mirror of
https://github.com/TangentFoxy/.lua-files.git
synced 2024-11-20 21:34:23 +00:00
57 lines
1.8 KiB
Lua
57 lines
1.8 KiB
Lua
#!/usr/bin/env luajit
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local help = [[Usage:
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720p.lua [tune=film] [threads=1]
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Converts everything in the local directory to 720p MP4s, placed in
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"./720p-output". (Defaults to using only a single thread to reduce impact on
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the system.)
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[tune]: Improve encoding by specifying type of video. "film" is the default.
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Can be "grain" for grainy sources, "animation", or "stillimage".
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[threads]: Number of threads ffmpeg will be assigned.
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If a non-number value, ffmpeg's -threads flag will not be used.
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]]
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if arg[1] and arg[1]:find("help") then
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print(help)
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return false
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end
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local error_occurred, utility = pcall(function() return dofile(arg[0]:match("@?(.*/)") or arg[0]:match("@?(.*\\)") .. "utility-functions.lua") end) if not error_occurred then error("\n\nThis script is installed improperly. Follow instructions at:\n\thttps://github.com/TangentFoxy/.lua-files#installation\n") end
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utility.required_program("ffmpeg")
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local tune
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if arg[2] then
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tune = arg[1]
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arg[1] = arg[2]
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end
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local threads = tonumber(arg[1]) or arg[1] or 1
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local tunes = { "film", "grain", "animation", "stillimage", }
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local valid_tune = false
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for _, tune_option in ipairs(tunes) do
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if tune == tune_option then
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valid_tune = true
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break
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end
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end
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if not valid_tune then
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tune = "film"
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end
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local for_files = utility.ls()
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os.execute("mkdir 720p-output")
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for_files(function(file_name)
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local command
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if type(threads) == "number" then
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command = "ffmpeg -threads " .. threads .. " -i \"" .. file_name .. "\" -vf scale=1280:-2 -threads " .. threads .. " -tune " .. tune .. " -crf 28 \"720p-output/" .. file_name .. ".mp4\""
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else
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command = "ffmpeg -i \"" .. file_name .. "\" -vf scale=1280:-2 -tune " .. tune .. " -crf 28 \"720p-output/" .. file_name .. ".mp4\""
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end
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os.execute(command)
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end)
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