API changes, most recent first:
+2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
+ Add av_compare_ts().
+
+2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
+ Add sws_getCoefficients().
+
+2010-02-01 - r21587 - lavf 52.50.0 - metadata API
+ Add a list of generic tag names, change 'author' -> 'artist',
+ 'year' -> 'date'.
+
+2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
+ Add av_get_pix_fmt().
+
+2010-01-21 - r30381 - lsws 0.9.0 - sws_scale
+ Change constness attributes of sws_scale() parameters.
+
+2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
+ Add a log_ctx parameter to avfilter_graph_config_links().
+
+2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
+ Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
+
+2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
+ Change the avfilter_add_colorspace() signature, make it accept an
+ (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
+
+2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
+ Add avfilter_add_colorspace().
+
+2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
+ Add av_match_ext(), it should be used in place of match_ext().
+
+2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
+ Add av_guess_format(), it should be used in place of guess_format().
+
+2009-12-13 - r20834 - lavf 52.43.0 - metadata API
+ Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
+
+2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
+ Add av_d2str().
+
2009-12-13 - r20826 - lavc 52.42.0 - AVStream
- add avg_frame_rate
+ Add avg_frame_rate.
2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
Introduce the av_bmg_next() function.