added options

convert.sh

@@ -1,27 +1,156 @@
 #!/bin/bash
 
-# Check if the converterfile exists
-if [ ! -f $PWD/video_formats.json ]
+########
+# Init Variables
+# Available Environment Variables:
+
+# VIDEO_FORMATS_LOCATION: Pass a location to a different json file holding video convert configurations
+# VIDEO_LOCATION: Pass a location to a different folder which holds the videos
+# VIDEO_FORMATS: Pass all video formats which should trigger the conversion, seperated by ":". Example: .mp4:.wmv
+# VIDEO_FFMPEG_PATH: Path to ffmpeg executable
+########
+
+########
+# Environment variables as a base
+########
+
+# Video formats location
+if [ -n $VIDEO_FORMATS_LOCATION ]
 then
+	video_formats_location=$VIDEO_FORMATS_LOCATION
+fi
+
+# Video location
+if [ -n $VIDEO_LOCATION ]
+then
+	video_location=$VIDEO_LOCATION
+fi
+
+# All video formats
+if [ -n $VIDEO_FORMATS ]
+then
+	video_formats=$VIDEO_FORMATS
+fi
+
+# ffmpeg executable
+if [ -n $VIDEO_FFMPEG_PATH ]
+then
+	video_ffmpeg_path=$VIDEO_FFMPEG_PATH
+fi
+
+########
+# Passed Options, any passed option will overwrite a previously set environment variable
+########
+
+while getopts ":c:p:v:p:h" opt; do
+  case $opt in
+    c)
+      video_formats_location=$OPTARG
+      ;;
+    p)
+      video_location=$OPTARG
+      ;;
+    v)
+      video_formats=$OPTARG
+      ;;
+    f)
+      video_ffmpeg_path=$OPTARG
+      ;;
+    h)
+      echo "AVAILABLE OPTIONS: 
+ 
+-c: Video Formats Location. Pass a path with a JSON config file for conversion. Defaults to 'video_formats.json' in current folder. 
+-p: Video Location. Pass a location to a different folder which holds the videos. Defaults to currents folder. 
+-v: Video Formats. Pass all video formats which should trigger the conversion, seperated by ':'. Example: .mp4:.wmv 
+-f: Path to ffmpeg executable. Defaults to 'ffmpeg'
+-h: Print this help message.
+
+ENVIRONMENT VARIABLES: 
+All settings can also be done via environment variables. However, a passed option will overwrite a previously set environment variable. 
+ 
+VIDEO_FORMATS_LOCATION: Pass a location to a different json file holding video convert configurations 
+VIDEO_LOCATION: Pass a location to a different folder which holds the videos 
+VIDEO_FORMATS: Pass all video formats which should trigger the conversion, seperated by ':. Example: .mp4:.wmv 
+VIDEO_FFMPEG_PATH: Path to ffmpeg executable 
+ 
+Copyright 2017 K. Langenberg 
+Licensed under GNU GPLv3"
+	  exit 0
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG. Use -h to print all available options." >&2
+      exit 1
+      ;;
+    :)
+      echo "Option -$OPTARG requires an argument. Use -h to print all available options." >&2
+      exit 1
+      ;;
+  esac
+done
+
+########
+# Defaults
+########
+
+# Video Formats Location
+if [ -z $video_formats_location ]
+then 
+	video_formats_location=$PWD/video_formats.json
+fi
+
+# Video Location
+if [ -z $video_location ]
+then 
+	video_location=$PWD
+fi
+
+# Video Formats
+if [ -z $video_formats ]
+then 
+	video_formats='.mp4'
+fi
+
+# Default ffmpeg path
+if [ -z $video_ffmpeg_path ]
+then
+	video_ffmpeg_path=ffmpeg
+fi
+
+########
+# Checks
+########
+# Check if the converterfile exists
+if [ ! -f $video_formats_location ]
+then
+	echo "Video Formats .json file ($video_formats_location) does not exist!"
 	exit 1;
 fi
 
-# Loop through our convertfile and convert the video
-videoformats=$(<video_formats.json)
+# Check if the video folder exists
+if [ ! -d $video_location ]
+then
+	echo "Video location folder ($video_location) does not exist!"
+	exit 1;
+fi
 
-# TODO: options to pass (via options or Environments Variables)
-# * A different video_formats_location
-# * A different folder
-# * Everything which is a Video Format
-# * ffmpeg path
+# Remove end slash in video location
+video_location=${video_location%/}
+
+# Make an array of all video formats we want to convert
+
+# Loop through our convertfile
+videoformats=$(<$video_formats_location)
 
 # Remove Spaces in filename (because bash doesn't like them and would throw an error)
 rename 's/ /_/g' *
 
+########
 # Run every 5 seconds
+########
+
 while true; do
 	# loop through all files
-	for file in $PWD/*; do
+	for file in $video_location/*; do
 		# Check if the current file is a video
 		if [ ${file: -4} == ".mp4" ]
 		then
@@ -48,7 +177,7 @@ while true; do
 					
 					echo "Converting to $(_jq '.name'), Resolution: $(_jq '.resolution'), Bitrate: $(_jq '.video_bitrate'), Framerate: $(_jq '.framerate')"
 
-					# Make Framerate optional, don't use Framerate if it is not set
+					# Make Framerate optional, don't modify the framerate if it is not set
 					framerate=""
 					if [ "$(_jq '.framerate')" != "null" ]
 					then
@@ -56,7 +185,7 @@ while true; do
 					fi
 
 					# Convert
-					ffmpeg -i $file -b:v $(_jq '.video_bitrate') $framerate -c:v $(_jq '.video_codec') -vf scale=$(_jq '.resolution') -c:a $(_jq '.audio_codec') -b:a $(_jq '.audio_bitrate') $file.out/$(basename "$file" .mp4)_$(_jq '.name').$(_jq '.file_ending') &
+					$video_ffmpeg_path -i $file -b:v $(_jq '.video_bitrate') $framerate -c:v $(_jq '.video_codec') -vf scale=$(_jq '.resolution') -c:a $(_jq '.audio_codec') -b:a $(_jq '.audio_bitrate') $file.out/$(basename "$file" .mp4)_$(_jq '.name').$(_jq '.file_ending') &
 				done
 
 				# Wait until all formats are created
@@ -74,5 +203,6 @@ while true; do
 		fi
 	done
 
+	# Every 5 seconds...
 	sleep 5s
 done