for videos in this stream, put the following in your uBlock Origin my filters, replacing diasp.eu with the domain of your diaspora address:

diasp.eu##div.title
diasp.eu##div.meta
diasp.eu##div.video-info
diasp.eu##div.video-overlay

It removes the button and title, so what remains is just the image, like a photo.
But it still works - clickable and all that.
#diaspora #firefox #ublock #video