警告:libavutil.so.50, needed by ffmpeg/lib//libswscale.so, not found (try using -rpath or -rpath-link)
RtpStreamReceiver/h264decoder.o:-1: In function `H264Decoder::decode(char*, int, AVFrame*, int*)':
RtpStreamReceiver/h264decoder.cpp:-1: 错误:undefined reference to `avcodec_decode_video'
...
报这个错应该怎么办？
