Learn How to effortlessly download, convert and split youtube videos using yt-dlp and ffmpeg software

Steps

run yt-dlp -U to update yt-dlb to the latest version (make sure it's a capital U and not lowercase u)
use one of the commands below

Downloads video file

yt-dlp -S "res:720" -o "%(title)s.%(ext)s" "YOUTUBE_VIDEO_URL"
Converts a single video to Mp3 format by extracting Audio from a video

yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 -o "%(title)s.%(ext)s" "YOUTUBE_VIDEO_URL" --ffmpeg-location "ffmpeg\bin"

Download All playlist videos and save them into a folder named with the playlist's title

yt-dlp -S "res:720" -o "%(playlist_title)s\%(title)s.%(ext)s" "YOUTUBE_PLAYLIST_URL"
Download All playlist videos, converts them to Mp3 and save them into a folder with the playlist's title

yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 -o "%(playlist_title)s\%(title)s.%(ext)s" "YOUTUBE_PLAYLIST_URL" --ffmpeg-location "ffmpeg\bin"
Download playlist videos starting from START to END and save them into a folder with the playlist's title

yt-dlp -S "res:720" -I "START:END" -o "%(playlist_title)s\%(title)s.%(ext)s" "YOUTUBE_PLAYLIST_URL"
Download certain videos from a playlist and save them into a folder with the playlist's title

yt-dlp -S "res:720" -I "2,5" -o "%(playlist_title)s\%(title)s.%(ext)s" "YOUTUBE_PLAYLIST_URL"
Download playlist videos from START:END, converts them to Mp3 and save them into a folder with the playlist's title

yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 -I "START:END" -o "%(playlist_title)s\%(title)s.%(ext)s" "YOUTUBE_PLAYLIST_URL" --ffmpeg-location "ffmpeg\bin"
Download certain videos from a playlist, them to Mp3 and save them into a folder with the playlist's title

yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 "res:144" -I "2,5" -o "%(playlist_title)s\%(title)s.%(ext)s" "YOUTUBE_PLAYLIST_URL" --ffmpeg-location "ffmpeg\bin"

FYI: you can replace %(playlist_title)s\%(title)s.%(ext)s with %(playlist_title)s\%(playlist_index)%s- (title)s.%(ext)s to save the video with it's index followed by it's name

Downloads video file, split it by chapters and saves them to a folder with the video's title

yt-dlp -S "res:720" -o "chapter:%(title)s\%(section_number)s - %(section_title)s.%(ext)s" --split-chapters "YOUTUBE_VIDEO_URL" --ffmpeg-location "ffmpeg\bin"
Downloads video file, convert them to Mp3 and split it by chapters and save them to a folder with the video's title

yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 -o "chapter:%(title)s\%(section_number)s - %(section_title)s.%(ext)s" --split-chapters "YOUTUBE_VIDEO_URL" --ffmpeg-location "ffmpeg\bin"

FYI: you can replace "chapter:%(title)s\%(section_number)s - %(section_title)s.%(ext)s" with "chapter:%(title)s\%(section_title)s.%(ext)s"

to save the video with the chapter name only without the index