ffmpeg : max delay reached.need to consume packet

[Caeser-Bin]

When I use a ".sdp" file to receive a rtp video stream, I got problem, console tiped missed packets, and pthread support is required.
Any master could help me to overcome this difficulty?
console tips:
[udp @ 000002086430c6e0] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
[udp @ 000002086431d9e0] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
[sdp @ 00000208642fc840] max delay reached. need to consume packet
[sdp @ 00000208642fc840] RTP: missed 163 packets
[h264 @ 000002086430bf40] Invalid level prefix
[h264 @ 000002086430bf40] error while decoding MB 87 13
[h264 @ 000002086430bf40] concealing 6562 DC, 6562 AC, 6562 MV errors in P frame