API changes, most recent first:
+2014-xx-xx - xxxxxxx - lavu 53.04.0 - opt.h
+ Add AV_OPT_FLAG_EXPORT and AV_OPT_FLAG_READONLY to mark options meant (only)
+ for reading.
+
+2014-xx-xx - xxxxxxx - lavu 53.03.01 - opt.h
+ Deprecate unused AV_OPT_FLAG_METADATA.
+
+2014-02-xx - xxxxxxx - lavd 55.10.100 - avdevice.h
+ Add avdevice_list_devices() and avdevice_free_list_devices()
+
+2014-02-16 - db3c970 - lavf 55.33.100 - avio.h
+ Add avio_find_protocol_name() to find out the name of the protocol that would
+ be selected for a given URL.
+
+2014-02-xx - xxxxxxx - lavu 53.3.0 - frame.h
+ Add AV_FRAME_DATA_DOWNMIX_INFO value to the AVFrameSideDataType enum and
+ downmix_info.h API, which identify downmix-related metadata.
+
2014-02-11 - 1b05ac2 - lavf 55.32.100 - avformat.h
Add av_write_uncoded_frame() and av_interleaved_write_uncoded_frame().