script for mpv player to skip automatically parts of a media file

skip.lua

[[-- 
this is a script for mpv player, it's purpose is to skip automatically parts of a media file
how does it work:
- install this script in mpv scripts directory
- let's say you wan't to skip from position 300s to 310s and from 5001 to 5020 in a file called movie.mp4,
- in it's directory create a file called movie.txt that contains the following lines
300,310
5001,5020
- open movie.mp4 in mpv
- enjoy

hint : this script also provides an easy way to get current time in seconds, press "c" and it show top left of the screen
--]]

positions = {}

local function load_table()
    timer:resume()
    positions = {}
    local path = mp.get_property("path"):match("(.+)%..+")..".txt"
    local file =io.open(path,"r")

    if file then
        io.close(file)
        for line in io.lines(path) do
            b,e = line:match("(.+)%,(.+)")
            table.insert(positions,{tonumber(b),tonumber(e)})
        end
        
    end
end

local function get_time()
    return tonumber(mp.get_property("time-pos"))
end

local function check()
    now = get_time()    
    for i,pair in ipairs(positions) do
        if now >= pair[1] and now < pair[2] then
            mp.set_property("time-pos",pair[2])
        end
    end
end
local function pause_timer()
    timer:stop()
end

local function show_time()
    mp.osd_message(string.format("%d",get_time()))
end

timer = mp.add_periodic_timer(1, check)
mp.register_event("seek",check)
mp.register_event("file-loaded", load_table)
mp.register_event("end-file",pause_timer)
mp.add_key_binding("c", "show_time", show_time)