I failed to find any light tool to analyze udp sequence number. You could write traffic with tcpdump/wireshark and analyze udp sequence id field in packets, you'll see out of order or duplicate id there. By the way, some TVs can't even reorder udp packet so if your network jitter big enough and there are some out of order packets, then it might looks like drops on some TVs too.
Also here is small c-program I've wrote to analyze udp stream (linux/bsd) when my eyes started to bleed after watching at traffic. Program will prints out wrong udp sequence id. It spams 65535->0 id jumps too, just ignore it, its ok. Wait for glitches and see if seq numbers ok. Can't attach .c file for some reason, so here comes the spam.
raw_udp.c:
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <errno.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <net/ethernet.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/udp.h>
int main (int argc, char *argv[]) {
int sock, on = 1, len;
char buffer[1500];
struct iphdr *ip;
struct ip_mreq mgr;
uint16_t packet_id, prev_id = 0;
if(argc < 2){
printf("usage: %s <ip address>\n", argv[0]);
return 0;
}
sock = socket(AF_INET, SOCK_RAW, IPPROTO_UDP);
if(sock < 0){
perror("socket() failed");
return -1;
}
if(setsockopt(sock, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on)) < 0){
perror("setting IP_HDRINCL failed");
return -2;
}
ip = (struct iphdr*) buffer;
mgr.imr_multiaddr.s_addr = inet_addr(argv[1]);
mgr.imr_interface.s_addr = INADDR_ANY;
if(setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mgr, sizeof(mgr)) < 0){
perror("setting IP_ADD_MEMBERSHIP failed");
return -4;
}
while (1){
len = recv(sock, buffer, sizeof(buffer), 0);
if(len < 0){
perror("recvfrom() failed");
return -5;
}
if(ip->daddr == mgr.imr_multiaddr.s_addr){
packet_id = ntohs(ip->id);
if(packet_id != prev_id + 1)
printf("got wrong packet seq number. prev: %i, current: %i\n", prev_id, packet_id);
prev_id = packet_id;
}
}
}
