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152 lines
3.5 KiB
Lua
152 lines
3.5 KiB
Lua
MAX_SPEED = 100
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NORMAL_SPEED = 1
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ONE_SECOND = 1
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skip = false
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-- Max noise (dB) and min silence duration (s) to trigger
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opts = { quietness = -45, duration = 0.85 }
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function setOptions()
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local options = require 'mp.options'
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options.read_options(opts)
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end
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function setTime(time)
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mp.set_property_number('time-pos', time)
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end
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function getTime()
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return mp.get_property_native('time-pos')
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end
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function setSpeed(speed)
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mp.set_property('speed', speed)
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end
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function setPause(state)
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mp.set_property_bool('pause', state)
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end
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function setMute(state)
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mp.set_property_bool('mute', state)
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end
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function initAudioFilter()
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local af_table = mp.get_property_native('af')
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af_table[#af_table + 1] = {
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enabled = false,
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label = 'silencedetect',
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name = 'lavfi',
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params = { graph = 'silencedetect=noise=' .. opts.quietness .. 'dB:d=' .. opts.duration }
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}
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mp.set_property_native('af', af_table)
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end
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function initVideoFilter()
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local vf_table = mp.get_property_native('vf')
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vf_table[#vf_table + 1] = {
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enabled = false,
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label = 'blackout',
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name = 'lavfi',
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params = { graph = '' }
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}
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mp.set_property_native('vf', vf_table)
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end
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function setAudioFilter(state)
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local af_table = mp.get_property_native('af')
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if #af_table > 0 then
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for i = #af_table, 1, -1 do
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if af_table[i].label == 'silencedetect' then
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af_table[i].enabled = state
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mp.set_property_native('af', af_table)
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break
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end
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end
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end
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end
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function dim(state)
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local dim = { width = 0, height = 0 }
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if state == true then
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dim.width = mp.get_property_native('width')
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dim.height = mp.get_property_native('height')
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end
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return dim.width .. 'x' .. dim.height
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end
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function setVideoFilter(state)
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local vf_table = mp.get_property_native('vf')
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if #vf_table > 0 then
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for i = #vf_table, 1, -1 do
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if vf_table[i].label == 'blackout' then
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vf_table[i].enabled = state
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vf_table[i].params = { graph = 'nullsink,color=c=black:s=' .. dim(state) }
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mp.set_property_native('vf', vf_table)
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break
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end
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end
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end
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end
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function silenceTrigger(name, value)
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if value == '{}' or value == nil then
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return
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end
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local skipTime = tonumber(string.match(value, '%d+%.?%d+'))
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local currTime = getTime()
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if skipTime == nil or skipTime < currTime + ONE_SECOND then
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return
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end
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stopSkip()
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setTime(skipTime)
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skip = false
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end
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function setAudioTrigger(state)
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if state == true then
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mp.observe_property('af-metadata/silencedetect', 'string', silenceTrigger)
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else
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mp.unobserve_property(silenceTrigger)
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end
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end
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function startSkip()
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startTime = getTime()
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-- This audio filter detects moments of silence
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setAudioFilter(true)
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-- This video filter makes fast-forward faster
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setVideoFilter(true)
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setAudioTrigger(true)
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setPause(false)
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setMute(true)
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setSpeed(MAX_SPEED)
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end
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function stopSkip()
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setAudioFilter(false)
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setVideoFilter(false)
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setAudioTrigger(false)
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setMute(false)
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setSpeed(NORMAL_SPEED)
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end
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function keypress()
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skip = not skip
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if skip then
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startSkip()
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else
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stopSkip()
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setTime(startTime)
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end
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end
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setOptions(opts)
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initAudioFilter()
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initVideoFilter()
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mp.add_key_binding('Tab', 'skip-key', keypress)
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