findHD_videos.sh - published from local Scripts source of truth

findHD_videos.sh

#!/usr/bin/env bash

# ==============================================================================
# Script      : findHD_videos.sh
# Description : Recursively scans the current directory for supported media
#               files, inspects their video properties with MPlayer, and creates
#               symbolic links for files that meet the configured HD criteria.
#
#               Videos wider than the minimum resolution are classified into
#               two output directories:
#                 - primary HD candidates meeting both width and frame-rate
#                   thresholds;
#                 - lower-frame-rate candidates meeting only the width threshold.
#
# Requirements:
#   - Bash
#   - GNU find with POSIX regular-expression support
#   - MPlayer
#   - realpath
#
# Usage:
#   Run the script from the root directory containing the media files to scan:
#
#       ./findHD_videos.sh
#
# Notes:
#   - The scan is recursive.
#   - Existing links require interactive confirmation because ln uses -i.
#   - Output directories and quality thresholds are configured in the script.
# ==============================================================================

# Use this CLI tool to make aliases of found HD videos in the directory and sub-directories.
# Tested on OS X 10.11.6 (Darwin 15.6.0) with MacPorts 2.3.4.
#
# Copyleft (C) 2016 dzogrim
# dzogrim < dzogrim [@] dzogrim [.] pw >
# shellcheck disable=SC2034
VERSION="0.1.0 (2016-07-16)" # initial

# Configuration
NAME=$(basename $0)

# Path to retrieve links high and low rate "HD" videos
outputLinks1="${HOME}/Downloads/Video/Aliases1"
outputLinks2="${HOME}/Downloads/Video/Aliases2"
# Set filename extensions to analyse
supportedFormats="(.*\.(flv|m4v|mkv|mov|mp3|mp4|mpg|mpe|mpeg|mts|avi|divx|rm|rmvb|swf|wm|wmv|3g2|3gp|3gpp|k3g|amc|asf))"
# Quality requirements
minWIDTH=1100
minFPS=24

# Make sure the output exists
[[ ! -d "${outputLinks1}" ]] && mkdir -p "${outputLinks1}"
[[ ! -d "${outputLinks2}" ]] && mkdir -p "${outputLinks2}"

# Find all video files
find . -mindepth 1 -type f -regextype posix-awk -iregex ${supportedFormats} | while read theVideoFile
do
  # Get the video widht (or height, or both...)
  thisVideoFile="$( mplayer -vo null -ao null -identify -frames 0 "${theVideoFile}" 2>/dev/null | grep -e 'ID_VIDEO_' | grep -i -e WIDTH )"
  # Filter for high video widht
  if [[ $( echo ${thisVideoFile} | awk 'BEGIN { FS="=" } {print $2}' ) -gt $minWIDTH ]]
    then
      # Try to detect fake HD videos
      if [[ $( mplayer -vo null -ao null -identify -frames 0 "${theVideoFile}" 2>/dev/null | grep ID_VIDEO_FPS | awk 'BEGIN { FS="=" ; OFS="." } {printf "%2d", $2}' ) -gt $minFPS ]]
        then
          # Creating symbolic link to the video in first output dir
          thisPathToFile=$( realpath "${theVideoFile}" )
          ln -i -s "${thisPathToFile}" "${outputLinks1}"
        else
          # Creating symbolic link to the video in second output dir
          thisPathToFile=$( realpath "${theVideoFile}" )
          ln -i -s "${thisPathToFile}" "${outputLinks2}"
      fi
  fi
done