API changes, most recent first:
+2015-10-29 - lavc 57.12.100 / 57.8.0 - avcodec.h
+ xxxxxx - Deprecate av_free_packet(). Use av_packet_unref() as replacement,
+ it resets the packet in a more consistent way.
+ xxxxxx - Deprecate av_dup_packet(), it is a no-op for most cases.
+ Use av_packet_ref() to make a non-refcounted AVPacket refcounted.
+ xxxxxx - Add av_packet_alloc(), av_packet_clone(), av_packet_free().
+ They match the AVFrame functions with the same name.
+
+2015-10-27 - xxxxxxx - lavu 55.5.100 - cpu.h
+ Add AV_CPU_FLAG_AESNI.
+
+2015-10-22 - xxxxxxx - lavc 57.9.100 / lavc 57.5.0 - avcodec.h
+ Add data and linesize array to AVSubtitleRect, to be used instead of
+ the ones from the embedded AVPicture.
+
+2015-10-22 - xxxxxxx - lavc 57.8.100 / lavc 57.0.0 - qsv.h
+ Add an API for allocating opaque surfaces.
+
+2015-10-15 - xxxxxxx - lavf 57.4.100
+ Remove the latm demuxer that was a duplicate of the loas demuxer.
+
2015-10-14 - xxxxxxx - lavu 55.4.100 / lavu 55.2.0 - dict.h
Change return type of av_dict_copy() from void to int, so that a proper
error code can be reported.
-2015-09-29 - xxxxxxx - lavc 57.3.100 / lavc 57.2.0 - avcodec.h
+2015-09-29 - b01891a / 948f3c1 - lavc 57.3.100 / lavc 57.2.0 - avcodec.h
Change type of AVPacket.duration from int to int64_t.
-2015-09-17 - xxxxxxx - lavc 57.3.100 / lavc 57.2.0 - d3d11va.h
+2015-09-17 - 7c46f24 / e3d4784 - lavc 57.3.100 / lavc 57.2.0 - d3d11va.h
Add av_d3d11va_alloc_context(). This function must from now on be used for
allocating AVD3D11VAContext.
bit_rate/rc_max_rate/rc_min_rate were changed to 64bit, make sure you update
any printf() or other type sensitive code
-2015-xx-xx - lavu 55.0.100 / 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
+2015-09-07 - lavu 55.0.100 / lavu 55.0.0
+ c734b34 / b8b5d82 - Change type of AVPixFmtDescriptor.flags from uint8_t to uint64_t.
+ f53569a / 6b3ef7f - Change type of AVComponentDescriptor fields from uint16_t to int
and drop bit packing.
- xxxxxxx - Add step, offset, and depth to AVComponentDescriptor to replace
+ 151aa2e / 2268db2 - Add step, offset, and depth to AVComponentDescriptor to replace
the deprecated step_minus1, offset_plus1, and depth_minus1.
-------- 8< --------- FFmpeg 2.8 was cut here -------- 8< ---------