class Bagel::Video::FFMPEG::FadeFilter
Public Class Methods
for_clip(fade)
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# File lib/bagel/video/ffmpeg/fade_filter.rb, line 5 def self.for_clip(fade) new(INDEX_VIDEO, fade, LABEL_VIDEO, false).to_s end
for_overlay(fade, input_index)
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# File lib/bagel/video/ffmpeg/fade_filter.rb, line 9 def self.for_overlay(fade, input_index) new(input_index+1, fade, "#{LABEL_OVERLAY}#{input_index}", true).to_s end
new(input_index, fade, label, alpha=false)
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# File lib/bagel/video/ffmpeg/fade_filter.rb, line 13 def initialize(input_index, fade, label, alpha=false) @input_index = input_index @fade = fade @label = label @alpha = alpha end
Public Instance Methods
to_s()
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# File lib/bagel/video/ffmpeg/fade_filter.rb, line 20 def to_s chain = [] if fade.in_start && fade.in_duration chain << "fade=t=in:st=#{fade.in_start}:d=#{fade.in_duration}:alpha=#{alpha ? '1' : '0'}" end if fade.out_start && fade.out_duration chain << "fade=t=out:st=#{fade.out_start}:d=#{fade.out_duration}:alpha=#{alpha ? '1' : '0'}" end "[#{input_index}]#{chain.join(',')}[#{label}]" end