What am I doing wrong to make 80 out of the 100 people who read a thread decide to not look at a video I linked in the thread?
You have to understand that just because somebody clicks on the thread doesn't mean that they will read the thread or read it with much interest. I know I click on a lot of threads, do a quick scan, and realize that the thread doesn't hold the information I wanted, doesn't have anything interesting, holds information contrary to my views, doesn't appear to be credible, etc. If any of those things happens, I am not likely to further spend time watching linked videos or reading linked articles.
I just looked at your previous thread. I didn't click on the video. Why?
The thread seemed to start off with an attitude issue and you seem to be responding to comments of "two jerks" in making the video. Not sure what that is about, but no reason to follow through.
You stated no relevance for the video in the opening before posting the video. Why do I need to watch the video?
And I don't understand your issue. You said, "For those who are interested..." Well, not everybody is interested.
You have a new toy. Cool. You don't seem to be saying anything special about it to make anyone necessarily want to watch the video. You described what you did, so why should anyone who isn't interested in doing the same thing necessarily want to watch the video?
The video is about a very specific tool with a specific modification. That limits viewership as well.
After posting the video, you include information expressing your ignorance/inexperience of operation and inattention to the topic, something about a granddaughters and playing with the video gear. These sorts of comments do not instill any sense of wanting to watch the video. In short, you are saying that you made a video showing off something you don't really understand and didn't pay attention to when making the video. That doesn't sound like good reasons for a person to want to watch the video.
Make sense?
As noted above, use of AV tools involves proper integration of the medium into the discussion at hand. To get people to view your video, they should probably need to have a clear understanding of why the video of part of the discussion and why they need to watch the video. This is for both logical reasons and promotional reasons. Like selling a product, if you want someone to watch the video, you have to create some need for them to watch. That need will often be one or more of the points or insights brought out in the video.
Always keep in mind that just because you made a video doesn't mean that it is relevant or necessary, though it may be interesting, but folks won't get that far if they don't have reason to believe that it is relevant, necessary, or interesting. Here, you sunk your own boat in making this come across.