paste code into browser devtools js console (F12 in most of internet browsers, search for "CONSOLE") and press enter to get chapters list, list of tracks shuld be printed below.

#youtube-extracting-song-s-titles-from-mixtape-videos.js

/* Sett Sarverott @ 2021 */
var d="YT-mixtape.";
var z=window.location.href.split("?")[1].split("&");
for(var i in z)
  if(
    z[i].split("=")[0]=="v"
  )
    d+=z[i].split("=")[1]+".";
d+="txt\n\n~~~~~~\n";
var y=document.getElementsByTagName("yt-formatted-string");
for(var i in y)
  if(
    typeof y[i].classList!="undefined"
    &&  
    y[i].classList.contains("style-scope")
    &&
    y[i].classList.contains("ytd-video-primary-info-renderer")
    &&
    !y[i].classList.contains("super-title")
  )
    d+=y[i].innerHTML+"\n";
d+=window.location.href;
d+="\n~~~~~~\n";
var x=document.getElementsByTagName("h4");
for(var i in x)
  if(
    typeof x[i].innerHTML!="undefined"
    &&
    x[i].classList.contains("style-scope")
    &&
    x[i].classList.contains("ytd-macro-markers-list-item-renderer")
  )
    d+=x[i].innerHTML+"\n";
console.log(d);

how-to-open-devtools-links.md

• chrome: https://developer.chrome.com/docs/devtools/open/
• firefox: https://developer.mozilla.org/en-US/docs/Tools
• edge: https://docs.microsoft.com/en-us/microsoft-edge/devtools-guide-chromium/open/?tabs=cmd-Windows
• opera: https://help.opera.com/en/opera36/explore-advanced-features/#developerTools

more oprions: https://grantwinney.com/how-do-i-view-the-dev-console-in-my-browser/

output-example.txt

YT-mixtape.m9H4kmrrDa0.txt

~~~~~~
VIRUS - A Cold Darksynth Synthwave Mix
18 mar 2020
https://www.youtube.com/watch?v=m9H4kmrrDa0
~~~~~~
Dawnrazer - Death or Glory
Speed Machine - Bionic Chase
Speed Machine - Chrome Armor
Funeral Director - Downstairs
Chaos Vector - Forged in Chaos
MASKED - Guns N’ Knife
Dav Dralleon - Horizon Set Ablaze
Battlejuice - Horror Show
Mercury-82 - Icarus 2
we are magonia - Running With Scissors
Day Dralleon - Sword Ov Saturn

Tested on chromium v95.0.4638.69
IT'S WORKING 🎉
should work well on google chrome, opera and edge

Tested on firefox v94.0 (64bit) for ubuntu
IT'S WORKING 🎉