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Contents
module EDL
# When initialized with a file and passed an EDL, will generate thumbnail images
# of the first frame of every event. It is assumed that the movie file starts at the same
# frame as the first EDL event.
class Grabber #:nodoc:
attr_accessor :ffmpeg_bin, :offset
def initialize(with_file)
@source_path = with_file
end
def ffmpeg_bin
@ffmpeg_bin || 'ffmpeg'
end
def grab(edl)
edl.from_zero.events.each do | evt |
grab_frame_tc = evt.rec_start_tc + (offset || 0 )
to_file = File.dirname(@source_path) + '/' + evt.num + '_' + File.basename(@source_path).gsub(/\.(\w+)$/, '')
generate_grab(evt.num, grab_frame_tc, to_file)
end
end
def generate_grab(evt, at, to_file)
cmd = "#{ffmpeg_bin} -i #{@source_path} -an -ss #{at.with_frames_as_fraction} -vframes 1 -y #{to_file}%d.jpg"
`#{cmd}`
end
end
end
Version data entries
15 entries across 15 versions & 2 rubygems