From: Chris Donhofer <c.donhofer@...>
Date: 2006-09-25T07:10:09+09:00
Subject: Re: catching process output (Kernel#system)

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i got my video converter script working and since im very new to ruby,
i'd really appreciate feedback, so i can learn how to use ruby better.
(the script is attached)
all comments welcome! =)

TIA, chris


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 filename="flv_encoder.rb"


#@Author:	Christian (insel) Donhofer
#@Contact:	c.donhofer@chello.at

require 'ftools'
require 'date'

class FlvEncoder

	def instantiate
		
	end

	def start_conversion
		@ts = DateTime.now
		msg "FLV_Encoder [SESSION STARTING](#{@ts.day}.#{@ts.month}.#{@ts.year}, #{@ts.hour}:#{@ts.min}:#{@ts.sec})..."
	
		#define working directories
		@indir		= Dir.pwd+"/in"
		@spooldir	= Dir.pwd+"/spool"
		@outdir		= Dir.pwd+"/out"
		@bakdir		= Dir.pwd+"/bak"
		@dumpdir	= Dir.pwd+"/dump"

		@files		= []
	
		#get filelist
		msg "reading #{@indir}"
		@files = Dir.entries(@indir)
		#transcode all media files
		@files.each do |file|
			do_convert(file) unless (file.eql?(".") || file.eql?(".."))
		end
	end

	def do_convert(file)
		@ts = DateTime.now
		msg "[PROCESS STARTING](#{@ts.day}.#{@ts.month}.#{@ts.year}, #{@ts.hour}:#{@ts.min}:#{@ts.sec})..."
		
		#create backup
		msg "Creating backup instance...".upcase
		msg "#{@indir}/#{file} ---> #{@bakdir}/#{file}"
		File.copy("#{@indir}/#{file}", "#{@bakdir}/#{file}")
		
		#move file
		msg "MOVING FILE..."
		msg "#{@indir}/#{file} ---> #{@spooldir}/#{file}"
		File.move("#{@indir}/#{file}", "#{@spooldir}/#{file}")
		
		#define actual and targetfile
		actual_file = "#{@spooldir}/#{file}";
		target_file = "#{@outdir}/"+File.basename(file, File.extname(file))+".flv";
		
		#check file for readability
		if(File.exist?(actual_file) && File.readable?(actual_file))
			msg "File ready for conversion..."
		else
			msg "File not readable or not found - [SKIP]"
			return
		end
		
		#convert file
		msg "STARTING CONVERSION..."
		
		if(File.extname(actual_file)==".mov"|| File.extname(actual_file)==".avi")
			msg "USING FFMPEG..."
			msg "CMD: ffmpeg -i #{actual_file} -t flv #{target_file} 2>&1"
			IO.popen("ffmpeg -i #{actual_file} -t flv #{target_file} 2>&1") do |l|
				msg l.readlines				
			end
		elsif(File.extname(actual_file)==".swf")
			msg "USING SWF2FLV..."
			msg "CMD: swf2flv #{actual_file} #{target_file}"
			IO.popen("swf2flv #{actual_file} #{target_file}") do |l|
				msg l.readlines				
			end
		else
			msg "FILETYPE NOT RECKOGNIZED, DUMPING FILE, [SKIP]..."
			File.move("#{@spooldir}/#{file}", "#{@dumpdir}/#{file}")
			return
		end

		msg "[UNLINK]ING(DELETING) FILE IN SPOOL DIRECTORY..."
		File.unlink("#{@spooldir}/#{file}") if File.exist?("#{@spooldir}/#{file}")
		
		
		#check resulting flv file
		msg "[FLVINFO] for resulting file:"
		IO.popen("flvinfo #{target_file}") do |l|
			msg l.readlines				
		end

		@ts = DateTime.now
		msg "[PROCESS ENDING](#{@ts.day}.#{@ts.month}.#{@ts.year}, #{@ts.hour}:#{@ts.min}:#{@ts.sec})..."
		
		#TODO write log to file
	end

	#log/output text
	def msg(str)
		puts str
		#write to log
		if @log.nil?
			@log = []
		end
		@log.push str
	end
end

#create converter
conv = FlvEncoder.new
conv.start_conversion

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