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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
-- This script uses the lavfi idet filter to automatically insert the
-- appropriate deinterlacing filter based on a short section of the
-- currently playing video.
--
-- It registers the key-binding ctrl+d, which when pressed, inserts the filters
-- ``vf=lavfi=idet,pullup,vf=lavfi=idet``. After 4 seconds, it removes these
-- filters and decides whether the content is progressive, interlaced, or
-- telecined and the interlacing field dominance.
--
-- Based on this information, it may set mpv's ``deinterlace`` property (which
-- usually inserts the yadif filter), or insert the ``pullup`` filter if the
-- content is telecined. It also sets mpv's ``field-dominance`` property.
--
-- OPTIONS:
-- The default detection time may be overridden by adding
--
-- --script-opts=autodeint.detect_seconds=<number of seconds>
--
-- to mpv's arguments. This may be desirable to allow idet more
-- time to collect data.
--
-- To see counts of the various types of frames for each detection phase,
-- the verbosity can be increased with
--
-- --msg-level autodeint=v
--
-- This script requires a recent version of ffmpeg for which the idet
-- filter adds the required metadata.
require "mp.msg"
script_name = mp.get_script_name()
detect_label = string.format("%s-detect", script_name)
pullup_label = string.format("%s", script_name)
ivtc_detect_label = string.format("%s-ivtc-detect", script_name)
-- number of seconds to gather cropdetect data
detect_seconds = tonumber(mp.get_opt(string.format("%s.detect_seconds", script_name)))
if not detect_seconds then
detect_seconds = 4
end
function del_filter_if_present(label)
-- necessary because mp.command('vf del @label:filter') raises an
-- error if the filter doesn't exist
local vfs = mp.get_property_native("vf")
for i,vf in pairs(vfs) do
if vf["label"] == label then
table.remove(vfs, i)
mp.set_property_native("vf", vfs)
return true
end
end
return false
end
function start_detect()
-- exit if detection is already in progress
if timer then
mp.msg.warn("already detecting!")
return
end
mp.set_property("deinterlace","no")
del_filter_if_present(pullup_label)
-- insert the detection filter
local cmd = string.format('vf add @%s:lavfi=graph="idet",@%s:pullup,@%s:lavfi=graph="idet"',
detect_label, pullup_label, ivtc_detect_label)
if not mp.command(cmd) then
mp.msg.error("failed to insert detection filters")
return
end
-- wait to gather data
timer = mp.add_timeout(detect_seconds, select_filter)
end
function stop_detect()
del_filter_if_present(detect_label)
del_filter_if_present(ivtc_detect_label)
timer = nil
end
progressive, interlaced_tff, interlaced_bff, interlaced = 0, 1, 2, 3, 4
function judge(label)
-- get the metadata
local result = mp.get_property_native(string.format("vf-metadata/%s", label))
num_tff = tonumber(result["lavfi.idet.multiple.tff"])
num_bff = tonumber(result["lavfi.idet.multiple.bff"])
num_progressive = tonumber(result["lavfi.idet.multiple.progressive"])
num_undetermined = tonumber(result["lavfi.idet.multiple.undetermined"])
num_interlaced = num_tff + num_bff
num_determined = num_interlaced + num_progressive
mp.msg.verbose(label.." progressive = "..num_progressive)
mp.msg.verbose(label.." interlaced-tff = "..num_tff)
mp.msg.verbose(label.." interlaced-bff = "..num_bff)
mp.msg.verbose(label.." undetermined = "..num_undetermined)
if num_determined < num_undetermined then
mp.msg.warn("majority undetermined frames")
end
if num_progressive > 20*num_interlaced then
return progressive
elseif num_tff > 10*num_bff then
return interlaced_tff
elseif num_bff > 10*num_tff then
return interlaced_bff
else
return interlaced
end
end
function select_filter()
-- handle the first detection filter results
verdict = judge(detect_label)
if verdict == progressive then
mp.msg.info("progressive: doing nothing")
stop_detect()
return
elseif verdict == interlaced_tff then
mp.set_property("field-dominance", "top")
elseif verdict == interlaced_bff then
mp.set_property("field-dominance", "bottom")
elseif verdict == interlaced then
mp.set_property("field-dominance", "auto")
end
-- handle the ivtc detection filter results
verdict = judge(ivtc_detect_label)
if verdict == progressive then
mp.msg.info(string.format("telecinied with %s field dominance: using pullup", mp.get_property("field-dominance")))
stop_detect()
else
mp.msg.info(string.format("interlaced with %s field dominance: setting deinterlace property", mp.get_property("field-dominance")))
del_filter_if_present(pullup_label)
mp.set_property("deinterlace","yes")
stop_detect()
end
end
mp.add_key_binding("ctrl+d", script_name, start_detect)
|
