class Av::Commands::Ffmpeg
Public Class Methods
new(options = {})
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Calls superclass method
Av::Commands::Base::new
# File lib/av/commands/ffmpeg.rb, line 8 def initialize(options = {}) super(options) @command_name = "ffmpeg" # TODO handle quite for ffmpeg end
Public Instance Methods
filter_concat(list)
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# File lib/av/commands/ffmpeg.rb, line 14 def filter_concat list index_file = Tempfile.new('ffmpeg-concat') File.open(index_file, 'w') do |file| list.each do |item| file.write("file '#{item}'\n") end end add_input_param concat: "-i #{index_file.path}" self end
filter_rotate(degrees)
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# File lib/av/commands/ffmpeg.rb, line 30 def filter_rotate degrees raise ::Av::InvalidFilterParameter unless degrees % 90 == 0 case degrees when 90 add_input_param vf: 'transpose=1' when 180 add_input_param vf: 'vflip,hflip' when 270 add_input_param vf: 'transpose=2' end self end
filter_volume(vol)
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# File lib/av/commands/ffmpeg.rb, line 25 def filter_volume vol add_input_param af: "volume=#{vol}" self end