I first noticed D-tube promoting itself as a block chain alternative to YouTube. It would have been better simply promoted as a block chain video hosting site. Naming YouTube as its alternative, is somehow suggestive of a like comparison, and this is where it fails. D-tube is not an alternative to YouTube, as it is in no way comparable to YouTube's sophisticated marketing, editing and connectivity platform. So, if you intend using D-tube, and there's no good reason why you shouldn't - don't expect an alternative YouTube site.
What you do get with D-tube, seems to me to be a little buggy just now, as well as lacking some basic features, although I'm prepared to accept it might be me as a new user.
The first thing I noticed after uploading a video, which was in itself quite painless, after entering all the necessary info, I was prompted to upload a snapshot. I waited a while to see which thumbnail it had decided on first before I did that, and there was non, so you have to upload a snapshot, or there is no thumbnail. Second thing I noticed, on pressing the publish button, was a big red error message in the corner of the screen saying "error, unable to connect to the block chain" or something similar to that, it flashed up once then disappeared and that was that, my video was published. I couldn't find an error history, or any block chain info, or indeed any notice that the transaction had taken place, so I really don't know what to think of that, or indeed if it has actually linked to the block chain. Its published and that's all I know. There is no video editor that I can find, and no undo process, unless I'm missing something, then perhaps someone else can educate me.
The most lacking feature as far as I can tell as of writing, is its inability to embed the video in the link to steemit, but instead places the thumbnail or chosen 'snapshot' on the blog, with a link back to D-tube. Bearing in mind that D-tube is powered by and linked to steemit, I think this is a bit shortsighted. If I embed the video URL itself, it doesn't allow the playing of the video locally, you have to visit the site. YouTube on the other hand can be embedded, it will also allow you to embed on all popular social media sites. I have to say, I'm not a big YouTube fan out of principle, but it does work, its very slick like it or not.
OK that's it really, this is just my personal experience so far. D-tube seems to be a good idea, the first I'm sure of many block chain related products, but I'm not sure its ready for market just yet. I'll update you if I have a better experience in the future.
D-tube is an excellent enterprise, and I wish it every success. I have an account there and I will use it and hopefully enjoy its development.