* for next time. */size =avio_close_dyn_buf(rtp_ctx->pb, &buf);if((ret = ffio_open_dyn_packet_buf(&rtp_ctx->pb, RTP_MAX_PACKET_SIZE)) <0)gotodone;if(size <=0)gotodone;/* Open a buffer for writing the hint */if((ret = avio_open_dyn_buf(&hintbuf)) <0)gotodone; a...