class ActiveStorage::Previewer::VideoPreviewer
Public Class Methods
accept?(blob)
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# File lib/active_storage/previewer/video_previewer.rb, line 4 def self.accept?(blob) blob.video? end
Public Instance Methods
preview() { |io: output, filename: "#{filename.base}.jpg", content_type: "image/jpeg"| ... }
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# File lib/active_storage/previewer/video_previewer.rb, line 8 def preview download_blob_to_tempfile do |input| draw_relevant_frame_from input do |output| yield io: output, filename: "#{blob.filename.base}.jpg", content_type: "image/jpeg" end end end
Private Instance Methods
draw_relevant_frame_from(file, &block)
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# File lib/active_storage/previewer/video_previewer.rb, line 17 def draw_relevant_frame_from(file, &block) draw ffmpeg_path, "-i", file.path, "-y", "-vframes", "1", "-f", "image2", "-", &block end
ffmpeg_path()
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# File lib/active_storage/previewer/video_previewer.rb, line 21 def ffmpeg_path ActiveStorage.paths[:ffmpeg] || "ffmpeg" end