How to list chapters in a YouTube video with yt-dlp and a useful utility.

┏jcartwright@jcartwright-System-Version╼╸╸╸╸╸╸╾
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━◉:~$ yt-dlp --dump-json https://www.youtube.com/watch?v=mACpIlAQ23M | jq --raw-output ".chapters[].title"
Intro
TIGER LADY
LIFELITE
BULLETPROOF BAG
MINIATURE COLT 1908
YELLOW JACKET PHONE CASE
TASER PULSE
BOLAWRAP
STUN RING
KNUCKLE DUSTER
HUAAO DART LAUNCHER
PEN PEPPER SPRAY
SPORK

function get_chapters_times() {
  paste <(yt-dlp --dump-json $1 | jq --raw-output ".chapters[].start_time" | awk '{printf("%d:%02d:%02d\n",($1/60/60%24),($1/60%60),($1%60))}') <(yt-dlp --dump-json $1 | jq --raw-output ".chapters[].title")
}

┏jcartwright@jcartwright-System-Version╼╸╸╸╸╸╸╾
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━◉:~$ get_chapters_times https://www.youtube.com/watch?v=mACpIlAQ23M
0:00:00	Intro
0:00:39	TIGER LADY
0:01:24	LIFELITE
0:02:07	BULLETPROOF BAG
0:03:00	MINIATURE COLT 1908
0:03:44	YELLOW JACKET PHONE CASE
0:04:28	TASER PULSE
0:05:12	BOLAWRAP
0:05:59	STUN RING
0:06:32	KNUCKLE DUSTER
0:07:07	HUAAO DART LAUNCHER
0:07:51	PEN PEPPER SPRAY
0:08:24	SPORK

┏jcartwright@jcartwright-System-Version╼╸╸╸╸╸╸╾
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━◉:~$ yt-dlp --dump-json https://www.youtube.com/watch?v=o1jv509M8Zg | jq --raw-output ".chapters[].title"
Car Gadgets Amazon
Fuse splitter
Quick release terminals
Shrink tubes
Round LED headlights
Impact screwdriver
Spray nozzle
Trunk organizer
Exhaust nozzle
Oil trap
Headlight Clarity Restoration Kit
Waterproof rubber markers
Tar cleaner
Clips for fixing mats
Cigarette lighter compressor
Headlight polishing kit
Plasma cutting machine
Chain wrench
Heated massage pad
Spray gun
Tool roll
Sandblasting gun
Combination wrench set
Metal Oil Can

┏jcartwright@jcartwright-System-Version╼╸╸╸╸╸╸╾
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━◉:/media/jcartwright/Media$ yt-dlp --split-chapters https://www.youtube.com/watch?v=9pi2wPgpuTo
[youtube] Extracting URL: https://www.youtube.com/watch?v=9pi2wPgpuTo
[youtube] 9pi2wPgpuTo: Downloading webpage
[youtube] 9pi2wPgpuTo: Downloading ios player API JSON
[youtube] 9pi2wPgpuTo: Downloading android player API JSON
[youtube] 9pi2wPgpuTo: Downloading m3u8 information
[info] 9pi2wPgpuTo: Downloading 1 format(s): 616+251-34
[hlsnative] Downloading m3u8 manifest
[hlsnative] Total fragments: 161
[download] Destination: Cheap and Cool Gadgets Under $50 [9pi2wPgpuTo].f616.mp4
[download] 100% of  237.93MiB in 00:03:27 at 1.14MiB/s
[download] Destination: Cheap and Cool Gadgets Under $50 [9pi2wPgpuTo].f251-34.webm
[download] 100% of   13.04MiB in 00:00:02 at 5.03MiB/s
[Merger] Merging formats into "Cheap and Cool Gadgets Under $50 [9pi2wPgpuTo].webm"
Deleting original file Cheap and Cool Gadgets Under $50 [9pi2wPgpuTo].f616.mp4 (pass -k to keep)
Deleting original file Cheap and Cool Gadgets Under $50 [9pi2wPgpuTo].f251-34.webm (pass -k to keep)
[SplitChapters] Splitting video by chapters; 39 chapters found
[SplitChapters] Chapter 001; Destination: Cheap and Cool Gadgets Under $50 - 001 Introduction [9pi2wPgpuTo].webm
[SplitChapters] Chapter 002; Destination: Cheap and Cool Gadgets Under $50 - 002 MagBeat [9pi2wPgpuTo].webm
[SplitChapters] Chapter 003; Destination: Cheap and Cool Gadgets Under $50 - 003 XEdge The Flounder [9pi2wPgpuTo].webm
[SplitChapters] Chapter 004; Destination: Cheap and Cool Gadgets Under $50 - 004 Keep Em Cool Vacuum Insulated Beer Bottle [9pi2wPgpuTo].webm
[SplitChapters] Chapter 005; Destination: Cheap and Cool Gadgets Under $50 - 005 Goat Story Coffee Mug [9pi2wPgpuTo].webm
[SplitChapters] Chapter 006; Destination: Cheap and Cool Gadgets Under $50 - 006 WILIT Bedside Table Lamp [9pi2wPgpuTo].webm
[SplitChapters] Chapter 007; Destination: Cheap and Cool Gadgets Under $50 - 007 Magnetic Levitation Desk Lamp [9pi2wPgpuTo].webm
[SplitChapters] Chapter 008; Destination: Cheap and Cool Gadgets Under $50 - 008 Folding Camping Stools [9pi2wPgpuTo].webm
[SplitChapters] Chapter 009; Destination: Cheap and Cool Gadgets Under $50 - 009 Black Shark Phone Cooler [9pi2wPgpuTo].webm
[SplitChapters] Chapter 010; Destination: Cheap and Cool Gadgets Under $50 - 010 Ventaron Magnito Mouse [9pi2wPgpuTo].webm
[SplitChapters] Chapter 011; Destination: Cheap and Cool Gadgets Under $50 - 011 ProtoArc EM03 Trackball Mouse [9pi2wPgpuTo].webm
[SplitChapters] Chapter 012; Destination: Cheap and Cool Gadgets Under $50 - 012 MuteMe [9pi2wPgpuTo].webm
[SplitChapters] Chapter 013; Destination: Cheap and Cool Gadgets Under $50 - 013 Snagger Snack Dispenser [9pi2wPgpuTo].webm
[SplitChapters] Chapter 014; Destination: Cheap and Cool Gadgets Under $50 - 014 Benks InvisiBoost Wireless Charger [9pi2wPgpuTo].webm
[SplitChapters] Chapter 015; Destination: Cheap and Cool Gadgets Under $50 - 015 RGBTRON Charging Station [9pi2wPgpuTo].webm
[SplitChapters] Chapter 016; Destination: Cheap and Cool Gadgets Under $50 - 016 FLEXTAILGEAR Tiny Pump [9pi2wPgpuTo].webm
[SplitChapters] Chapter 017; Destination: Cheap and Cool Gadgets Under $50 - 017 GEAR AID Heroclip Large [9pi2wPgpuTo].webm
[SplitChapters] Chapter 018; Destination: Cheap and Cool Gadgets Under $50 - 018 AIXPI Magnifying Glass [9pi2wPgpuTo].webm
[SplitChapters] Chapter 019; Destination: Cheap and Cool Gadgets Under $50 - 019 CrazyFun Aromatherapy Diffuser [9pi2wPgpuTo].webm
[SplitChapters] Chapter 020; Destination: Cheap and Cool Gadgets Under $50 - 020 WinDawn Aromatherapy Diffuser [9pi2wPgpuTo].webm
[SplitChapters] Chapter 021; Destination: Cheap and Cool Gadgets Under $50 - 021 JOYROOM Phone Stand with Speaker [9pi2wPgpuTo].webm
[SplitChapters] Chapter 022; Destination: Cheap and Cool Gadgets Under $50 - 022 Malboro & Kane Slash [9pi2wPgpuTo].webm
[SplitChapters] Chapter 023; Destination: Cheap and Cool Gadgets Under $50 - 023 MarsPlanter [9pi2wPgpuTo].webm
[SplitChapters] Chapter 024; Destination: Cheap and Cool Gadgets Under $50 - 024 Arcwares Mini Dryer [9pi2wPgpuTo].webm
[SplitChapters] Chapter 025; Destination: Cheap and Cool Gadgets Under $50 - 025 Infinity Gear Fidget Toy [9pi2wPgpuTo].webm
[SplitChapters] Chapter 026; Destination: Cheap and Cool Gadgets Under $50 - 026 Bernzomatic Digital Fuel Gauge [9pi2wPgpuTo].webm
[SplitChapters] Chapter 027; Destination: Cheap and Cool Gadgets Under $50 - 027 Chefman Mini Portable Eraser Board Personal Fridge [9pi2wPgpuTo].webm
[SplitChapters] Chapter 028; Destination: Cheap and Cool Gadgets Under $50 - 028 LASER DISTANCE MEASURE [9pi2wPgpuTo].webm
[SplitChapters] Chapter 029; Destination: Cheap and Cool Gadgets Under $50 - 029 Outdoor Camping Lamp [9pi2wPgpuTo].webm
[SplitChapters] Chapter 030; Destination: Cheap and Cool Gadgets Under $50 - 030 Camping Lantern [9pi2wPgpuTo].webm
[SplitChapters] Chapter 031; Destination: Cheap and Cool Gadgets Under $50 - 031 HX OUTDOORS EDC Tool [9pi2wPgpuTo].webm
[SplitChapters] Chapter 032; Destination: Cheap and Cool Gadgets Under $50 - 032 Trusyo Audio The Portal Headset Stand [9pi2wPgpuTo].webm
[SplitChapters] Chapter 033; Destination: Cheap and Cool Gadgets Under $50 - 033 SOULION R30 Plus Speakers [9pi2wPgpuTo].webm
[SplitChapters] Chapter 034; Destination: Cheap and Cool Gadgets Under $50 - 034 Noxgear Tracer2 [9pi2wPgpuTo].webm
[SplitChapters] Chapter 035; Destination: Cheap and Cool Gadgets Under $50 - 035 WEKOME Earphones [9pi2wPgpuTo].webm
[SplitChapters] Chapter 036; Destination: Cheap and Cool Gadgets Under $50 - 036 Marvel HIFI Sound Headset [9pi2wPgpuTo].webm
[SplitChapters] Chapter 037; Destination: Cheap and Cool Gadgets Under $50 - 037 M48 Mecha Headset [9pi2wPgpuTo].webm
[SplitChapters] Chapter 038; Destination: Cheap and Cool Gadgets Under $50 - 038 DarkWalker ShotPad Game Controller [9pi2wPgpuTo].webm
[SplitChapters] Chapter 039; Destination: Cheap and Cool Gadgets Under $50 - 039 Stylophone Synthesizer [9pi2wPgpuTo].webm