class ActiveJob::Ffmpeg::Encoder::MP4
Public Class Methods
new(options = {})
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Calls superclass method
ActiveJob::Ffmpeg::Encoder::Base::new
# File lib/active_job/ffmpeg/encoder/mp4.rb, line 5 def initialize(options = {}) super @acodec = options[:acodec] || acodec_select end
Public Instance Methods
acodec()
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# File lib/active_job/ffmpeg/encoder/mp4.rb, line 24 def acodec @acodec end
format()
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# File lib/active_job/ffmpeg/encoder/mp4.rb, line 28 def format "mp4" end
preset_options()
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# File lib/active_job/ffmpeg/encoder/mp4.rb, line 10 def preset_options { :size => "640x480", :video_bitrate => "600k", :audio_bitrate => "128k", :audio_sample_rate => 44100, :other_options => "-partitions all -me_method hex -subq 6 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -b_strategy 1 -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -maxrate 1000 -level 30 -async 2#{acodec_select == "libfdk_aac" ? " -cutoff 18000" : ""}" } end
vcodec()
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# File lib/active_job/ffmpeg/encoder/mp4.rb, line 20 def vcodec "libx264" end
Private Instance Methods
acodec_select()
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# File lib/active_job/ffmpeg/encoder/mp4.rb, line 34 def acodec_select return @acodec if @acodec @acodec = case `#{Ffmpeg.ffmpeg_cmd} -v quiet -codecs | grep aac` when /libfdk_aac/ "libfdk_aac" when /libfaac/ "libfaac" when /aac/ "aac" when /libvo_aacenc/ "libvo_aacenc" end end