Confirm all media in a path can be played back using ffmpeg

mediaCheck.sh

#!/bin/bash
# Name: mediaCheck
# Purpose: Confirm all media in a path can be played back using ffmpeg
# Requires:
# * ffmpeg in $PATH
# * date in $PATH
# * find in $PATH

function checkReqs {
 # checks requirements for the script
 requires="ffmpeg date find"
 re=0
 for i in $requires; do
  if ! which $i > /dev/null; then
   ((re++))
   echo "$i is required in path for this script"
   fi
  done
 if [ "$re" -gt 0 ]; then
  echo "Requirements not met"
  exit 1
  fi
}

function pathCheck {
 # if there isn't a path, use pwd, otherwise clean up whatever is provided.
 if [ -z "$1" ]; then
  lPath=mediaCheck.log
  cPath=$(pwd)
  else
   cPath=$(readlink -f $1)
   lPath=$1
   fi
 }

function pdate {
 # my prefered date formatting
 date +%FT%H:%M:%S
}

function checkMedia {
 # the actual ffmpeg command
 ffmpeg -v error -i $1 -f null - &> "$1.log"
}

function findItems {
 # our main loops
 # first a set of common file types
 for mtype in flv avi m4v mkv mp4; do
  c=0; e=0
  # Get a total per file type
  ttotal=$(find $1 -type f -name \*.$mtype | wc -l)
  # then the actual lookup and check
  for i in $(find $1 -type f -name \*.$mtype); do
    echo -ne "$(pdate) $c out of $ttotal $mtype files checked with $e errors.\r"
    ((c++))
    # check media, and if we fail, increment error counter.
    if ! checkMedia "$i" ; then
    ((e++))
    echo "$i failed" >> $lPath.log
    fi
   done
   echo "$(pdate) $c out of $ttotal $mtype files checked with $e errors."
   unset c e
  done
}

# set blank cpath
cPath=''

# uncomment the line below if this script isn't behaving as expected
# set -x

# Check requirements before anything else
checkReqs
# Then generate a path
pathCheck $1

# Make sure we don't stumble on names with spaces
IFS=$'\n'

echo "$(pdate) scan started."
findItems $cPath
echo "$(pdate) scan complete."