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checking for pkgconfig support for libavcodec... no
checking how to determine LIBAVCODEC_CFLAGS... default
checking ffmpeg/avcodec.h usability... yes
checking ffmpeg/avcodec.h presence... yes
checking for ffmpeg/avcodec.h... yes
checking how to determine LIBAVCODEC_LIBS... default
checking for avcodec_thread_init in -lavcodec... yes