I actually just wrote about this in a response to another post, but I felt I should share it for those who don't check that one out.

Lots of people will say use calls to action (yes, I do that), make sure your video quality is high, etc. But there is one thing that is key if you want someone to subscribe.

You need to make the viewer not only LIKE what they are watching, but feel they CAN'T get it on other channels.

This take charisma, style and things you can't really even define. But they need to like the way YOU present a video to them.

I took a look at my sub growth because I've been concerned... I get 200K to 400K views per month... but my sub growth isn't that great. I have 13K, but I don't grow nearly as fast as some other channels... that get less views.

I really put out two kinds of content. Comic convention coverage and original fandom content (which can range from reactions to tips to product reviews).

My comic convention coverage is often recordings of panels. Sure, I edit it, do zooms sometimes and make sure the audio quality is high... but the meat of the content has nothing to do with me. I get a lot of views on these and some subscribers as well. (Most popular panel video has 850K views... others can 400K or 200K or 150K... you get the idea)

My original content might be a costume review or a reaction video. Could be advice for going to a convention or some kind of news piece. In these videos, my personality and presentation style are displayed. I don't get as many views on these videos, but some of them do quite well. (My most popular original content video has 213K views, but then the others are down in the 40K or less range.)

Here's what I've found. The con panels get me views, but don't inspire loyalty. The most popular video on my channel, which is a panel recording, got my 1.6K subs. But for the views, it was 552 views for 1 sub. Other popular panel videos are around the same... 520 or so views for each sub.

Now my own content... the most popular original video has gotten me 1.3K subs... and based on views, it was 164 views for each sub. More recent original content has done better. 70-100 views for each sub.

So this tells me that content that viewers can't find elsewhere... in other words, content that features ME... is more likely to get a subscriber than content that, even though it is quality, could be produced by anyone.

So don't just put out quality videos... put out videos with YOUR own spin. That's the way to turn viewers into subscribers.