What network cable should you buy? - Overview of Ethernet cables (cat 5e vs cat 6 vs cat 8) 

I have been the lead product designer for 3 different low voltage cable companies over the past 20 years. Cat 8 is nice because it can handle the 40GB fiber speeds, but is backwards compatible with legacy equipment. So it handles the past and the future. If you are prewiring a house, this is a nice feature. It also supports POE, which fiber doesn’t. Also, I would have recommended a shielded cable for long runs as the cable is going to intersect high voltage lines and can interact with various lighting types.

Was thankful to be able to add CAT6a to my condo a few years ago. Managed to go from basement to 1st (4ports), 2nd (2ports), and 3rd floor (4ports) because I was doing some soundproofing work.

Ok, I gotta put some statements in here for everyone that is NOT from the US or Canada: 1. From numerous videos we all know how easy it is to re-cable, your North American wood-framed houses, but that does not apply for the rest of the world that is mainly relying on solid walls. In the old world, you have to plan ahead at least 25-30 years, because it is a huge cost-factor to actually open walls and put new cables into it. The "this will not get you something within the next 10 years"-argument does not cut it, if you are failing to take the next speed-bump in 11 years. As an example, my father in law renovated his house 20 years ago and put some Cat.7 cables which was the hot new stuff 20 years ago, but never used them. Now that I'm actually putting a proper network into his home this means we do not have to open the walls in an entire floor and just top-up some rooms and as he wants 10g, it would have been depressing if he fell for a "this will do the job" argument and had installed 5e instead. It ALWAYS makes sense to go for an up-to-date cable for the time which you will profit from later on. 2. You should not use patch cables for a demonstration that is about installation cables with solid cores. Also, you should have mentioned the difference between the shielded and unshielded versions. 3. Here in central Europe, Cat.7 was and is the industry standard for quite some time, and the private sector pretty much adapted that. The reason is, that the cost difference is minimal, but you can pretty much skip the next cabling job, which makes you come out cheaper in the end. Also, the argument about "but the connectors for Cat.7 are so much more expensive" does not count, as you can exchange just the ones you need for high speeds later on and you have an upgraded connection without having to do any re-cabling at all. 4. The argument about shielding "that sometimes does more harm than it helps" (your comment) is yet to be explained. Shielding does nothing if you don't connect it, it just makes the cable stiffer, which is bad for the cabling comfort, but good to protect the cables from kinking. If you connect the shielding properly to ground, it ALWAYS helps. There is simply no scenario where shielding makes things worse. 5. "The cables will not fit into your connectors"? What connectors are you guys using? The best cables I typically use is Draka 1500MHz Cat.7a cable. That is AWG22 and pretty much has the same shielding as Cat.8. They are about 1.5x to twice as thick and stiff as your typical Cat.6a/Cat.7 cables, and I NEVER had any problems stamping them in or terminating them with a keystone. Maybe you might run into problems trying to crimp some random RJ45 connectors onto it, but... well... that is bad practice anyway =) Do I recommend Cat.8? No. But I definitely don't recommend Cat.6 either. The difference between between Cat.6a and Cat.7 is minimal, but as they also cost just as much, I always recommend going for Cat.7. They might even be good enough to do very high speeds >10g later on for short runs and are just best practice. For enthusiasts, I always recommend a good Cat.7a cable that uses AWG22 and is certified for 1500MHz. Not only will these do 40Gb/s without a problem without the additional cost of Cat.8, but they are also ready for all the nice and new PoE standards supporting 60W+ going forward and if not needed for LAN, you can basically use them for anything, even KNX or other bus or direct steering systems. Just don't ever use unshielded cables. Just... don't... if you ever happen to get your hands on a proper Fluke or other certification tool, you will understand where I'm coming from. However, I fully agree on the fiber part. If you are enthusiast and you have open walls: Put OM4/OS2 into it. Just leave it there and be happy later on.

Thank you. I was on Amazon and saw cat 8. Did research and saw your video. Awesome 👌

For those who got excited when he popped up "high interference environments" on the lower third when talking about CAT8: CAT6 and CAT6A come in the STP (shielded twisted pairs) flavor. While the shielding will still offer a little more of a nuisance if you're terminating your own cables, it should be considerably easier and less costly than CAT8, while maintaining compatibility with your existing ports.

Considering how much work it takes to run the cables and the moderate price for the cables, even the price for cat 7 or cat 8 isnt much in my opinion, then I would anytime take the highest standard available. -If not for anything else, then to avoid changing the cables in 10-15 years!

Just finished upgrading my cat5e to 6a, and you are absolutely correct it is much harder to work with. That being said if you are going to go through the trouble of doing it I figure might as well do it right.

The best and clearest explanation I've found, thank you!

Well, that problem with CAT8 lies typically not with the cable, but the connectors. They also have to pass the very stringent shielding requirements. So initially they developed some type of new connector for CAT 7, but that was not adopted by the market at all - to CAT8 will be similar to RJ45 again. In 99% of the home applications CAT6a should be enough. We run CAT8 with special connectors from Dätwyler at our lab, but it is for some very specific Matrix KVM system, pretty expensive.

I put cat6 solid in my house. It was no more difficult than running any other cable/wire thru the wall. The only issue I ran into was not the cable itself, but fire blocks on the first floor. I have a two story house and every room (including the kitchen and dinning room has ethernet). If you are wiring up your house, get cat6 solid wire. It's easy to run, terminate, and offers great future proofing.

if you're just running ethernet cable for LAN, then you should use Cat6a. 6a is probably okay for most PoE devices too. However, if you're like me, and plan on making 4 - 8 runs to each room, then you'll most likely have a mixture of different categories of ethernet cabling. I'm running 10Gb LAN with redundancy to each room in my home. Half of the rooms will also be getting two runs of Cat8 double-shielded because I'm going to be running 4k/120 with HDCP and eARC support over ethernet. Cat6a won't/can't (in my experience) support more than 1080p/30. You stated and made a case for using fiber instead, however that doesn't work for my application as I'm not stripping all my walls down to the studs. For new construction, I would agree with the assessment of using fiber instead. You also mention that "Cat8 is difficult to work with" (like hard to punch down, etc) - you might be using the wrong tools and the wrong terminations. Cat8 typically will not work with cat6 terminations as the wires are normally a larger gauge. IE: I have grounded field termination keystones and RJ45 connectors for my Cat8 cable because the cat6 ones just won't work with the thicker wires.

One other thing, you have to differentiate between patch cabling and structural cabling (no idea if that term is correct, you use it for permanent runs). The CAT 6A and 5E cable you have shown is patch cabling therefore quite flexible, any structural cabling will be stiff, even CAT 5E cabling. And if the CAT 6A one has stranded wire, it might be patch cabling too, just with a bit more shielding than the CAT 6. Structural cabling usually has solid conductors that's also a part of why it's stiffer than patch cabling.

I have a small home network, basically everything wired under my giant desk, plus the wiring POE to my AC. I updated everything to CAT8 two years ago for about $250 (exposed by hidden, nothing in the walls). These cables need an alligator jaw to twist and turn. If I only knew... But my entire network is now future proofed for the next 15 years.

I used cat8 flat cable to my computer and xbox for my connection to the router and haven't had any issues. sure I has to open up the hole a bit more in the wire box but that's cuz theres already 3 other network cables going through the box. Wouldn't cat8 allow for future proofing of your network? even though they are trying to make wireless the main thing of the future.

Our family will be downsizing to a new home soon as we are at that point in our lives. Being the network nerd I am, I am thinking of just going ahead and running fiber to the drops. Not that many of the drops need that speed but if your going to run network cable I am thinking you cannot go wrong with fiber. I plan to just buy patch cables and use keystone jacks. No plans to try to terminate any fiber cables. Another factor in my decision has to do with lightning surges. Over the last few years I have lost several switches (twice) right after a nearby lightning strike. I have done all I know to do to add in surge protection and UPSs. And, I even have fiber right to the home, so it cannot come in via the cable. And, it still got me. I am sure it ran right down the network cables. There was no other way. So, I am thinking running fiber between the nodes / drop equipment would help electrically isolate all of the equipment. I already have a 10GbE aggregation switch and my office machines inter-connected. Not all of the equipment is 10GbE but at some point it probably will be and the infrastructure will be there. I have spent a ton of money replacing networking equipment. If the fiber isolates the lightning damage it will be well worth the cost.

Great guide. I'm using Cat 5e, and Cat 6 for longer runs. All of this in my living room, with the cables just run round.

The differences in those cables are much bigger than one can think and in the end one should buy what better fits his needs, something that can depend from different factors. The type of the shielding, the bandwidth (MHz), the distance to cover, the number of the machines connected, the internet speed provided by the ISP, if someone is running a server, if the cables have to pass inside the walls, if the person is planning to stay in that house for many years to come or for few years, etc. Everyone is different and has different needs. So, people have to inform themselves and think carefully what is best suited for their needs, now and in the long term. Cat 6A and Cat 8 may be rigid and difficult to pass through walls, but that's not a problem: the tubing where they have to pass can be large enough and with the help of some lubricant you will do it. The bandwidth is the speed at which the data is pushed inside the cable: the higher it is, the earlier it will reach destination. This can translate in less latency and in a more stable connection. So, for example, the cable that connects the modem to the ONT (optical network terminal) is better to be Cat 6A or 8, in my opinion.

Yeah 100% I agree with some of these comments but also agree with points made in the video. If you are going for a new home install I would just do cat8 so you are future proofing the house even if it's 10- 20 years that'll be a very nice thing to have instead of having to rewire the house later. I'm having to rewire things now and it's a total P.I.T.A!!! Also it's crazy how fast time flies! If you just need a cable right now to connect a device to like a router or whatever I would say cat8 is overkill 100%. I also agree with liking the POE option over fibre as this is great for security cameras etc.

Great video. I need 3 cables to go from the router to the PC/Laptops and I think I'll go with 6 just for increased flexibility.

Thanks for the pragmatic overview. I think we actually still have non-5e cables at home, lol.

My whole house was wired with Cat6 and Cat5e unshielded cable when it was built four years ago. I am finishing my basement and am wondering what I should use. What is the benefit of using Cat6a over Cat6 if it’s a short enough distance to ensure 10gbps with just the Cat6 cable? Also, will there be an issue using shielded Cat6a or even Cat8 cabling within this already established system? Will I need different ports installed?

Cannot agree with this video. For the tiny little difference in price, just go for cat8. Much more future proof!

Thanks I was just about to buy a Cat 8 cable and will go with cat 5e or 6, I have a question, my ISP has provided me with a cat 5e cable if I buy an additional cat 6 would I come across an issue? Also I am planning on plugging one cable into a gigabit switch and another cable into a console could experience additional issues with WI-FI and the two connections.

I live in an apartment and the noise levels here frequently cause issues with my Cat6 cables. All of them. Our computer’s frequently lose connection for several seconds at a time. Just long enough to lose whatever game or feed you were using. So I will be upgrading most of my Ethernet cables to Cat8 for this reason. If it doesn’t help, I’ll come back here and let ya know. However I’m pretty sure it will help with all the extra shielding.

Just subscribed! Huntsville Alabama born and raised lol good info thanks.

You've just saved me alot of money, Thank you!

The honesty. I don’t really have the work flow for that, I just want to. Not the actual quote, but basically what I tell my wife for every project

I would go for CAT6A :) price difference is negligible compared to cat5e and CAT6. Also CAT6A is shielded by default. Complexity isn't much higher either. Looked at specs of some CAT7 cables and they were no different than CAT6A only more expensive. Agree, CAT8 doesn't make a ton of sense. It costs a lot more with not a lot of benefits. SFP+ and SFP28 makes more sense than CAT8. Fiber uses less energy on high speeds. DACs have lowest latency, fiber latency is lower than Ethernet but the difference is so small that it won't matter for most. Energy Efficient Ethernet can negotiate speed down to 10Mbps to save power when not used actively.

Amazing vid, would add a little bit about the shielded and non cables because sometimes people buys them and then because they dont have a ground they have poor connection and then they think the cable is bad, do you have a vid about it?

I actually use Cat8 in my house. As for the ends I place 'pass-through' keystone jacks into the wall boxes so I don't have to 'punch down' the individual wires. I also use Cat8 because of the shielding. EMI can cause packet loss or sometimes a lot of 'noise' that affects the transmission of data. So for me I prefer Cat8 but Cat6a is a very good standard for most people. Use what your comfortable with. :)

Perfect timing for this video, I'm moving in two weeks, and need to wire the house. You probably should have mentioned the 100% copper core Vs CCA, and UTP Vs FTP imho.

Can you show how you run these through existing walls and floors?

@SpaceRex I am very curious when you said too much shielding can do more harm than good. Can you elaborate please?

It was really helpful man

I've noticed all of the cat 6a cables are using smaller gauge wire (26 awg - 28 awg) than the cat 6 (24 awg - 23 awg). What's up with that? Shouldn't thicker wires drop less voltage than the thinner ones over long distance?

CAT6A is shielded. You have to remove upto 3 layers before you can crimp an connector on it. There is CAT7 as well.

welcome to Huntsville. I've been here for about 4 years now. Moved from Philadelphia. You'll love this town.

I am planning to use a CAT-6 100 ft cable for 5 gig transmission from my T-Mobile gateway box to the router in my office. I get 5 bars of 5 GB reception at the box and really fast down and up load speeds in the area near my box using my Asus Chromebook. However, in my office (where I have two desktop PC units located) the speed is slower. Hopefully running the CAT-6 cable from the T-mobile box to the office router will speed things up.

I got a bunch of cat8 cables when I bought a lot of computer stuff, even though my entire network is 1gbit, I use what I got, Cat6 to my 1gbit swtich, and cat 8 to both my PC's. Plus its the only black cables I own, I got a dozen of cat5e cables, but they are either blue, white or yellow....

Regarding installation in walls, all these choices seem incredibly short sighted. My house is over 80 years old and I’m not planning to tear it down soon. Thinking about the next 10 or 15 years is not enough. I assure you the Ethernet standards that were available when my house was new are not sufficient for my needs now. I would install conduits in any new construction. Then you can easily change whatever technology you use every 10 years easily.

simple answer : it depends on your router, you're using typical 100/1000 mbps router, even CAT 5E is already enough, if your farthest device from your router are under 100 meters, you don't even need anything more than CAT 6 ethernet cable.

It's nice to see a presentation about Ethernet cable that doesn't talk nonsense. Incidentally, Gb Ethernet was designed to run up to 100M over plain CAT5 cable and predates 5e. In my condo, I have plain CAT5 and it was installed in the late 90s. I have worked with both CAT5e and CAT6 in my work, and there's not much difference in working with them. I have also installed fibre in data centres. Bottom line, as you said, 5e is fine for Gb and perhaps higher, though I haven't used it with anything above 1 Gb. But if I was putting in new cabling today, I'd likely go with CAT6.

Thanks Rex

I guess if I was installing cables myself cat 8 would be harder, but since I’d hire a pro to do the job I’m not concerned about how flexible the wire is.

I’m wondering what Ethernet cables I have inside my walls. House was built in 2007 and the electrician cabled the entire house and I think he said Cat 6. That’s always stuck in my mind but I can’t get inside the walls to check. The cables from wall to devices (TV, desktop PC etc) are all Cat6 or Cat6E so I’m guessing Cat 6 was the standard all those 16yrs ago

Also consider interference with deciding which category you are using not only the speed and distance higher cat are shielded

What a wonderfully informative and honest video. I loved it . Thanks Cat6 it is then 🙂

For what it is worth from a homeowner, I use CAT8 in the AV rack from the switch out to the A/V gear. Other than that, CAT6 everywhere else.

I am in total agreement on everything you said but I am still going with cat6A.

No offense, but for the few dollars more I did use Cat8 over a year ago in my house. All the runs were under 75 Feet (switch to garage connections). I didn't have any of the problems with the end connectors that you mention.* I seriously looked at fiber but despite living near Chicago I am isolated enough that my ISP has no plans for FTTH/FTTP in the next five years. Since I'm in my sixties I'm pretty sure the CAT8 connections are more future proof than I am. Unlike many I have no need for wireless to my devices and it was relatively easy to use a cable stapler to punch down the wires to studs. * I have a Nighthawk CM2000 modem, Synology DS1821+ NAS, and Mikrotek Switch, with all computers using ASUS 10g NIcs. None of these had issues with the connectors on the cat8, neither did my old HP laserjet. Not sure where you are seeing connector issues on the CAT8. I did all (20) CAT8 runs in the house for under $100.

I'm just plugging the ethernet cable from my pc straight to my gateway modem. It doesn't have to move around much either. I current have only 1gb fiber so it's probably a waste but some say the extra protection is worth it. That, and if I ever upgraded my plan I wouldn't need to get a better cat cable.

Welcome to Alabama. I’m just west of Huntsville next to Decatur. I’m trying to get Wi-Fi to my shop that is about 40-50ft from house. We just got fiber in our area and service installed last week. Have mesh 6 system in house. I was planning to run cat 5e to shop and buy separate router. I’m not sure how to connect this to the installed equipment. Gigaspire u6 mesh in house. Can you give any advice? Will my cat5e work? I’m just wanting to have Wifi security cameras and stream RU-vid on tv and just basic internet at shop. Thanks

Great tutorial

I ordered a Cat 7 before watching this video. Am I okay to hook this up form modem to router or could it harm one or the other?

I just bought cat 8 cables off amazon. Too bad I didnt find your video first. Will it still work? My pc has a 2.5gb ethernet but my connection does not.

Doesn't Cat 8 cables have much higher shielding compared to other cables and running at a higher frequency to avoid others signals from interfering with the signal?

👍Good information on ethernet cables.

so i have 2gbps coming in, but it tested at 2.24 on the installers test tool. What type of cable should i get?

Guys that keep saying don't get Cat8 just go with Cat 6 are the same type of guys that said, "You'll never need more than 32MB of ram" in the late 90s.

Also would I be going wrong in changing the GB settings on my Xbox in what my monitor gives me, in terms of visuals/graphics, there's an option that says what Gigabits you can choose...??

Install both fiber and cat6A since 1gig is fast becoming the norm and will soon go past 10gig easily.

The slowest denominator in networking can be anything. It could be the A.) The ISP, B.) The router, C.) the cables involved, D.) The environment of the network. When computer to computer via ethernet, CAT 8. To have the fastest internet, the fastest equipment and best environment is required. A radio signal rich environment would be dismal for wireless devices.

Looking at the comments everyone has there favorite CAT design, I personally went with 8 because it was the most expensive because I didn't know any better.

Hi Space Rex so what's the best Cat to use for gaming console I'm currently wired in with a Cat5 on Xbox one X not Next Gen, I want to be able to play at 1080p 120hz what's the difference in rj45 and sstp I'm new to all this

I have a cat8 Ethernet cable dbillionda connected to my Windstream modem to the ps4 slim is that bad like overkill? Because I noticed that it really doesn't change the speed. So I should I get a cat7?

Which is the best ethernet LAN cable to use with my LG OLED55C24LA ? Cat6 Cat7 or Cat8 ?

If you work in an industrial environment, Cat7 and Cat8 may make sense in only the shortest of runs. All cables with shielding and copper are antennas and will pick up RF interference, unless they have a proper drain wire grounded. Use fiber in these environments. It is far easier to run fiber to a media converter, and then patch into your devices on very short runs on Cat6 in this case. Having installs on a radio tower, Cat7/8 is useful, but still usually not good enough without custom ferrites and additional shielding sleeves. Not all shielding is the same, and not all cables that claim to be Cat6/7/8 are up to the real spec. Make your own if you are already in this category.

I was thinking of taking a small half-metre cat 8 cable to put it between my routher and the modem from the ISP. I am on fiber. Is it completely overkill? Absolutely zero benefit?

You should mention bandwidth differences between cables. Which is why I’d go higher

Good video, however, I'd like to also add that if you're running all new cabling, then CAT6 is where you want to be. On the point of CAT8, there is one main reason why you actually want to use CAT8, and that's if your internet is provided using a copper cable and your modem is a distance from your switch/router. CAT8 is more shielded than CAT6/5/5e and less prone to interference &/or noise, hence why it is thicker. A cable company's cable is a haven for line noise and is the #1 killer of internet speed. But, if you are lucky to have fiber, then CAT6 is all you'll need.

to Simplify : Cat 6 or Cat 5e = if you know its not forever home and you are in a budget Cat 6a = if you are building your forever home and use it all over it cat8 = for devices that you know will use that in the future for your forever home .. like AV appliances and computer areas

I actually brought 8 cat wore and works really good

well done

Thanks

First invest in conduit. Get those blue low voltage tubes from Home Depot and once you put it in you can pull anything that comes up in the future through it. Inexpensive and you can run anything anywhere later.

I used cat 8 cable to connect our router to the modem.

I recently upgraded to 400mbp download speed and 30mbp upload speed, I'm looking for a cable that's good for 60 or50 feet length im not sure which cat cable to get , any recommendations good reliable brands?

Hey great video but not accurate for a lot of use cases. I live outside of the US so our houses don’t have the same limitations as wooden houses in the US so routing cables isn’t an issue. That being said I live in a very large house around 24,600 sq ft with over 200 devices at any given time. For my use case I have a lot of ground to cover and I need at minimum 10Gbps speed all throughout. Going with CAT8 just makes sense for me even over fiber because. 1. PoE (PoE+/PoE++) for WiFi 6E/7 APs 2. Upto 40Gbps will future proof my house. If my ISP can do 10Gbps rn in the future they can do way more. For a slight increase in cost and difficulty we get to future proof our large property and well as reduce clutter and costs over not having PoE and having a bunch of transceivers.

Cat6 has a distance for 150m and cat6a 100m and cat7 40m and cat 8 only 30m

Huh? Cat8 is the best choice if you are doing a new install. The price is not really that much considering and it is future proof.

What made you move to Huntsville my guy? I've lived there before and have family there now.

Thanks I was about to drop double the money for a cat8 cable. Got my self a cat6 cable instead

They are up to CAT 15 now. Thickness of a garden hose and can do 100g for 25 miles.

I have CAT6 100ft run and it will not handle 10gb, Most I can get was 5gb. I switched that run to 6A and no problem. For most of the house CAT6 was just fine.

I used to live in Huntsville approx 10ys ago L😀L you gotta be square peg round hole for those parts Maybe Huntsville’s changed 🤷….. & thanks for the vid , I found myself here “tryin ta learn myself” about power over ip

i wired all my internet devices with cat 8 cables when i was on a 67MB fibre deal. no complaints. super fast fibre come to my area and ive gone with 500mb, using the same cat 8 cables and power lines im getting speeds ranging from 14 to 45mb. i spoke to BT customer service and theyve told me to pull out my cat 8 and replace it with cat 5e or cat 6e cables. does this make any logical sense? it doesnt to me but im not a professional i guess.

Yeah the only thing with cat 6 is that when networking device will evolve. You will have to replace all the cable in the house. I prefer to put 7A or 8 and never have to put new cable again.

Good video, although I'm somewhat amused by this debate. While I would have preferred my home be wired with CAT 6, it wasn't. But then again, virtually everything in my home is served wirelessly. And this is increasing. My laptops don't even have an ethernet port. My devices all run HD Video wirelessly without any issues. I'm dubious the future is wired.

I wired my house last year with cat 6. Im running one run at 10gbe with no issues and it's running from the basement up to the 2nd floor office.

You need to understand the impairments that cause cable to underperform. The hardest one to encounter is distant end non-correlated foreign cross talk. That happens in very long cables bundled with short cables at the far end. Most homes are not 300 feet in distance, they don't have large bundles 50+,so they will never encounter this. That's the usage case for Cat 8. Cat 5e works great at 50 feet at 10G. Cat 6 is all you need in a home if you don't live in Hearst Castle. The Cat 6 shield solves most of the distant end problems. Use fibre above 10G. Plastic fibre works great in a home. Use glass at a distance greater than 3,000 feet. Read the comments from IEEE 802.3 on cabling.

Which cable would be optimal for a gaming PC?

go fibre if you need to future proof or CAT.6A for POE. Let's see about WiFi 7 if there are any AP's that can reach 20 - 40GBit than maybe CAT.8 (or maybe in the first run 2*CAT.6A). Haven't seen any apliances that have a 40GBase-T connector "yet". If you've seen some please let me know.

I clicked to find out how fast the data transfer was not how thick the cable is.. I just need it to worm

Why I get only 50mbps with cat8 cable then previously cat 5 or 6 75mbps on my tv and pc?

Can you mix Cat 6 cables with a Cat 5E network?

Witch cable to use with android box/smart tv? Thanks

Get a lavalier mic for these videos. It will make a huge difference with the audio.

Thanks; very helpful,\

I was going to wrap my house with CAT 6 but CAT8 was only a few $$$ more. I purchased 3 runs, one 60 ft, 80 ft, and 100 ft all premade. Cables are external grade. If you are wrapping the house CAT 8 is not too bad. 🙂

interesting and useful video. however could be a little more brighter in terms of the background. also including chapter links in the video would be very useful and convenient.