mie00/ffmpeg_runner

## ffmpeg_runner
#!/usr/bin/env python3

# usage: eval `./runner.py VID_20200321_142302.mp4 Recording_9.m4a 0 00:01:40.76 45.2 p3oc.mp4 s3.srt`

import sys
import os
import tempfile

if len(sys.argv) not in [7, 8]:
    print("runner has to run with `runner <video> <audio> <start> <end> <audio_trim> <output> [<subtitle file>]`")
    exit(1)

subtitles = None
if len(sys.argv) == 8:
    subtitles = sys.argv.pop()

[runner, video, audio, start, end, audio_trim, output] = sys.argv

def parse_time(t):
    if isinstance(t, (bytes, bytearray)):
        t = str(t, "utf-8")
    t = t.replace(',', '.')
    xs = t.split(":")
    if len(xs) not in [1, 2, 3]:
        raise Exception("cannot parse %r time"%(t))
    tot = 0
    for i in xs:
        tot = tot * 60 + float(i)
    return tot

def repr_time(t):
    s = t % 60
    t = int(t / 60)
    m = t % 60
    t = int(t / 60)
    h = t
    return "%02.0f:%02.0f:%02.3f"%(h, m, s)

fstart = parse_time(start)
fend = parse_time(end)
faudio_trim = parse_time(audio_trim)

start_video = fstart
duration_video = fend - fstart
start_audio = fstart + faudio_trim

subtitles_arg = ""

if subtitles is not None:
    fd, name = tempfile.mkstemp(suffix=".srt")
    with open(subtitles, 'rb') as f:
        ind = 0
        for line in f:
            if ind == 1:
                ender = b''
                if line.endswith(b'\r\n'):
                    ender = b'\r\n'
                elif line.endswith(b'\n'):
                    ender = b'\n'
                [s, sep, e] = line.strip().split(b' ')
                line = b"%s %s %s%s"%(bytes(repr_time(parse_time(s.replace(b',', b'.')) - fstart).replace('.', ','), 'utf-8'), sep, bytes(repr_time(parse_time(e.replace(b',', b'.')) - fstart).replace('.', ','), 'utf-8'), ender)
            ind += 1
            if line.strip() == b'':
                ind = 0
            os.write(fd, line)
            subtitles_arg = "-vf subtitles=%r"%(name)

try:
    command = "ffmpeg -ss %0.3f -accurate_seek -t %0.3f -i %r -ss %0.3f -accurate_seek -t %0.3f -i %r -c:a aac -strict experimental -map 0:v:0 -map 1:a:0 -vf scale=1280x720 -sws_flags bilinear %s -af aresample=44100 %r"%(start_video, duration_video, video, start_audio, duration_video, audio, subtitles_arg, output)

    print(command)

finally:
    if subtitles is not None:
        os.close(fd)
        # os.remove(name)

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Hello World!</title>
    <!-- https://electronjs.org/docs/tutorial/security#csp-meta-tag -->
    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline';" />
  </head>
  <body>
    <video id="vid" width="1024" height="720" controls autobuffer preload>
      Your browser does not support the video tag.
    </video>
    <br />
    <br />
    <br />
    <div id="audio">
        Drag audio here
    </div>
    <br />
    Start: <input id="start" /><button id="start-btn">S</button>
    <br />
    End: <input id="end" /><button id="end-btn">S</button>
    <br />
    Lag: <input id="lag" /><button id="lag-btn">Calculate</button>
    <br />
    <div id="subtitles">
    </div>
    <button id="add-subtitle-btn">Add Subtitle</button>
    <br />
    <button id="create">ffmpeg_runner</button>
    <input type=textarea" id="ffmpeg" />
    <script>
      var rate = 30
      var vidfile;
      var audfile;
      var vid = document.getElementById("vid");
      vid.addEventListener('drop', (e) => {
        e.preventDefault();
        e.stopPropagation();

        for (const f of e.dataTransfer.files) {
          vidfile = f.path;
          vid.src = f.path;
        }
      });
      vid.addEventListener('dragover', (e) => {
        e.preventDefault();
        e.stopPropagation();
      });
      var aud = document.getElementById("audio");
      aud.addEventListener('drop', (e) => {
        e.preventDefault();
        e.stopPropagation();

        for (const f of e.dataTransfer.files) {
          audfile = f.path;
          aud.innerHTML = f.path;
        }
      });
      aud.addEventListener('dragover', (e) => {
        e.preventDefault();
        e.stopPropagation();
      });
      function next_frame() {
        vid.currentTime += 1/rate;
      }
      function previous_frame() {
        vid.currentTime -= 1/rate;
      }
      function next() {
        vid.currentTime += 5;
      }
      function previous() {
        vid.currentTime -= 5;
      }
      function start() {
        vid.currentTime = 0;
      }
      function pause() {
        vid.pause();
      }
      function play() {
        vid.play();
      }
      function toggle() {
        vid.paused?vid.play():vid.pause();
      }
      var ti;
      function interval (fn) {
        if (ti !== undefined) {
          window.cancelAnimationFrame(ti)
        }
        fn();
        ti = window.requestAnimationFrame(fn, 100);
      }
      document.addEventListener("keydown", event => {
        console.log(event.keyCode);
        if (event.target && event.target.tagName === "INPUT") {
          return;
        }
        if (event.keyCode === 32) {
          toggle();
          event.preventDefault();
	} else if(event.keyCode === 37) {
          interval(previous);
          event.preventDefault();
	} else if(event.keyCode === 39) {
          interval(next);
          event.preventDefault();
	} else if(event.keyCode === 13) {
          start();
          event.preventDefault();
	} else if(event.keyCode === 74) {
          interval(previous_frame);
          event.preventDefault();
	} else if(event.keyCode === 75) {
          interval(next_frame);
          event.preventDefault();
        }
      });
      document.addEventListener("keyup", event => {
        window.cancelAnimationFrame(ti);
        ti = undefined;
      });
      function setfn(id) {
        return function(event){
          document.getElementById(id).value = vid.currentTime;
        }
      }
      const ipcRenderer = require('electron').ipcRenderer;
      function calculate_lag() {
        if(vidfile === undefined) {
          alert("video is not here");
          return;
        }
        if(audfile === undefined) {
          alert("audio is not here");
          return;
        }
        document.getElementById("lag").value = ipcRenderer.sendSync('synchronous-message', [vidfile, audfile]).trim();
      }
      document.getElementById("start-btn").addEventListener("click", setfn("start"));
      document.getElementById("end-btn").addEventListener("click", setfn("end"));
      document.getElementById("lag-btn").addEventListener("click", calculate_lag);
      document.getElementById("add-subtitle-btn").addEventListener("click", (event) => {
        var ss = document.getElementById("subtitles");
        var c = document.createElement('p');
	c.innerHTML = `
          <input placeholder="start" /><button>S</button>
          <input placeholder="end" /><button>S</button>
          <input placeholder="text" style="width: 500px" />
	  <button>X</button>
        `;
        ss.appendChild(c);
        c.children[0].value = vid.currentTime;
        c.children[1].addEventListener("click", () => c.children[0].value = vid.currentTime);
        c.children[3].addEventListener("click", () => c.children[2].value = vid.currentTime);
        c.children[5].addEventListener("click", () => c.remove());
      });
      function create() {
        if(vidfile === undefined) {
          alert("video is not here");
          return;
        }
        if(audfile === undefined) {
          alert("audio is not here");
          return;
        }
        var start = Number(document.getElementById("start").value);
        var end = document.getElementById("end").value;
        var lag = document.getElementById("lag").value;
        var subtitles = document.getElementById("subtitles").children;
        if(start === '') {
          alert("start is not here");
          return;
        }
        if(end === '') {
          alert("end is not here");
          return;
        }
        if(lag === '') {
          alert("lag is not here");
          return;
        }
        var subs = [];
        for (var c of subtitles) {
          var st = c.children[0].value;
          var en = c.children[2].value;
          var tx = c.children[4].value;
          if(st === '') {
            alert("start for subtitle is not here");
            return;
          }
          if(en === '') {
            alert("end for subtitle is not here");
            return;
          }
          if(tx === '') {
            alert("text for subtitle is not here");
            return;
          }
          subs.append({
            "start": Number(st),
            "end": Number(en),
            "text": tx,
          })
        }
        document.getElementById("ffmpeg").value = ipcRenderer.sendSync('ffmpeg', {vidfile, audfile, start, end, lag, subs}).trim();
      }
      document.getElementById("create").addEventListener("click", create);
    </script>
  </body>
</html>


## lag.py
#!/usr/bin/env python

with open('lag-audio.raw', 'rb') as f:
    x = f.read()
with open('lag-video.raw', 'rb') as f:
    y = f.read()

import numpy as np
a = np.frombuffer(x, dtype=np.int16)
v = np.frombuffer(y, dtype=np.int16)

m = None
ii = -1

from tqdm import tqdm
import math

START = len(v) / 2

RATE = 44100

T = 2 * RATE
JUMP = RATE/100
tt = tqdm(range(0, len(a) - T, JUMP))

for i in tt:
    r = np.corrcoef(a[i:i+T], v[START:START + T])[0,1]
    if m is None or m < r or math.isnan(m):
        m = r
        ii = i
        tt.set_description("setting m to " + str(m) + " ii to " + str(ii))

tt = tqdm(range(ii - JUMP, ii + JUMP + 1))
for i in tt:
    r = np.corrcoef(a[i:i+T], v[START:START + T])[0,1]
    if m is None or m < r or math.isnan(m):
        m = r
        ii = i
        tt.set_description("setting m to " + str(m) + " ii to " + str(ii))

na = a[ii:]
nv = v[START:]

with open('lag-newaudio.raw', 'wb') as f:
    f.write(na.tobytes())

with open('lag-newvideo.raw', 'wb') as f:
    f.write(nv.tobytes())


print(1.0 * (ii - START) / RATE)

## lag.sh
#!/bin/bash

if [ "$#" != "2" ]; then
	echo "usage lag <video> <audio>"
	exit 1
fi


ffmpeg -y -ss 10 -accurate_seek -t 02:00 -i $2 -f s16le -acodec pcm_s16le -ar 44100 lag-audio.raw
ffmpeg -y -ss 10 -accurate_seek -t 02:00 -i $1 -f s16le -acodec pcm_s16le -ar 44100 -map_channel 0.1.0 lag-video.raw
I=`python2 lag.py`
ffmpeg -y -f s16le -acodec pcm_s16le -ar 44100 -i lag-newaudio.raw lag-audio.wav
ffmpeg -y -f s16le -acodec pcm_s16le -ar 44100 -i lag-newvideo.raw lag-video.wav
ffmpeg -y -i lag-audio.wav -i lag-video.wav -filter_complex "[0:a][1:a]amerge=inputs=2[a]" -map "[a]" lag-total.wav
vlc lag-total.wav
echo "=================================================="
echo $I

## main.js


const { app, BrowserWindow, dialog, ipcMain } = require('electron')

ipcMain.on('synchronous-message', function(event, arg) {
  var child = require('child_process').execFile;
  var executablePath = "/home/mie/aie/New/lag.sh"
  var parameters = arg;
  console.log(arg)

  child(executablePath, parameters, function(err, data) {
       console.log(err)
       event.returnValue = data.toString();
  });
});

var util = require("util");
var tmp = require("tmp");
var fs = require("fs");

function format_time(t) {
  return util.format("%02f:%02f:%02.3f", t/60/60, t/60, t).replace('.', ',');
}

ipcMain.on('ffmpeg', function(event, arg) {
  var {vidfile, audfile, start, end, lag, subs} = arg;
  var subname;
  if (subs.length > 0) {
    var t = "";
    for (var i in subs) {
      t += (i + 1) + "\r\n";
      t += format_time(s.start) + ' --> ' + format_time(s.end) + "\r\n";
      t += s.text;
      t += '\r\n\r\n';
    }
    var tmpobj = tmp.fileSync({ mode: 0644, prefix: 'subs-', postfix: '.srt' });
    subname = tmpobj.name;
    fs.writeSync(tmpobj.fd, t);
    fs.closeSync(tmpobj.fd);
  }
  var child = require('child_process').execFile;
  var executablePath = "ffmpeg_runner"
  var output = vidfile.replace(/\.mp4$/, "-processed.mp4")
  var parameters = [vidfile, audfile, start, end, lag, output];
  if (subname !== undefined) {
    parameters.append(subname);
  }

  child(executablePath, parameters, function(err, data) {
       console.log(err)
       event.returnValue = data.toString();
  });
});

function createWindow () {
  // Create the browser window.
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: true
    }
  })

  // and load the index.html of the app.
  win.loadFile('index.html')

  // Open the DevTools.
  // win.webContents.openDevTools()
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.whenReady().then(createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', () => {
  // On macOS it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', () => {
  // On macOS it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow()
  }
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.

## package.json
{
  "name": "app",
  "version": "1.0.0",
  "description": "",
  "main": "main.js",
  "scripts": {
    "start": "electron .",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "electron": "^8.2.0"
  },
  "dependencies": {
    "tmp": "^0.1.0"
  }
}
	#!/usr/bin/env python3

	# usage: eval `./runner.py VID_20200321_142302.mp4 Recording_9.m4a 0 00:01:40.76 45.2 p3oc.mp4 s3.srt`

	import sys
	import os
	import tempfile

	if len(sys.argv) not in [7, 8]:
	print("runner has to run with `runner <video> <audio> <start> <end> <audio_trim> <output> [<subtitle file>]`")
	exit(1)

	subtitles = None
	if len(sys.argv) == 8:
	subtitles = sys.argv.pop()

	[runner, video, audio, start, end, audio_trim, output] = sys.argv

	def parse_time(t):
	if isinstance(t, (bytes, bytearray)):
	t = str(t, "utf-8")
	t = t.replace(',', '.')
	xs = t.split(":")
	if len(xs) not in [1, 2, 3]:
	raise Exception("cannot parse %r time"%(t))
	tot = 0
	for i in xs:
	tot = tot * 60 + float(i)
	return tot

	def repr_time(t):
	s = t % 60
	t = int(t / 60)
	m = t % 60
	t = int(t / 60)
	h = t
	return "%02.0f:%02.0f:%02.3f"%(h, m, s)

	fstart = parse_time(start)
	fend = parse_time(end)
	faudio_trim = parse_time(audio_trim)

	start_video = fstart
	duration_video = fend - fstart
	start_audio = fstart + faudio_trim

	subtitles_arg = ""

	if subtitles is not None:
	fd, name = tempfile.mkstemp(suffix=".srt")
	with open(subtitles, 'rb') as f:
	ind = 0
	for line in f:
	if ind == 1:
	ender = b''
	if line.endswith(b'\r\n'):
	ender = b'\r\n'
	elif line.endswith(b'\n'):
	ender = b'\n'
	[s, sep, e] = line.strip().split(b' ')
	line = b"%s %s %s%s"%(bytes(repr_time(parse_time(s.replace(b',', b'.')) - fstart).replace('.', ','), 'utf-8'), sep, bytes(repr_time(parse_time(e.replace(b',', b'.')) - fstart).replace('.', ','), 'utf-8'), ender)
	ind += 1
	if line.strip() == b'':
	ind = 0
	os.write(fd, line)
	subtitles_arg = "-vf subtitles=%r"%(name)

	try:
	command = "ffmpeg -ss %0.3f -accurate_seek -t %0.3f -i %r -ss %0.3f -accurate_seek -t %0.3f -i %r -c:a aac -strict experimental -map 0:v:0 -map 1:a:0 -vf scale=1280x720 -sws_flags bilinear %s -af aresample=44100 %r"%(start_video, duration_video, video, start_audio, duration_video, audio, subtitles_arg, output)

	print(command)

	finally:
	if subtitles is not None:
	os.close(fd)
	# os.remove(name)
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>Hello World!</title>
	<!-- https://electronjs.org/docs/tutorial/security#csp-meta-tag -->
	<meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline';" />
	</head>
	<body>
	<video id="vid" width="1024" height="720" controls autobuffer preload>
	Your browser does not support the video tag.
	</video>
	<br />
	<br />
	<br />
	<div id="audio">
	Drag audio here
	</div>
	<br />
	Start: <input id="start" /><button id="start-btn">S</button>
	<br />
	End: <input id="end" /><button id="end-btn">S</button>
	<br />
	Lag: <input id="lag" /><button id="lag-btn">Calculate</button>
	<br />
	<div id="subtitles">
	</div>
	<button id="add-subtitle-btn">Add Subtitle</button>
	<br />
	<button id="create">ffmpeg_runner</button>
	<input type=textarea" id="ffmpeg" />
	<script>
	var rate = 30
	var vidfile;
	var audfile;
	var vid = document.getElementById("vid");
	vid.addEventListener('drop', (e) => {
	e.preventDefault();
	e.stopPropagation();

	for (const f of e.dataTransfer.files) {
	vidfile = f.path;
	vid.src = f.path;
	}
	});
	vid.addEventListener('dragover', (e) => {
	e.preventDefault();
	e.stopPropagation();
	});
	var aud = document.getElementById("audio");
	aud.addEventListener('drop', (e) => {
	e.preventDefault();
	e.stopPropagation();

	for (const f of e.dataTransfer.files) {
	audfile = f.path;
	aud.innerHTML = f.path;
	}
	});
	aud.addEventListener('dragover', (e) => {
	e.preventDefault();
	e.stopPropagation();
	});
	function next_frame() {
	vid.currentTime += 1/rate;
	}
	function previous_frame() {
	vid.currentTime -= 1/rate;
	}
	function next() {
	vid.currentTime += 5;
	}
	function previous() {
	vid.currentTime -= 5;
	}
	function start() {
	vid.currentTime = 0;
	}
	function pause() {
	vid.pause();
	}
	function play() {
	vid.play();
	}
	function toggle() {
	vid.paused?vid.play():vid.pause();
	}
	var ti;
	function interval (fn) {
	if (ti !== undefined) {
	window.cancelAnimationFrame(ti)
	}
	fn();
	ti = window.requestAnimationFrame(fn, 100);
	}
	document.addEventListener("keydown", event => {
	console.log(event.keyCode);
	if (event.target && event.target.tagName === "INPUT") {
	return;
	}
	if (event.keyCode === 32) {
	toggle();
	event.preventDefault();
	} else if(event.keyCode === 37) {
	interval(previous);
	event.preventDefault();
	} else if(event.keyCode === 39) {
	interval(next);
	event.preventDefault();
	} else if(event.keyCode === 13) {
	start();
	event.preventDefault();
	} else if(event.keyCode === 74) {
	interval(previous_frame);
	event.preventDefault();
	} else if(event.keyCode === 75) {
	interval(next_frame);
	event.preventDefault();
	}
	});
	document.addEventListener("keyup", event => {
	window.cancelAnimationFrame(ti);
	ti = undefined;
	});
	function setfn(id) {
	return function(event){
	document.getElementById(id).value = vid.currentTime;
	}
	}
	const ipcRenderer = require('electron').ipcRenderer;
	function calculate_lag() {
	if(vidfile === undefined) {
	alert("video is not here");
	return;
	}
	if(audfile === undefined) {
	alert("audio is not here");
	return;
	}
	document.getElementById("lag").value = ipcRenderer.sendSync('synchronous-message', [vidfile, audfile]).trim();
	}
	document.getElementById("start-btn").addEventListener("click", setfn("start"));
	document.getElementById("end-btn").addEventListener("click", setfn("end"));
	document.getElementById("lag-btn").addEventListener("click", calculate_lag);
	document.getElementById("add-subtitle-btn").addEventListener("click", (event) => {
	var ss = document.getElementById("subtitles");
	var c = document.createElement('p');
	c.innerHTML = `
	<input placeholder="start" /><button>S</button>
	<input placeholder="end" /><button>S</button>
	<input placeholder="text" style="width: 500px" />
	<button>X</button>
	`;
	ss.appendChild(c);
	c.children[0].value = vid.currentTime;
	c.children[1].addEventListener("click", () => c.children[0].value = vid.currentTime);
	c.children[3].addEventListener("click", () => c.children[2].value = vid.currentTime);
	c.children[5].addEventListener("click", () => c.remove());
	});
	function create() {
	if(vidfile === undefined) {
	alert("video is not here");
	return;
	}
	if(audfile === undefined) {
	alert("audio is not here");
	return;
	}
	var start = Number(document.getElementById("start").value);
	var end = document.getElementById("end").value;
	var lag = document.getElementById("lag").value;
	var subtitles = document.getElementById("subtitles").children;
	if(start === '') {
	alert("start is not here");
	return;
	}
	if(end === '') {
	alert("end is not here");
	return;
	}
	if(lag === '') {
	alert("lag is not here");
	return;
	}
	var subs = [];
	for (var c of subtitles) {
	var st = c.children[0].value;
	var en = c.children[2].value;
	var tx = c.children[4].value;
	if(st === '') {
	alert("start for subtitle is not here");
	return;
	}
	if(en === '') {
	alert("end for subtitle is not here");
	return;
	}
	if(tx === '') {
	alert("text for subtitle is not here");
	return;
	}
	subs.append({
	"start": Number(st),
	"end": Number(en),
	"text": tx,
	})
	}
	document.getElementById("ffmpeg").value = ipcRenderer.sendSync('ffmpeg', {vidfile, audfile, start, end, lag, subs}).trim();
	}
	document.getElementById("create").addEventListener("click", create);
	</script>
	</body>
	</html>
	#!/usr/bin/env python

	with open('lag-audio.raw', 'rb') as f:
	x = f.read()
	with open('lag-video.raw', 'rb') as f:
	y = f.read()

	import numpy as np
	a = np.frombuffer(x, dtype=np.int16)
	v = np.frombuffer(y, dtype=np.int16)

	m = None
	ii = -1

	from tqdm import tqdm
	import math

	START = len(v) / 2

	RATE = 44100

	T = 2 * RATE
	JUMP = RATE/100
	tt = tqdm(range(0, len(a) - T, JUMP))

	for i in tt:
	r = np.corrcoef(a[i:i+T], v[START:START + T])[0,1]
	if m is None or m < r or math.isnan(m):
	m = r
	ii = i
	tt.set_description("setting m to " + str(m) + " ii to " + str(ii))

	tt = tqdm(range(ii - JUMP, ii + JUMP + 1))
	for i in tt:
	r = np.corrcoef(a[i:i+T], v[START:START + T])[0,1]
	if m is None or m < r or math.isnan(m):
	m = r
	ii = i
	tt.set_description("setting m to " + str(m) + " ii to " + str(ii))

	na = a[ii:]
	nv = v[START:]

	with open('lag-newaudio.raw', 'wb') as f:
	f.write(na.tobytes())

	with open('lag-newvideo.raw', 'wb') as f:
	f.write(nv.tobytes())


	print(1.0 * (ii - START) / RATE)
	#!/bin/bash

	if [ "$#" != "2" ]; then
	echo "usage lag <video> <audio>"
	exit 1
	fi


	ffmpeg -y -ss 10 -accurate_seek -t 02:00 -i $2 -f s16le -acodec pcm_s16le -ar 44100 lag-audio.raw
	ffmpeg -y -ss 10 -accurate_seek -t 02:00 -i $1 -f s16le -acodec pcm_s16le -ar 44100 -map_channel 0.1.0 lag-video.raw
	I=`python2 lag.py`
	ffmpeg -y -f s16le -acodec pcm_s16le -ar 44100 -i lag-newaudio.raw lag-audio.wav
	ffmpeg -y -f s16le -acodec pcm_s16le -ar 44100 -i lag-newvideo.raw lag-video.wav
	ffmpeg -y -i lag-audio.wav -i lag-video.wav -filter_complex "[0:a][1:a]amerge=inputs=2[a]" -map "[a]" lag-total.wav
	vlc lag-total.wav
	echo "=================================================="
	echo $I


	const { app, BrowserWindow, dialog, ipcMain } = require('electron')

	ipcMain.on('synchronous-message', function(event, arg) {
	var child = require('child_process').execFile;
	var executablePath = "/home/mie/aie/New/lag.sh"
	var parameters = arg;
	console.log(arg)

	child(executablePath, parameters, function(err, data) {
	console.log(err)
	event.returnValue = data.toString();
	});
	});

	var util = require("util");
	var tmp = require("tmp");
	var fs = require("fs");

	function format_time(t) {
	return util.format("%02f:%02f:%02.3f", t/60/60, t/60, t).replace('.', ',');
	}

	ipcMain.on('ffmpeg', function(event, arg) {
	var {vidfile, audfile, start, end, lag, subs} = arg;
	var subname;
	if (subs.length > 0) {
	var t = "";
	for (var i in subs) {
	t += (i + 1) + "\r\n";
	t += format_time(s.start) + ' --> ' + format_time(s.end) + "\r\n";
	t += s.text;
	t += '\r\n\r\n';
	}
	var tmpobj = tmp.fileSync({ mode: 0644, prefix: 'subs-', postfix: '.srt' });
	subname = tmpobj.name;
	fs.writeSync(tmpobj.fd, t);
	fs.closeSync(tmpobj.fd);
	}
	var child = require('child_process').execFile;
	var executablePath = "ffmpeg_runner"
	var output = vidfile.replace(/\.mp4$/, "-processed.mp4")
	var parameters = [vidfile, audfile, start, end, lag, output];
	if (subname !== undefined) {
	parameters.append(subname);
	}

	child(executablePath, parameters, function(err, data) {
	console.log(err)
	event.returnValue = data.toString();
	});
	});

	function createWindow () {
	// Create the browser window.
	const win = new BrowserWindow({
	width: 800,
	height: 600,
	webPreferences: {
	nodeIntegration: true
	}
	})

	// and load the index.html of the app.
	win.loadFile('index.html')

	// Open the DevTools.
	// win.webContents.openDevTools()
	}

	// This method will be called when Electron has finished
	// initialization and is ready to create browser windows.
	// Some APIs can only be used after this event occurs.
	app.whenReady().then(createWindow)

	// Quit when all windows are closed.
	app.on('window-all-closed', () => {
	// On macOS it is common for applications and their menu bar
	// to stay active until the user quits explicitly with Cmd + Q
	if (process.platform !== 'darwin') {
	app.quit()
	}
	})

	app.on('activate', () => {
	// On macOS it's common to re-create a window in the app when the
	// dock icon is clicked and there are no other windows open.
	if (BrowserWindow.getAllWindows().length === 0) {
	createWindow()
	}
	})

	// In this file you can include the rest of your app's specific main process
	// code. You can also put them in separate files and require them here.
	{
	"name": "app",
	"version": "1.0.0",
	"description": "",
	"main": "main.js",
	"scripts": {
	"start": "electron .",
	"test": "echo \"Error: no test specified\" && exit 1"
	},
	"author": "",
	"license": "ISC",
	"devDependencies": {
	"electron": "^8.2.0"
	},
	"dependencies": {
	"tmp": "^0.1.0"
	}
	}