API changes, most recent first:
+2011-05-28 - xxxxxx - lavu 51.3.0 - pixdesc.h
+ Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
+ avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
+
+2011-05-22 - xxxxxx - lavf 53.2.0 - avformat.h
+ Introduce avformat_alloc_output_context2() and deprecate
+ avformat_alloc_output_context().
+
+2011-05-22 - xxxxxx - lavfi 2.10.0 - vsrc_buffer.h
+ Make libavfilter/vsrc_buffer.h public.
+
+2011-05-XX - XXXXXX - lavfi 2.8.0 - avcodec.h
+ Add av_vsrc_buffer_add_frame() to libavfilter/avcodec.h.
+
+2011-05-XX - XXXXXX - lavfi 2.6.0 - avcodec.h
+ Add avfilter_get_video_buffer_ref_from_frame() to libavfilter/avcodec.h.
+
2011-05-28 - 0420bd7 - lavu 51.2.0 - pixdesc.h
Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
min_partition_order, max_partition_order, lpc_type, lpc_passes.
Corresponding FLAC encoder options should be used instead.
+2011-05-07 - xxxxxxx - lavfi 2.5.0 - avcodec.h
+ Add libavfilter/avcodec.h header and avfilter_copy_frame_props()
+ function.
+
+2011-05-07 - xxxxxxx - lavc 53.5.0 - AVFrame
+ Add format field to AVFrame.
+
+2011-05-07 - xxxxxxx - lavc 53.4.0 - AVFrame
+ Add width and height fields to AVFrame.
+
+2011-05-01 - xxxxxxx - lavfi 2.4.0 - avfilter.h
+ Rename AVFilterBufferRefVideoProps.pixel_aspect to
+ sample_aspect_ratio.
+
+2011-05-01 - xxxxxxx - lavc 53.3.0 - AVFrame
+ Add a sample_aspect_ratio field to AVFrame.
+
+2011-05-01 - xxxxxxx - lavc 53.2.0 - AVFrame
+ Add a pkt_pos field to AVFrame.
+
+2011-04-xx - xxxxxxx - lavu 51.2.0 - mem.h
+ Add av_dynarray_add function for adding
+ an element to a dynamic array.
+
2011-04-26 - bebe72f - lavu 51.1.0 - avutil.h
Add AVPictureType enum and av_get_picture_type_char(), deprecate
FF_*_TYPE defines and av_get_pict_type_char() defined in
2011-03-25 - 34b47d7 - lavc 52.115.0 - AVCodecContext.audio_service_type
Add audio_service_type field to AVCodecContext.
+2011-XX-XX - XXXXXXX - lavu XX.XXX.X - pixfmt.h
+ Add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE pixel formats
+
2011-03-02 - 863c471 - lavf 52.103.0 - av_pkt_dump2, av_pkt_dump_log2
Add new functions av_pkt_dump2, av_pkt_dump_log2 that uses the
source stream timebase for outputting timestamps. Deprecate
2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h
Make av_dlog public.
+2011-01-31 - X - lavfi 1.76.0 - vsrc_buffer
+ Add sample_aspect_ratio fields to vsrc_buffer arguments
+
+2011-01-31 - X - lavfi 1.75.0 - AVFilterLink sample_aspect_ratio
+ Add sample_aspect_ratio field to AVFilterLink.
+
2011-01-15 - r26374 - lavfi 1.74.0 - AVFilterBufferRefAudioProps
Rename AVFilterBufferRefAudioProps.samples_nb to nb_samples.