Great video Erik,
I've been dealing with these platforms quite a lot and all of them have their limitations and their advantages. What I like about 3speak is that you might get a fat upvote on your videos from 3speak. The negative part is that you can't set benficiaries and it sometimes takes very long to upload.
I don't use dtube much because it posts in dtube community and I don't really like to crosspost.
With Lbry the problem is that if you embed videos in peakd, they won't show in hive.blog. I've found a solution and that is to put an image into the post. I often put a kind of "play" logo on it and then I link the video to Lbry. This way it's visible on all platforms and you recognise it's a video. Another advantage is that every view can generate tips on Lbry...