Records 10 seconds of an UDP multicast stream and then it shows the stream settings using mediainfo. Requires medianfo and ffmpeg installed on the host

ffmpeg_stream_check.ts

#!/bin/bash

stream=""
recording_dir=$HOME/recordings

while [[ ! $stream =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+:[0-9] ]];
do
    echo "Please enter a valid multicast address and port in the format: IP.AD.DR.ESS:PORT after the script name!"
    read -r stream
done

if [ ! -d "$recording_dir" ]; then
  echo "Creating the new recording directory: $recording_dir"
  mkdir -p "$recording_dir";
fi

ffmpeg -v error -probesize 30M -analyzeduration 30M -fflags +genpts -re -i udp://"$stream"?fifo_size=1000000 -c copy -t 10 -y -f mpegts "$recording_dir"/"$stream".ts
mediainfo "$recording_dir"/"$stream".ts