#!/bin/sh
if ( test -z "$2" ) ; then
  O='0'
else
  O=$2
  echo "Offset $O seconds"
fi
if ( test -z "$1" ) ; then
  echo "Usage: $0 <conference prefix> [offset]"
  exit
else
  name=$1
fi

wrtpplay -o $O -f $name.a.rtp 224.2.154.33/25824/1 &
wrtpplay -o $O -f $name.v.rtp 224.2.201.22/60976/1 &
echo killall wrtpplay to stop playback