1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
# frozen_string_literal: true
require_relative 'shell_helper'
module Booru
module ImageProcessing
class VideoProcessor < Processor
include ShellHelper
def initialize(original_path, directory, metadata)
super(original_path, directory, metadata)
# We keep around a reference to the Tempfile object so that it doesn't get GC'd (and deleted) too early.
@rasterized_tempfile = Tempfile.new(%w[still .png]).tap(&:close)
@rasterized = @rasterized_tempfile.path
end
def is_video?
true
end
def pre_process
write_log 'pre_process'
generate_rasterized
end
def generate_rasterized
median_time = @metadata[:duration] / 2.0
generate_thumb @original_path, median_time, @rasterized
end
def generate_version(dimensions, destination_path)
write_log "generate_version #{dimensions} #{destination_path}"
width, height = dimensions
width &= 4_294_967_294
height &= 4_294_967_294
ffmpeg '-i', @original_path,
'-c:v', 'libvpx',
'-deadline', 'good',
'-cpu-used', '5',
'-auto-alt-ref', '0',
'-qmin', '15',
'-qmax', '35',
'-crf', '31',
'-vf', "scale=w=#{width}:h=#{height}:force_original_aspect_ratio=decrease",
'-max_muxing_queue_size', '4096',
'-slices', '8',
destination_path
end
def additional_process
write_log 'additional_process'
# generate gifs from mp4s/webms; no idea why this is special-cased.
duration = @metadata[:duration] / 10.0
duration = 1 if duration == 0
[[250, :thumb], [150, :thumb_small], [50, :thumb_tiny]].each do |w, n|
# FIXME: Why is this so EXTREME?
exec "ffmpeg -loglevel warning -i #{@original_path.shellescape} -vf \"fps=1/#{duration},scale=w=#{w}:h=#{w}:force_original_aspect_ratio=decrease\" -vframes 10 -qscale:v 2 -f image2pipe -vcodec ppm - | convert -delay 50 -loop 0 - gif:- | gifsicle --no-warnings -O2 -o #{@directory}/#{n}.gif"
end
end
end
end
end
|
