My most disliked recent video

[EEVblog]

Well that's interesting. Of the last 4 videos, the one with the greatest dislike ratio is the heat sink design video. The video that is arguably the most on-topic for electronics design.
 

[OwO]

on youtube a 3% dislike rate is nothing.

[Psi]

Also, of your viewership, the number of people who will actually design their own heatsink will be relatively small.
Compared to a more general video which will appeal to more people.

[chris_leyson]

I liked it  It's an important topic. Thanks for the Saturn PCB tools heads up.

[ogden]

Also, of your viewership, the number of people who will actually design their own heatsink will be relatively small.

Exactly. One of YT problems: there are just one two buttons. Some may press "dislike" to signal another meaning, such as "bored because contents irrelevant to me". Disclaimer: I pressed like to promote channel, thou lost attention quickly and did not watch whole episode, sorry.

[edit] I agree that 3% dislikes are "below noise floor"

[frozenfrogz]

Also, you are comparing a just recently released video to others that have been up longer.

-> absolute vs. relative figures

How does it all compare to initial responses, say only comparing reactions of the first 12 hours for every video?

In absolute terms, 34 dislikes are less then 57 dislikes for the 4K TV video. So....

[nctnico]

Well that's interesting. Of the last 4 videos, the one with the greatest dislike ratio is the heat sink design video. The video that is arguably the most on-topic for electronics design.
 

Thanks for making me feel weird. I liked the custom heatsink video because it showed something new (for me) and something I had not thought about ever before. Maybe the least liked videos are actually the most interesting ones 

[ogden]

Maybe the least liked videos are actually the most interesting ones 

It clearly depends on video versus who is watching. EEVblog channel most likely have broad audience - from beginners to hardcore professionals. Some advanced video may get "dislikes" from beginners, some snobs may rate production quality instead of contents and so on...

[NivagSwerdna]

Personally I liked the heat sink video.... but.... it kept stopping and showing ads in the middle... didn't like that.

[EEVblog]

How does it all compare to initial responses, say only comparing reactions of the first 12 hours for every video?

That's why I noticed it, because the initial ratio is higher than usual, not something I'd ordinarily see for such an on-topic technical design video.
The views are normally lower on these types of videos for obvious appeal reasons, but the dislikes are usually pretty small as well, like 1% or less.

[EEVblog]

It clearly depends on video versus who is watching. EEVblog channel most likely have broad audience - from beginners to hardcore professionals. Some advanced video may get "dislikes" from beginners, some snobs may rate production quality instead of contents and so on...

Yes, many reasons. I know a couple of viewers who said they dislike every time I include a "clickbait" thumbnail, which means any thumbnail with text on it 

[WN1X]

Maybe someone is stuffing the dislike box?  Have you looked at the demographics for the dislikes?

I found the heat sink video very interesting and something I had never considered before 

[Brumby]

I liked it.   

[ogden]

The views are normally lower on these types of videos for obvious appeal reasons, but the dislikes are usually pretty small as well, like 1% or less.

What about #1103 with 4% dislikes? #1104 is better but far from 1%. I like both very much and 4% is puzzling. Unless dislikes skyrocket for some video, most likely you shall just ignore them - because you have broad audience. Maybe views/dislikes is better measure? On the other hand you have 633k subscribers and you wonder about ~40 who pressed dislike? - Better invest your time into next video

[coppercone2]

heat sink is a expensive component, they want to use the PCB to carry 95 amps in a 3d printed plastic chassis. bus bars and heat sinks make people rage, so does heavy gauge wire

is this component OK at 120C for long term use??


for them its better such components are forgotten

[tpowell1830]

I liked the video, however, I rarely click the like button because every video in which I click the like button gets put on my YT channel for future reference. The reason is that I only press the like button because it is about something that I want to do, but have no idea "how-to" and my channel "liked" videos is my library of knowledge squirreled away until I need the information. I have my channel setup so that when I press a like button, the video is posted on my videos page.

Bottom line, the only time that I will "like" a video is if it is completely out of my expertise, comprehensive and accurate, and I intend to utilize the knowledge for some project. This way, I let YT take the hit of being my librarian for unknown (for me) skills. When I get around to doing a project in which I need this information, I need look no further than my own channel. So, if there are others like me out there that only click for the aforementioned reasons, the "like" to "unlike" ratio is pointless and skewed. If I clicked the like button for every video that I liked from Dave, it would be very close to 100%.   

EDIT: I very rarely press the dislike button because I know that it may possibly affect someones' livelihood (means to get paid). I know this a rare thing, thinking about someone else other than yourself, but some of us do actually think that way. Who am I to judge whether it is a good or bad video, we all have our own personal inner judges.

[Muttley Snickers]

Have you looked at the demographics for the dislikes?

If the dislikes were disturbingly disproportionate then this would probably be a good place to start with to ascertain the cause. For all we know there could be a boy band called Heat Sink and YouTubes a-lotto-rhythm is just recommending your video to a different audience.

[KaneTW]

Dislikes are meaningless, especially in statistically insignificant amounts.

[ebastler]

I would expect this video to get less likes than average: Only a small proportion of the users will be into electronics design and product integration deep enough to justify/require custom heatsinks. And it is not a "sexy", cool topic either. (Hmm, come to think of it, it might qualify as "cool" indeed...  )

Whether a lack of interest is enough to trigger a dislike? Probably, for some people... But anyway, as others have said, no cause for alarm looking at the small number.

Edit: Arznei has a point in his post below. Now having watched the video, it does have annoyingly low information density. I sometimes enjoy Dave's rambling videos, but only if they are about something fun. For a technicality like this, I prefer to-the-point information.

[Arznei]

First off all, I don't want to come of as rude here. I didn't dislike the video, I don't think it deserves a dislike, but since you are mentioning the topic and I canceled the video halfway through on my first click, my *guess* is you *might* be interested in why I did so. Not that you should be and not that it matters (its like, still a pretty good liked video from the current like/dislike ratio and I would not consider it bad in any way shape or form).

When I watched the video it just didn't seem to have a high information density. When I was about 9 minutes in, I had the feeling the only thing that I had learned so far was that you had someone machine a custom piece of aluminium for you which you designed to fit on top of your board. That is pretty neat, but it's not a 9 minute topic of conversation. There was no mention of how many W/K this heatsink is going to dissipate, nor how many it needed to. Nothing was said about the design process of the heatsink since David 2 did it. You mention you did an earlier video about heatsinks where you *do* go into the specifics of such stuff. So at this point the video felt just like you were going to show a piece of aluminium into the camera for 24 minutes.

Now please, for the love of god, don't get me wrong. I do not mind that at all, but *maybe* others did and disliked because of that. Thats all I'm saying. Me personally, I could listen to you rambling on for hours (and sometimes I do) just because I think you have a nice voice and the topics are relatable for me.

I really hope this post doesn't come off as rude. English is not my first language and I feel I might not have done a good enough job of expressing myself here.

[ataradov]

I'm with  Arznei. The amount of actual useful information on that is pretty low. "We think it will dissipate well enough" is not a good answer in a design video. If you are referring to some rule of thumb, it would be prudent to mention it.

Not mentioning suppliers is also annoying. People don't want to contact "any random factory in China". People want to see specific recommendation of factories that did the job right.

That being said, I did not like or dislike the video and watched it all in the background.

[Bud]

you had someone machine a custom piece of aluminium for you which you designed to fit on top of your board. That is pretty neat, but it's not a 9 minute topic of conversation

That says it all.

[coppercone2]

how is that not a 9 minute topic of discussion? its important.

[ebastler]

how is that not a 9 minute topic of discussion? its important.

But you just demonstrated how to get your point (which is important to you, and seems equal in complexity to the "someone machined a piece of metal for me") across in less than 9 minutes. 

[Brumby]

If you wanted pure data, Dave could have put together a datasheet on the heatsink.

What I saw in this video was the process.

As for not identifying the particular machine shop, I don't see a problem with that.  If he DID nominate the one he used, then there are two potential repercussions.  The first is criticism for using that business - because of this reason or that reason.  Dave would not want to offer any excuses for people to whinge.  The second is that there is nothing special about the business he chose and that there are alternative businesses that could have done the job.  Nominating one would be unfair to the rest.

As for the design itself and thermal efficiency, I imagine it was a matter of having a good gut feel for the amount of power needed to be dissipated and designing something which seemed appropriate to fit the envelope (an important criteria here).  Whether it is adequate will be found in testing - which would have to be done regardless.  If it's inadequate, then they will have an idea of how inadequate it is and the next evolution will address that.  However, experience provides the ability to assess and decide how to approach a particular problem without having to go through a lengthy mathematical process.  I don't doubt we will see how this heatsink performs as the project progresses.