hardware-accelerated decoding.
+
+2013-01-12 - 169fb94 - lavu 52.4.0 - pixdesc.h
+ Add AV_PIX_FMT_VDPAU flag.
+
+2013-01-07 - 074a00d - lavr 1.1.0
+ Add avresample_set_channel_mapping() for input channel reordering,
+ duplication, and silencing.
+
+2012-12-29 - d8fd06c - lavu 52.3.0 - avstring.h
Add av_basename() and av_dirname().
-2012-xx-xx - xxxxxxx - lavu 52.2.0 - audioconvert.h
+2012-11-11 - 5980f5d - lavu 52.2.0 - audioconvert.h
Rename audioconvert.h to channel_layout.h. audioconvert.h is now deprecated.
-2012-xx-xx - xxxxxxx - lavu 52.1.0 - intmath.h
+2012-11-05 - dfde8a3 - lavu 52.1.0 - intmath.h
Add av_ctz() for trailing zero bit count
-2012-10-18 - xxxxxxx - lavu 51.45.0 - error.h
+2012-10-21 - a893655 - lavu 51.45.0 - error.h
Add AVERROR_EXPERIMENTAL
-2012-10-12 - xxxxxxx - lavu 51.44.0 - pixdesc.h
+2012-10-12 - d2fcb35 - lavu 51.44.0 - pixdesc.h
Add functions for accessing pixel format descriptors.
Accessing the av_pix_fmt_descriptors array directly is now
deprecated.
-2012-10-xx - xxxxxxx - lavu 51.43.0 - aes.h, md5.h, sha.h, tree.h
+2012-10-11 - 9a92aea - lavu 51.43.0 - aes.h, md5.h, sha.h, tree.h
Add functions for allocating the opaque contexts for the algorithms,
deprecate the context size variables.
-2012-10-xx - xxxxxxx - lavf 54.18.0 - avio.h
+2012-10-10 - b522000 - lavf 54.18.0 - avio.h
Add avio_closep to complement avio_close.
-2012-10-xx - xxxxxxx - lavu 51.42.0 - pixfmt.h
+2012-10-08 - 78071a1 - lavu 51.42.0 - pixfmt.h
Rename PixelFormat to AVPixelFormat and all PIX_FMT_* to AV_PIX_FMT_*.
To provide backwards compatibility, PixelFormat is now #defined as
AVPixelFormat.