ff_libopenh264_check_version   37 libavcodec/libopenh264.h int ff_libopenh264_check_version(void *logctx);
ff_libopenh264_check_version   58 libavcodec/libopenh264dec.c     if ((err = ff_libopenh264_check_version(avctx)) < 0)
ff_libopenh264_check_version  138 libavcodec/libopenh264enc.c     if ((err = ff_libopenh264_check_version(avctx)) < 0)