PromyLOPh/pianobar — pull request #441 by jmesmon (2014-04-21 02:47:46+00:00)
Title: avfilter_copy_buf_props() is declared in libavfilter/avcodec.h on my system (ffmpeg 1.2), include it.

Not sure if other LIBAV implementations provide this header, if so it will need to be guarded by a conditional.